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  • Adjust static value into dynamic (javascript) value possible in Sharepoint allitems.aspx page?

    - by lerac
    <SharePoint:SPDataSource runat="server" IncludeHidden="true" SelectCommand="&lt;View&gt;&lt;Query&gt;&lt;OrderBy&gt;&lt;FieldRef Name=&quot;EventDate&quot;/&gt;&lt;/OrderBy&gt;&lt;Where&gt;&lt;Contains&gt;&lt;FieldRef Name=&quot;lawyer_x0020_1&quot;/&gt;&lt;Value Type=&quot;Note&quot;&gt;F. Sanches&lt;/Value&gt;&lt;/Contains&gt;&lt;/Where&gt;&lt;/Query&gt;&lt;/View&gt;" id="datasource1" DataSourceMode="List" UseInternalName="true"><InsertParameters><asp:Parameter DefaultValue="{ANUMBER}" Name="ListID"></asp:Parameter> This codeline is just one line of the allitems.aspx of a sharepoint list item. It only displays items where lawyer 1 = F. Sanches. Before I start messing around with the .ASPX page I wonder if it possible to change F. Sanches (in the code) into a dynamical variable (from a javascript value or something else that can be used to place the javascript value in there dynamically). If I put any javascript code in the line it will not work. P.S. Ignore ANUMBER part in code. Let say to make it simple I have javascript variable like this (now static but with my other code it is dynamic). It would be an achievement if it would place a static javascript variable. <SCRIPT type=text/javascript>javaVAR = "P. Janssen";</script> If Yes -- how? If No -- Thank you!

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  • Is my slide-to-anchor jQuery routine a correct use of JavaScript, or is there a better way?

    - by Stuart Robson
    I'm currently working on a project with a one page design that'll slide up and down between sections on an <a href> link... Currently, i have it written as follows: <ul> <li><a href="javascript:void(0)" onClick="goToByScroll('top')">home</a></li> <li><a href="javascript:void(0)" onClick="goToByScroll('artistsmaterials')">artist's materials</a></li> <li><a href="javascript:void(0)" onClick="goToByScroll('pictureframing')">picture framing</a></li> <li><a href="javascript:void(0)" onClick="goToByScroll('gallery')">gallery</a></li> <li><a href="javascript:void(0)" onClick="goToByScroll('contactus')">contact us</a></li> </ul> ...with the most relevant portion being the links: <a href="javascript:void(0)" onClick="goToByScroll('contactus')"> Then in a .js file I have: function goToByScroll(id){ $('html,body').animate({scrollTop: $("#"+id).offset().top},'slow'); } Is this ok? Or should this be done a different way?

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  • Microsoft Templates included in jQuery 1.5!

    - by Stephen Walther
    When I joined the ASP.NET team as the Program Manager for Ajax, the ASP.NET team was working on releasing a new version of the Microsoft Ajax Library. This new version of the Microsoft Ajax Library had several really innovative and unique features such as support for client templates, client data-binding, script dependency management, and globalization. However, we kept hearing the message that our customers wanted to use jQuery when building ASP.NET applications. Therefore, about ten months ago, we decided to pursue a risky strategy. Scott Guthrie sent me to Cambridge to meet with John Resig – the creator of jQuery and leader of the jQuery project – to find out whether Microsoft and jQuery could work together. We wanted to find out whether the jQuery project would be open to allowing Microsoft to contribute the innovative features that we were developing for the Microsoft Ajax Library -- such as client templates and client data-binding -- to the jQuery library. Fortunately, the Cambridge meeting with Resig went well. John Resig was very open to accepting contributions to the jQuery library. Over the next few months, we worked out a process for Microsoft to contribute new features to the open-source jQuery project. Resig and Guthrie appeared on stage at the MIX10 conference to announce that Microsoft would be contributing features to jQuery. It has been a long journey, but I am happy to report success. Today, Microsoft and the jQuery project have announced that three plugins developed by developers on the ASP.NET team – the jQuery Templates, jQuery Data Link, and jQuery Globalization plugins – have been accepted as official jQuery plugins. In addition, the jQuery Templates plugin will be integrated into jQuery 1.5 which is the next major release of jQuery. You can learn more about the plugins by watching the following Web Camps TV episode hosted by James Senior with Stephen Walther: Web Camps TV #5 - Microsoft Commits Code to jQuery! You can read Scott Guthrie’s blog announcement here: http://weblogs.asp.net/scottgu/archive/2010/10/04/jquery-templates-data-link-and-globalization-accepted-as-official-jquery-plugins.aspx You can read the jQuery team’s announcement here: http://blog.jquery.com/2010/10/04/new-official-jquery-plugins-provide-templating-data-linking-and-globalization/ I wrote the original proposal for the jQuery Templates plugin. Dave Reed and Boris Moore were the ASP.NET developers responsible for actually writing the plugin (with lots of input from the jQuery team and the jQuery community). Boris has written a great set of tutorials on the Templates plugin. The first tutorial in his series is located here: http://www.borismoore.com/2010/09/introducing-jquery-templates-1-first.html I want to thank John Resig, Richard Worth, Scott Gonzalez, Rey Bango, Jorn Zaefferer, Karl Swedberg and all of the other members of the jQuery team for working with the ASP.NET team and accepting our contributions to the jQuery project.

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  • La bêta de Chrome 10 est disponible avec un nouveau moteur JavaScript et l'accélération GPU

    La bêta de Chrome 10 est disponible Avec un nouveau moteur JavaScript et l'accélération GPU Google vient de mettre à la disponible des utilisateurs la bêta de Chrome 10. Dans cette nouvelle version, Google améliore encore la vitesse d'exécution du code JavaScript avec l'introduction d'une nouvelle version de sa machine virtuelle JavaScript V8 CrankShaft. CrankShaft apporte une hausse de l'exécution du JavaScript de 66% sur le benchmark V8 par rapport à la version finale de Chrome 9. [IMG]https://lh4.googleusercontent.com/PAxHeU25m_QWU83fp_RAPnrtAaWN_m8XOplzXtMZQW7g5wwGEetXbSmje_y2uZBhZjuaNvJCf6kGPHPSehn0z80mi5h1srPdtpJxpP4wfkqr4uoHTnRoEx2EyPOsx4nw[/IMG]...

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  • Chrome Countdown Extension [migrated]

    - by Mike Saffold
    I have modified this countdown script to countdown to 4:20pm everyday. I have attempted to create a Google Chrome app that displays the countdown. The javascript is supposed replace a paragraph tag with id of "note" with the time left. It works when I load the page in chrome, but does not work when I load the extension. Example, if I put: <p id="note">asdf</a> I get just the text, "asdf", but when I open the html file I get the countdown. Here is the manifest.json file: { "name": "My First Extension", "version": "1.0", "manifest_version": 2, "description": "The first extension that I made.", "browser_action": { "default_icon": "icon.png", "default_popup": "popup.html" } } Here is the popup.html code: <html> <head> <title>4:20PM Countdown</title> <!-- Our CSS stylesheet file --> <link rel="stylesheet" href="http://fonts.googleapis.com/css?family=Open+Sans+Condensed:300" /> <link rel="stylesheet" href="http://treesmoke.com/cd/assets/css/styles.css" /> <link rel="stylesheet" href="http://treesmoke.com/cd/assets/countdown/jquery.countdown.css" /> </head> <body> <p id="note">asdf</p> <!-- JavaScript includes --> <script type="text/javascript" src="http://code.jquery.com/jquery-1.7.1.min.js"></script> <script type="text/javascript" src="http://treesmoke.com/cd/assets/countdown/jquery.countdown.js"></script> <script type="text/javascript" src="http://treesmoke.com/cd/assets/js/script.js"></script> </body> </html> Here's the popup.html page, showing that the script works. Thanks guys, it isn't that big of a deal if I can't get it to work. I was just bored and decided to learn a little.

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  • Help me please, javascript place problem or another thing??

    - by ilkdrl
    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Urunler.aspx.cs" Inherits="Urunler" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <meta http-equiv="content-language" content="en" /> <link href="rss/example_ticker.css" rel="stylesheet" type="text/css" /> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script> <script src="rss/jquery.zrssfeed.min.js" type="text/javascript"></script> <script src="rss/jquery.vticker.js" type="text/javascript"></script> <title></title> <script type="text/javascript" src="lightbox/js/prototype.js"></script> <script type="text/javascript" src="lightbox/js/scriptaculous.js?load=effects,builder"></script> <script type="text/javascript" src="lightbox/js/lightbox.js"></script> <link rel="stylesheet" href="lightbox/css/lightbox.css" type="text/css" media="screen" /> <style type="text/css"> ........... ........... ........... <td style="background-color: #808080"> <script type="text/javascript"> $(document).ready(function () { $('#ticker1').rssfeed('http://www.xxxxxxx.com/map.asp').ajaxStop(function () { $('#ticker1 div.rssBody').vTicker({ showItems: 3 }); }); }); </script> <div id="ticker1" > </div> Hi, i have two scripts.lightbox and rss. lightbox script works very well in mywebform1 but rss feed dont work.I didnot solve that?Help me please. PS: on the other hand, my another webpage(mywebform2) in same website has only rss feed and works very well.

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  • why does my C# client that uses Library A need to have a using statement for Library B (which A uses

    - by Greg
    Hi, I have: Main Program Class - uses Library A Library A - has partial classes which mix in methods from Library B Library B - mix in methods & interfaces So in Library B when I include a partial Node class which implements INode (defined in Library B) I suddenly get an error in my main class where it uses Node from Library A. The error tells me in the Main Class I have to have a using statement to Library B. Any ideas?

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  • HTML5 Form Validation

    - by Stephen.Walther
    The latest versions of Google Chrome (16+), Mozilla Firefox (8+), and Internet Explorer (10+) all support HTML5 client-side validation. It is time to take HTML5 validation seriously. The purpose of the blog post is to describe how you can take advantage of HTML5 client-side validation regardless of the type of application that you are building. You learn how to use the HTML5 validation attributes, how to perform custom validation using the JavaScript validation constraint API, and how to simulate HTML5 validation on older browsers by taking advantage of a jQuery plugin. Finally, we discuss the security issues related to using client-side validation. Using Client-Side Validation Attributes The HTML5 specification discusses several attributes which you can use with INPUT elements to perform client-side validation including the required, pattern, min, max, step, and maxlength attributes. For example, you use the required attribute to require a user to enter a value for an INPUT element. The following form demonstrates how you can make the firstName and lastName form fields required: <!DOCTYPE html> <html > <head> <title>Required Demo</title> </head> <body> <form> <label> First Name: <input required title="First Name is Required!" /> </label> <label> Last Name: <input required title="Last Name is Required!" /> </label> <button>Register</button> </form> </body> </html> If you attempt to submit this form without entering a value for firstName or lastName then you get the validation error message: Notice that the value of the title attribute is used to display the validation error message “First Name is Required!”. The title attribute does not work this way with the current version of Firefox. If you want to display a custom validation error message with Firefox then you need to include an x-moz-errormessage attribute like this: <input required title="First Name is Required!" x-moz-errormessage="First Name is Required!" /> The pattern attribute enables you to validate the value of an INPUT element against a regular expression. For example, the following form includes a social security number field which includes a pattern attribute: <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Pattern</title> </head> <body> <form> <label> Social Security Number: <input required pattern="^d{3}-d{2}-d{4}$" title="###-##-####" /> </label> <button>Register</button> </form> </body> </html> The regular expression in the form above requires the social security number to match the pattern ###-##-####: Notice that the input field includes both a pattern and a required validation attribute. If you don’t enter a value then the regular expression is never triggered. You need to include the required attribute to force a user to enter a value and cause the value to be validated against the regular expression. Custom Validation You can take advantage of the HTML5 constraint validation API to perform custom validation. You can perform any custom validation that you need. The only requirement is that you write a JavaScript function. For example, when booking a hotel room, you might want to validate that the Arrival Date is in the future instead of the past: <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Constraint Validation API</title> </head> <body> <form> <label> Arrival Date: <input id="arrivalDate" type="date" required /> </label> <button>Submit Reservation</button> </form> <script type="text/javascript"> var arrivalDate = document.getElementById("arrivalDate"); arrivalDate.addEventListener("input", function() { var value = new Date(arrivalDate.value); if (value < new Date()) { arrivalDate.setCustomValidity("Arrival date must be after now!"); } else { arrivalDate.setCustomValidity(""); } }); </script> </body> </html> The form above contains an input field named arrivalDate. Entering a value into the arrivalDate field triggers the input event. The JavaScript code adds an event listener for the input event and checks whether the date entered is greater than the current date. If validation fails then the validation error message “Arrival date must be after now!” is assigned to the arrivalDate input field by calling the setCustomValidity() method of the validation constraint API. Otherwise, the validation error message is cleared by calling setCustomValidity() with an empty string. HTML5 Validation and Older Browsers But what about older browsers? For example, what about Apple Safari and versions of Microsoft Internet Explorer older than Internet Explorer 10? What the world really needs is a jQuery plugin which provides backwards compatibility for the HTML5 validation attributes. If a browser supports the HTML5 validation attributes then the plugin would do nothing. Otherwise, the plugin would add support for the attributes. Unfortunately, as far as I know, this plugin does not exist. I have not been able to find any plugin which supports both the required and pattern attributes for older browsers, but does not get in the way of these attributes in the case of newer browsers. There are several jQuery plugins which provide partial support for the HTML5 validation attributes including: · jQuery Validation — http://docs.jquery.com/Plugins/Validation · html5Form — http://www.matiasmancini.com.ar/jquery-plugin-ajax-form-validation-html5.html · h5Validate — http://ericleads.com/h5validate/ The jQuery Validation plugin – the most popular JavaScript validation library – supports the HTML5 required attribute, but it does not support the HTML5 pattern attribute. Likewise, the html5Form plugin does not support the pattern attribute. The h5Validate plugin provides the best support for the HTML5 validation attributes. The following page illustrates how this plugin supports both the required and pattern attributes: <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>h5Validate</title> <style type="text/css"> .validationError { border: solid 2px red; } .validationValid { border: solid 2px green; } </style> </head> <body> <form id="customerForm"> <label> First Name: <input id="firstName" required /> </label> <label> Social Security Number: <input id="ssn" required pattern="^d{3}-d{2}-d{4}$" title="Expected pattern is ###-##-####" /> </label> <input type="submit" /> </form> <script type="text/javascript" src="Scripts/jquery-1.4.4.min.js"></script> <script type="text/javascript" src="Scripts/jquery.h5validate.js"></script> <script type="text/javascript"> // Enable h5Validate plugin $("#customerForm").h5Validate({ errorClass: "validationError", validClass: "validationValid" }); // Prevent form submission when errors $("#customerForm").submit(function (evt) { if ($("#customerForm").h5Validate("allValid") === false) { evt.preventDefault(); } }); </script> </body> </html> When an input field fails validation, the validationError CSS class is applied to the field and the field appears with a red border. When an input field passes validation, the validationValid CSS class is applied to the field and the field appears with a green border. From the perspective of HTML5 validation, the h5Validate plugin is the best of the plugins. It adds support for the required and pattern attributes to browsers which do not natively support these attributes such as IE9. However, this plugin does not include everything in my wish list for a perfect HTML5 validation plugin. Here’s my wish list for the perfect back compat HTML5 validation plugin: 1. The plugin would disable itself when used with a browser which natively supports HTML5 validation attributes. The plugin should not be too greedy – it should not handle validation when a browser could do the work itself. 2. The plugin should simulate the same user interface for displaying validation error messages as the user interface displayed by browsers which natively support HTML5 validation. Chrome, Firefox, and Internet Explorer all display validation errors in a popup. The perfect plugin would also display a popup. 3. Finally, the plugin would add support for the setCustomValidity() method and the other methods of the HTML5 validation constraint API. That way, you could implement custom validation in a standards compatible way and you would know that it worked across all browsers both old and new. Security It would be irresponsible of me to end this blog post without mentioning the issue of security. It is important to remember that any client-side validation — including HTML5 validation — can be bypassed. You should use client-side validation with the intention to create a better user experience. Client validation is great for providing a user with immediate feedback when the user is in the process of completing a form. However, client-side validation cannot prevent an evil hacker from submitting unexpected form data to your web server. You should always enforce your validation rules on the server. The only way to ensure that a required field has a value is to verify that the required field has a value on the server. The HTML5 required attribute does not guarantee anything. Summary The goal of this blog post was to describe the support for validation contained in the HTML5 standard. You learned how to use both the required and the pattern attributes in an HTML5 form. We also discussed how you can implement custom validation by taking advantage of the setCustomValidity() method. Finally, I discussed the available jQuery plugins for adding support for the HTM5 validation attributes to older browsers. Unfortunately, I am unaware of any jQuery plugin which provides a perfect solution to the problem of backwards compatibility.

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  • Google Analytics and Whos.amung.us in realtime visitors, why such an enormous discrepancy?

    - by jacouh
    Since years I use in a site both Google Analytics and Whos.amung.us, both Google analytics and whos.amung.us javascripts are inserted in the same pages in the tracked part of the site. In real-time visitors, why such an enormous discrepancy ? for example at the moment, Google analytics gives me 9 visitors, whos.amung.us indicates 59, a ratio of 6 times? Why whos.amung.us is 6 times optimistic than Google Analytics in terms of the realtime visitors? Google whos.amung.us My question is: whos.amung.us does not detect robots while Google does? GA ignores visitors from some countries, not whos.amung.us? Some robots/bots execute whos.amung.us javascript for tracking? While no robots/bots can execute the tracking javascript provided by Google Analytics? To facilitate your analysis, I copy JS code used below: Google analytics: <script type="text/javascript"> var _gaq = _gaq || []; _gaq.push(['_setAccount', 'MyGaAccountNo']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); </script> Whos.amung.us: <script>var _wau = _wau || []; _wau.push(["tab", "MyWAUAccountNo", "c6x", "right-upper"]);(function() { var s=document.createElement("script"); s.async=true; s.src="http://widgets.amung.us/tab.js";document.getElementsByTagName("head")[0].appendChild(s);})();</script> I've aleady signaled this to WAU staff some time ago, NR, I've not done this to Google as they don't handle this kind of feedback. Thank you for your explanations.

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  • Proper Use Of HTML Data Attributes

    - by VirtuosiMedia
    I'm writing several JavaScript plugins that are run automatically when the proper HTML markup is detected on the page. For example, when a tabs class is detected, the tabs plugin is loaded dynamically and it automatically applies the tab functionality. Any customization options for the JavaScript plugin are set via HTML5 data attributes, very similar to what Twitter's Bootstrap Framework does. The appeal to the above system is that, once you have it working, you don't have worry about manually instantiating plugins, you just write your HTML markup. This is especially nice if people who don't know JavaScript well (or at all) want to make use of your plugins, which is one of my goals. This setup has been working very well, but for some plugins, I'm finding that I need a more robust set of options. My choices seem to be having an element with many data-attributes or allowing for a single data-options attribute with a JSON options object as a value. Having a lot of attributes seems clunky and repetitive, but going the JSON route makes it slightly more complicated for novices and I'd like to avoid full-blown JavaScript in the attributes if I can. I'm not entirely sure which way is best. Is there a third option that I'm not considering? Are there any recommended best practices for this particular use case?

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  • Purpose of "new" keyword

    - by Channel72
    The new keyword in languages like Java, Javascript, and C# creates a new instance of a class. This syntax seems to have been inherited from C++, where new is used specifically to allocate a new instance of a class on the heap, and return a pointer to the new instance. In C++, this is not the only way to construct an object. You can also construct an object on the stack, without using new - and in fact, this way of constructing objects is much more common in C++. So, coming from a C++ background, the new keyword in languages like Java, Javascript, and C# seemed natural and obvious to me. Then I started to learn Python, which doesn't have the new keyword. In Python, an instance is constructed simply by calling the constructor, like: f = Foo() At first, this seemed a bit off to me, until it occurred to me that there's no reason for Python to have new, because everything is an object so there's no need to disambiguate between various constructor syntaxes. But then I thought - what's really the point of new in Java? Why should we say Object o = new Object();? Why not just Object o = Object();? In C++ there's definitely a need for new, since we need to distinguish between allocating on the heap and allocating on the stack, but in Java all objects are constructed on the heap, so why even have the new keyword? The same question could be asked for Javascript. In C#, which I'm much less familiar with, I think new may have some purpose in terms of distinguishing between object types and value types, but I'm not sure. Regardless, it seems to me that many languages which came after C++ simply "inherited" the new keyword - without really needing it. It's almost like a vestigial keyword. We don't seem to need it for any reason, and yet it's there. Question: Am I correct about this? Or is there some compelling reason that new needs to be in C++-inspired memory-managed languages like Java, Javascript and C#?

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  • Chrome "refusing to execute script"

    - by TestSubject528491
    In the head of my HTML page, I have: <script src="https://raw.github.com/cloudhead/less.js/master/dist/less-1.3.3.js"></script> When I load the page in my browser (Google Chrome v 27.0.1453.116) and enable the developer tools, it says Refused to execute script from 'https://raw.github.com/cloudhead/less.js/master/dist/less-1.3.3.js' because its MIME type ('text/plain') is not executable, and strict MIME type checking is enabled. Indeed, the script won't run. Why does Chrome think this is a plaintext file? It clearly has a js file extension. Since I'm using HTML5, I omitted the type attribute, so I thought that might be causing the problem. So I added type="text/javascript" to the <script> tag, and got the same result. I even tried type="application/javascript" and still, same error. Then I tried changing it to type="text/plain" just out of curiosity. The browser did not return an error, but of course the JavaScript did not run. Finally I thought the periods in the filename might be throwing the browser off. So in my HTML, I changed all the periods to the URL escape character %2E: <script src="https://raw.github.com/cloudhead/less%2Ejs/master/dist/less-1%2E3%2E3.js"></script> This still did not work. The only thing that truly works (i.e. the browser does not give an error and the JS successfully runs) is if I download the file, upload it to a local directory, and then change the src value to the local file. I'd rather not do this since I'm trying to save space on my own website. How do I get the Chrome to recognize that the linked file is actually a javascript type?

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  • Choosing a (browser) game environment [closed]

    - by Iain
    I apologise in advance if this post is something you've heard a million times already or seems like a trolling attempt. I just want some advice and I'm coming up short with my own Google searches. Basically, I would like to start learning some game development in my own free time (nothing serious, just purely as a hobbyist for fun). I'd like to know what the communities opinions are on the old HTML5/Javascript v Flash argument but purely from a game development perspective. I know people say Flash is dying because of issues like SEO, memory/bandwidth usage and Apple dropping it on tablet and mobile devices, so is it worth me dedicating my free time to learning to use Flash/AS3 for game development or should I focus on HTML5/Javascript? At the moment, I'm not sure HTML5/Javascript is mature enough or has the support tools that Flash does (framework, IDE, etc) and there seems to be a lot more resources online for beginner Flash/AS3 programming. When I'm reading tutorials online for Flash/AS3 I always have it in the back of my head that I'm wasting my time because it won't be around in a few years and I should be investing that time learning HTML5/Javascript. Thoughts? Disclaimer: I'm not trying to spark a flame war or troll anyone - I believe in the right tools for the job and I don't want to waste my time learning something that won't be around in a few years.

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  • Why do memory-managed languages retain the `new` keyword?

    - by Channel72
    The new keyword in languages like Java, Javascript, and C# creates a new instance of a class. This syntax seems to have been inherited from C++, where new is used specifically to allocate a new instance of a class on the heap, and return a pointer to the new instance. In C++, this is not the only way to construct an object. You can also construct an object on the stack, without using new - and in fact, this way of constructing objects is much more common in C++. So, coming from a C++ background, the new keyword in languages like Java, Javascript, and C# seemed natural and obvious to me. Then I started to learn Python, which doesn't have the new keyword. In Python, an instance is constructed simply by calling the constructor, like: f = Foo() At first, this seemed a bit off to me, until it occurred to me that there's no reason for Python to have new, because everything is an object so there's no need to disambiguate between various constructor syntaxes. But then I thought - what's really the point of new in Java? Why should we say Object o = new Object();? Why not just Object o = Object();? In C++ there's definitely a need for new, since we need to distinguish between allocating on the heap and allocating on the stack, but in Java all objects are constructed on the heap, so why even have the new keyword? The same question could be asked for Javascript. In C#, which I'm much less familiar with, I think new may have some purpose in terms of distinguishing between object types and value types, but I'm not sure. Regardless, it seems to me that many languages which came after C++ simply "inherited" the new keyword - without really needing it. It's almost like a vestigial keyword. We don't seem to need it for any reason, and yet it's there. Question: Am I correct about this? Or is there some compelling reason that new needs to be in C++-inspired memory-managed languages like Java, Javascript and C#?

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  • How can I making Twitter, Facebook and Reddit share buttons load last?

    - by Daniel Bingham
    I have a website with a number of pages that sport twitter, facebook and reddit share buttons. They take forever to load and until they do the rest of the page doesn't load. So how I can make them load last? Currently, they are loaded something like this: <div class="item"><a href="http://twitter.com/share" class="twitter-share-button" data-count="vertical" data-via="FridgeToFood" data-related="danielBingham:Recipe and update tweets from Fridge to Food.">Tweet</a><script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script></div> <div class="item"><script src="http://connect.facebook.net/en_US/all.js#xfbml=1"></script><fb:like layout="box_count" width="40"></fb:like></div> <div class="item"> <script type="text/javascript">reddit_target='recipes';</script> <script type="text/javascript" src="http://reddit.com/static/button/button2.js"></script> </div> They are in a div called "shareWrapper" and are loading to one side of the page. The buttons load where ever the script code is placed. As far as I know, I can't place the script code at the bottom of the page and move the resulting buttons after the fact. I want them to appear near the top, which right now means they are stopping everything below them from loading for several seconds. I tried loading them using javascript, but using JQuery's $(document).ready(), but that failed. It seems to leave the page in some sort of loading loop from which it never emerges. Are there other ways to get these to load last?

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  • Buffer System For Items

    - by Ohmages
    I am going to reference this image of what I want to accomplish in JavaScript. This is the Diablo buffer system. This question may be a bit advanced (or possibly not even allowed). But I was wondering how you might go about implementing this type of system in a JavaScript game. Currently to implement such a system in JavaScript escapes me, and I am turning to SO to get some suggestions, ideas, and hopefully some insight in how I could accomplish this without being to costly on the CPU. Some thoughts of mine for implementing such a system would be to: Create DIVS within a DIV that hold each position of the inventory Go through each item you own in a container and see which DIV it belongs to Make said item images the DIVs image This type of system might possibly work if ALL items were 1x1, but for this example its not going to work out. I am at a complete lost of ideas how to even accomplish this. Although, maybe rendering directly to the canvas and checking mouse cords could work, there would more than likely be A HUGE annoyance when checking if other items are overlapping each other (meaning you cant place the item down, and possibly switching item with the cursor item ). That said, what am I left with? Do I need to makeshift my own hack system with messy code, or is there some source out there (that I don't know about) that has replicated this type of system in their own game. I would be very grateful to get some replies on how you might go about doing this, and will accept answers that can logically explain how you might implement such a system (code is not required). P.S. Id like to use pure JavaScript, and nothing else (even though it might be "reinventing the wheel", I also like to learn).

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  • What are my choices for server side sandboxed scripting?

    - by alfa64
    I'm building a public website where users share data and scripts to run over some data. The scripts are run serverside in some sort of sandbox without other interaction this cycle: my Perl program reads from a database a User made script, adds the data to be processed into the script ( ie: a JSON document) then calls the interpreter, it returns the response( a JSON document or plain text), i save it to the database with my perl script. The script should be able to have some access to built in functions added to the scripting language by myself, but nothing more. So i've stumbled upon node.js as a javascript interpreter, and and hour or so ago with Google's V8(does v8 makes sense for this kind of thing?). CoffeeScript also came to my mind, since it looks nice and it's still Javascript. I think javascript is widespread enough and more "sandboxeable" since it doesn't have OS calls or anything remotely insecure ( i think ). by the way, i'm writing the system on Perl and Php for the front end. To improve the question: I'm choosing Javascript because i think is secure and simple enough to implement with node.js, but what other alternatives are for achieving this kind of task? Lua? Python? I just can't find information on how to run a sandboxed interpreter in a proper way.

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  • Is sending data to a server via a script tag an outdated paradigm?

    - by KingOfHypocrites
    I inherited some old javascript code for a website tracker that submits data to the server using a script url: var src = "http://domain.zzz/log/method?value1=x&value2=x" var e = document.createElement('script'); e.src = src; I guess the idea was that cross domain requests didn't haven't to be enabled perhaps. Also it was written back in 2005. I'm not sure how well XmlHttpRequests were supported at the time. Anyone could stick this on their website and send data to our server for logging and it ideally would work in most any browser with javascript. The main limitation is all the server can do is send back javascript code and each request has to wait for a response from the server (in the form of a generic acknowledgement javascript method call) to know it was received, then it sends the next. I can't find anyone doing this online or any metrics as to whether this faster or more secure than XmlHttpRequests. I don't know if this is just an old way of doing things or it's still the best way to send data to the server when you are mostly trying to send data one way and you need the best performance possible. So in summary is sending data via a script tag an outdated paradigm? Should I abandon in favor of using XmlHttpRequsts?

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  • Social Network ( Help) [on hold]

    - by brunocascio
    I am in a great "problem" so to speak , and I need opinions to decide. The problem is to create a social network without knowing the number of users who use it (but if thinking if they were sufficient ) . The question is which language and framework to use .... I do not mind having to learn new technologies and / or languages ??. I am among PHP ( Laravel - Symfony - other? ) Ruby ( Ruby on Rails 4? ) Javascript ( Ember , express, locomotive , other? ) Python ( Django ) Java ( Grails , Play, other?) I have experience in both PHP and frameworks. In Symfony developed part of it, but I got tired having to do a thousand configurations for all . I know very little about Ruby , but I saw very easy . I do not know are saying the performance. Javascript costs me to get used to their paradigm , and do not know if at all sure to cover everything with Javascript. Django and python ( very poor knowledge ) Java , experience in data structure and android , but not web . Regarding the / s databases: In my head I have to MongoDB and costs change of opinion by another database with respect to documentation and EASE performance . But .......... frameworks have no support at all clear . I also thought of mixing technologies for using a tecnlogía backend and the frontend other. As I read in the new social network Origo . They use Symfony for REST and javascript for the frontend . ( Backbone , Underscore and RequireJS ) What do you recommend me ?

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  • PHP & AJAX SEO - For users with javascript and non javascript

    - by RussellHarrower
    So I understand this may come across as a open question, but I need away to solve this issue. I can either make the site do ajax request that load the body content, or I can have links that re-loads the whole page. I need the site to be SEO compliant, and I would really like the header to not re-load when the content changes, the reason is that we have a media player that plays live audio. Is there away that if Google BOT or someone without ajax enabled it does the site like normal href but if ajax or javascript allowed do it the ajax way.

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  • Why Eclipse does not see .jar file of a library?

    - by Roman
    I have a java project in which I have "Referenced Libraries". In the "Referenced Libraries" I have a .jar file of a library that I use (I use only one external library). When I try to "Run - Run" the code I have a NullPointerException. From my previous experience I know that it it (very likely) because my code does not see the library. I just started to use Eclipse and it can be the I do not "connect" libraries in a correct way. Should I use some options or additional action to force Eclipse to see the .jar file of the library? ADDED: By the right click on the library I get a drop-down menu in which I see "Build Path". My be I need to do something there?

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  • How do I build (get/download) time.h library?

    - by coffeenet
    I am trying to build a project on Linux via Makefile. I keep getting cannot find <sys/time.h> error. I asked around, and I was told that my project doesn't have access to library folders. Therefore, I am trying to solve this problem by using the time library locally inside my project's folder. I am very new to Linux. So, please forgive my question if it sounds naive. I found this, but I don't know what files I need, and how to build the library. http://sourceware.org/git/?p=glibc.git;a=tree;f=time;h=c950c5d4dd90541e8f3c7e1649fcde4aead989bb;hb=master Where can I find the time.h library/package? How do I build the library?

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  • Jscript help? What is the main purpose of this Javascript?

    - by user577363
    Dear All, I don't know Javascript, can you please show me the main purpose of this Javascript? Many Thanks!! <script> var QunarUtil=new function(){var prefix='/scripts/';var suffix='';var host='';if(location.host.indexOf('src.')!=-1){prefix='/scripts/src/';host='http://hstatic.qunar.com';suffix='.js';}else if(location.host.indexOf('enc.')!=-1){prefix='/scripts/';host='http://hstatic.qunar.com';suffix='.js';}else if(location.host.substring(0,10)=='sdev-'){prefix=location.host.substring(5,location.host.indexOf('.'));prefix='/'+prefix.replace(/\-/ig,'/');host='http://hstatic.qunar.com';suffix='.js';}else if(location.host.indexOf("h.qunar.com")!=-1){host='http://hstatic.qunar.com';suffix='';} this.getScriptURL=function(name,isList){if(name.charAt(0)!='/') return this.getScript(prefix+name,isList);else return this.getScript(name,isList);} this.getScript=function(src,isList){return'<'+'script type="text/javascript" src="'+host+src+(isList?suffix:'.js')+'?'+__QUNARVER__+'"></'+'script>';} this.writeScript=function(name,isList){document.write(this.getScriptURL(name,isList));} this.writeScriptList=function(list){for(var i=0;i<list.length;i++) document.write(this.getScriptURL(list[i]));} var cssRoot='/styles/';this.writeCSS=function(cssList){for(var i=0;i<cssList.length;i++){document.write('<link rel="stylesheet" href="'+cssRoot+cssList[i]+'?'+__QUNARVER__+'">');}} this.writeStaticScript=function(src){document.write('<scr'+'ipt type="text/javascript" src="'+src+'"></'+'scr'+'ipt>');} this.writeStaticList=function(src){document.write('<scr'+'ipt type="text/javascript" src="'+src+suffix+'?'+__QUNARVER__+'"></'+'scr'+'ipt>');}} $include=function(){for(var i=0;i<arguments.length;i++){QunarUtil.writeScript(arguments[i],true);}} </script> Uncompressed version: <script> var QunarUtil = new function() { var prefix = '/scripts/'; var suffix = ''; var host = ''; if (location.host.indexOf('src.') != -1) { prefix = '/scripts/src/'; host = 'http://hstatic.qunar.com'; suffix = '.js'; } else if (location.host.indexOf('enc.') != -1) { prefix = '/scripts/'; host = 'http://hstatic.qunar.com'; suffix = '.js'; } else if (location.host.substring(0, 10) == 'sdev-') { prefix = location.host.substring(5, location.host.indexOf('.')); prefix = '/' + prefix.replace(/\-/ig, '/'); host = 'http://hstatic.qunar.com'; suffix = '.js'; } else if (location.host.indexOf("h.qunar.com") != -1) { host = 'http://hstatic.qunar.com'; suffix = ''; } this.getScriptURL = function(name, isList) { if (name.charAt(0) != '/') return this.getScript(prefix + name, isList); else return this.getScript(name, isList); } this.getScript = function(src, isList) { return '<' + 'script type="text/javascript" src="' + host + src + (isList ? suffix : '.js') + '?' + __QUNARVER__ + '"></' + 'script>'; } this.writeScript = function(name, isList) { document.write(this.getScriptURL(name, isList)); } this.writeScriptList = function(list) { for (var i = 0; i < list.length; i++) document.write(this.getScriptURL(list[i])); } var cssRoot = '/styles/'; this.writeCSS = function(cssList) { for (var i = 0; i < cssList.length; i++) { document.write('<link rel="stylesheet" href="' + cssRoot + cssList[i] + '?' + __QUNARVER__ + '">'); } } this.writeStaticScript = function(src) { document.write('<scr' + 'ipt type="text/javascript" src="' + src + '"></' + 'scr' + 'ipt>'); } this.writeStaticList = function(src) { document.write('<scr' + 'ipt type="text/javascript" src="' + src + suffix + '?' + __QUNARVER__ + '"></' + 'scr' + 'ipt>'); } } $include = function() { for (var i = 0; i < arguments.length; i++) { QunarUtil.writeScript(arguments[i], true); } } </script>

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  • Can't include Javascript variable in PHP mysql_query call? [on hold]

    - by user198895
    I want the PHP mysql_query call to retrieve user values based on the Agency drop-down value but I can't get this to work. Am I unable to include the Javascript variable agency.value in PHP? <script type="text/javascript"> var agency = document.getElementById("agency"); var user = document.getElementById("user"); agency.onchange = onchange; // change options when agency is changed function onchange() { <?php include 'dbConnect.php'; ?> <?php $q = mysql_query("select id as UserID, CONCAT(LastName, ', ' , FirstName) as UserName from users where Agency = " . ?>agency.value<?php . " order by UserName");?> option_html = "<option value=0 selected>- All Users -</option>"; <?php while ($row1 = mysql_fetch_array($q)) {?> if (agency.value == 0 || agency.value == '<?php echo $row1[AgencyID]; ?>') { option_html += "<option value=<?php echo $row1[UserID]; ?>><?php echo $row1[UserName]; ?></option>"; } <?php } ?> user.innerHTML = option_html; } </script>

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