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  • Do we still need backup code for people who have javascript disabled?

    - by SLC
    I hear about it a bit in tutorials that I watch, that certain things won't work if javascript is disabled. Occasionally I see workarounds. The question is, are these relevent? I can't imagine anyone not having a javascript enabled browser nowadays, except the most ancient of phones, and chances are your page won't render on them properly anyway. Do people still bother to write backup code for javascript being disabled?

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  • html open a url on new target and focus.

    - by richard
    I am trying to fix a web site. It opens a help page in a new window/tab via <a href="..." target="help"> (no other frame has this name) This works well the first time opening a new window/tab, for the help. But on subsequent clicks the window/tab is loaded but remains hidden. I tryed this: <script> function OpenAndFocusHelp() { win=window.open('help/1000CH00017.htm','help'); win.focus(); } </script> <a href="help.html" target="help" onclick="OpenAndFocusHelp()">Help</a> It did not work!

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  • Learning HTML5 & CSS3. Do I need javascript too?

    - by samfu_1
    I'm familiar with the way html & css work together. Recently I was previewing some html5 content demo'd by apple and saw they used a html5/css/javascript. I'm at the point where I need to know whether or not javascript is a must-learn; or if I can find similar workarounds with CSS3 & HTML5. Do I need to learn javascript?

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  • Stuck with A* implementation

    - by Syed
    I have implemented some A* code in C# using this JavaScript code. My C# implementation is the same as the above javascript code. But I'm unable to get it to work properly, e.g pathfinder blocks itself when the same number of walls are placed in front of it and some other scenarios as well like blocking it one way completely, I am assuming that code is standalone (not having other functionality included in other scripts). Can anyone tell me if the above code is missing any A star functionality?

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  • Common header file for C++ and JavaScipt

    - by paperjam
    I have an app that runs a C++ server backend and Javascript on the client. I would like to define certain strings once only, for both pieces of code. For example, I might have a CSS class "row-hover" - I want to define this class name in one place only in case I change it later. Is there an easy way to include, or read, some sort of common definitions file into both C++ and JavaScript? Ideally as a compile / preprocessing step but any neat approach good.

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  • Disqus integration in website.. what is wrong??

    - by Thieme Hennis
    hi, I try to embed a disqus forum in a website I created. I used the exact code and instructions they give on the installation instructions. I just don't get it. Not much on Google either. Is something wrong in the code? Should I change anything? <!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <link rel="shortcut icon" href="../favicon.ico"> <title>Little Louie | Hennis &amp; Blaisse Lovers Productions</title> <META NAME="keywords" CONTENT="some,tags"> <link href="../style2.css" rel="stylesheet" type="text/css"> </head> <body> <p><b>Some text</p> <p> <div id="disqus_thread"></div> <script type="text/javascript"> (function() { var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true; dsq.src = 'http://littelouie.disqus.com/embed.js'; (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq); })(); </script> <noscript>Please enable JavaScript to view the <a href="http://disqus.com/?ref_noscript=littelouie">comments powered by Disqus.</a></noscript> <a href="http://disqus.com" class="dsq-brlink">blog comments powered by <span class="logo-disqus">Disqus</span></a> </p> <p> <script type="text/javascript"> var disqus_shortname = 'littelouie'; (function () { var s = document.createElement('script'); s.async = true; s.src = 'http://disqus.com/forums/littelouie/count.js'; (document.getElementsByTagName('HEAD')[0] || document.getElementsByTagName('BODY')[0]).appendChild(s); }()); </script> </p> </body> </html>

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  • Web Development Goes Pre-Visual InterDev

    - by Ken Cox [MVP]
    As a longtime and hardcore ASP.NET webforms developer, I’m finding the new client-side development world a bit of a grind.  I love learning new technologies, but I can’t help feeling we’ve regressed and lost our old RAD advantage as we move heavy lifting to the client. For my latest project, I’m using Telerik’s KendoUI in Visual Studio 2012. To say I feel clumsy writing this much JavaScript is an understatement. It seems like the only safe way to ‘write’ this code is by copying a working snippet from someone else and pasting it into my HTML page.  For me, JavaScript has largely been for small UI tasks like client-side validation and a bit of AJAX – and often emitted by a server-side control. I find myself today lost in nests of curly braces that Ctrl+K, Ctrl+D doesn’t seem to understand that well either. IntelliSense, my old syntax saviour, doesn’t seem to have kept up with this cobweb of code either. Code completion? Not seeing it. As I fumbled about this evening, I thought about how web development rocketed forward when Microsoft introduced Visual InterDev. Its Design-Time Controls (DTCs) changed the way we created sites. All the iterations of Visual Studio have enhanced that server-side experience where you let a tool write the bulk of the code and manually finesse it from there. What happened? Why am I typing  properties and values (especially default values!) into VS 2012 to get a client-side grid on a page? Where are the drag and drop objects that traditionally provided 70 percent of the mark-up and configuration?  Did we forget how to write Property Pages where you enter a value and the correct syntax appears magically in the source code? To me, the tooling was looking the other way as the scene shifted from server-side code to nimble client-side script. It’ll have to catch up. Although JavaScript is the lingua franca of web browsers, the language is unwieldy, tough to maintain, and messy to debug. If a .NET JIT compiler can turn our VB, F#, and C# source code into an Intermediate Language that executes on a computer, I don’t see why there can’t be a client-side compiler that turns a .NET language into JavaScript that browsers can consume.

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  • Automated Website Testing/Sanity/Quality

    - by Jeff
    I am thinking about building a tool that starts from the root of a webpage and traverses the entire website gathering a list of resources such as CSS/HTML/Javascript files and then runs CSS/Javascript Lint + HTML Validator + Broken Link Finder. Before I start building something like this, I was wondering if this exists already? Thanks. I already searched Google quite a bit and couldn't find much.

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  • Self-Executing Anonymous Function vs Prototype

    - by Robotsushi
    In Javascript there are a few clearly prominent techniques for create and manage classes/namespaces in javascript. I am curious what situations warrant using one technique vs. the other. I want to pick one and stick with it moving forward. I write enterprise code that is maintained and shared across multiple teams, and I want to know what is the best practice when writing maintainable javascript ? I tend to prefer Self-Executing Anonymous Functions however I am curious what the community vote is on these techniques. Prototype : function obj() { } obj.prototype.test = function() { alert('Hello?'); }; var obj2 = new obj(); obj2.test(); Self-Closing Anonymous Function : //Self-Executing Anonymous Function (function( skillet, $, undefined ) { //Private Property var isHot = true; //Public Property skillet.ingredient = "Bacon Strips"; //Public Method skillet.fry = function() { var oliveOil; addItem( "\t\n Butter \n\t" ); addItem( oliveOil ); console.log( "Frying " + skillet.ingredient ); }; //Private Method function addItem( item ) { if ( item !== undefined ) { console.log( "Adding " + $.trim(item) ); } } }( window.skillet = window.skillet || {}, jQuery )); //Public Properties console.log( skillet.ingredient ); //Bacon Strips //Public Methods skillet.fry(); //Adding Butter & Fraying Bacon Strips //Adding a Public Property skillet.quantity = "12"; console.log( skillet.quantity ); //12 //Adding New Functionality to the Skillet (function( skillet, $, undefined ) { //Private Property var amountOfGrease = "1 Cup"; //Public Method skillet.toString = function() { console.log( skillet.quantity + " " + skillet.ingredient + " & " + amountOfGrease + " of Grease" ); console.log( isHot ? "Hot" : "Cold" ); }; }( window.skillet = window.skillet || {}, jQuery )); //end of skillet definition try { //12 Bacon Strips & 1 Cup of Grease skillet.toString(); //Throws Exception } catch( e ) { console.log( e.message ); //isHot is not defined } I feel that I should mention that the Self-Executing Anonymous Function is the pattern used by the jQuery team. Update When I asked this question I didn't truly see the importance of what I was trying to understand. The real issue at hand is whether or not to use new to create instances of your objects or to use patterns which do not require constructors of the use of the new keyword. I added my own answer, because in my opinion we should make use of patterns which don't use the new keyword. For more information please see my answer.

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  • Monitoring GWT Website

    - by Raf
    We currently monitor our webapps using curl. More and more of our webapps use the GWT framework, which uses tons of javascript, and we can't rely on our curl system to monitor anymore. Therefore, we search the right tool to monitor, but it seems difficult to find a crawler which is light (no Selenium please) but handles javascript correctly. PS : we host our webapps as well as the probes, we don't want any Internet monitoring service.

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  • Create simple jQuery plugin

    - by ybbest
    In the last post, I have shown you how to add the function to jQuery. In this post, I will show you how to create plugin to achieve this. 1. You need to wrap your code in the following construct, this is because you should not use $ directly as $ is global variable, it could have clash with some other library which also use $.Basically, you can pass in jQuery object into the function, so that $ is made available inside the function. (JavaScript use function to create scope, so you can make sure $ is referred to jQuery inside the function ) (function($){ //Your code goes here. }; })(jQuery); 2. Put your code into the construct above. (function ($) { $.getParameterByName = function (name) { name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]"); var regexS = "[\\?&]" + name + "=([^&#]*)"; var regex = new RegExp(regexS); var results = regex.exec(window.location.search); if (results == null) return ""; else return decodeURIComponent(results[1].replace(/\+/g, " ")); }; })(jQuery); 3. Now you can reference the code into you project and you can call the method in you JavaScript References: Provides scope for variables Variables are scoped at the function level in javascript. This is different to what you might be used to in a language like C# or Java where the variables are scoped to the block. What this means is if you declare a variable inside a loop or an if statement, it will be available to the entire function. If you ever find yourself needing to explicitly scope a variable inside a function you can use an anonymous function to do this. You can actually create an anonymous function and then execute it straight away and all the variables inside will be scoped to the anonymous function: (function() { var myProperty = "hello world"; alert(myProperty); })(); alert(typeof(myProperty)); // undefined How does an anonymous function in JavaScript work? Building Your First jQuery Plugin A Plugin Development Pattern

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  • VLC without border/window decoration in Windows

    - by timberwo7ves
    I'm trying to run VLC (2.1, 64 bit) without any chrome on Windows 7. You can achieve it by going to Preferences, and in the Interface tab, unchecking Integrate video in interface, and also in the Video tab, unchecking Window decorations. The problem lies in the fact that without Window decorations there is no apparent way to move or resize the video window - in GOM player, for example, you can move window by dragging on the video itself; is there an option for this in VLC? Ideally, I would like to move the window by the method described above (by dragging the video), and would like the Window decorations to reappear on mouseover, to allow resizing; I'm a new VLC user, but unsure how far the customisation goes. - I'd settle with just the moving of the window via dragging the video if this is possible by advanced setting. There is a similar question here, but not exactly, and no solution to that particular question.

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  • Opera: closed window w/many tabs, window still open w/one tab, how to retrieve the many tabs

    - by Abel
    This is a little recipe for a little disaster: accidentally close a window with many important tabs open, only to find out that another window is still active with one tab open. Closing it will overwrite the saved tabs of the other window, which I want to recover. I need to recover the window with "many tabs" if possible,I didn't yet close the window with the one tab open, hopefully that prevents overwriting the saved settings. How do I retrieve, now that Opera is still active, the tabs of the closed window? I.e., where would Opera normally store these tabs when it closes a window? Can I prevent it from overwriting the saved state of "many tabs" with the current "one tab"?

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  • Trying to unpack 2.5GB .tar.gz file on Linux but getting "An error occurred while trying to open the archive"

    - by TMM
    Hi, Is there a limit on Linux for the file size of a .tar.gz (or its contents). I am currently creating a .tar.gz (both through the UI/"Compress As" and also through the command line) file for 2 files (6GB and 2GB), and even though it is created successfully, when I try to unpack it using Ark it throws the error "An error occurred while trying to open the archive". I have seen some places that it might be better to archive the file into several smaller .tar.gz files, but I was wondering exactly how to do this (and subsequently unpack the files). Also, is it totally impossible to use the 1 .tar.gz file approach as this would be much simpler. Thanks in advance, Tim

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  • Can I get some help on a javascript project?

    - by HenryOrrin
    I'm learning javascript and I thought it would be fun to build a "simple" calculator. I spent a few hours coding, and implementing the functions, but it only works partially. Can one of you look at my code and try and figure out what's wrong? The Calculator.zip Here's some explanation of the issues: the add(), subtract(), multiply(), and divide() methods work partially, not at all, or don't do as they're supposed to.. sometimes the 0 wont clear when the replaceDisplay() method evaluates the screen. If it helps, I'm also using jquery, so keep that in mind. Thank you!

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  • Save a binary file in SQL Server as BLOB and text (or get the text from Full-Text index)

    - by Glennular
    Currently we are saving files (PDF, DOC) into the database as BLOB fields. I would like to be able to retrieve the raw text of the file to be able to manipulate it for hit-highlighting and other functions. Does anyone know of a simple way to either parse out the files and save the raw text on save, either via SQL or .net code. I have found that Adobe has a filtdump utility that will convert the PDF to text. Filtdump seems to be a command line tool, and i don't see a way to use a file stream. And what would the extractor be for Office documents and other file types? -or- Is there a way to pull out the raw text from the Full text index? Note i am trying to build a .net & MSSql solution without having to use a third party tool such as Lucene

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  • Is 'second' a keyword in mysql full-text searches?

    - by Larry
    I have a simple MySQL table that is setup for full text search. | id | title | ---------------------- | 1 | test event | | 2 | Second test | | 3 | Larry's event | | 4 | this second | When I use the query: SELECT * FROM EVENTS WHERE MATCH (title) AGAINST ('test event' IN BOOLEAN MODE); I get back 3 rows; the ones containing 'test event', 'Second test', and 'Larry's Event'. Now If I run the following query: SELECT * FROM EVENTS WHERE MATCH (title) AGAINST ('second' IN BOOLEAN MODE); Nothing is returned... strange? Lastly, if I run the query: SELECT * FROM EVENTS WHERE MATCH (title) AGAINST ('second test' IN BOOLEAN MODE); I get back 2 rows; the ones containing 'test event' and 'Second test'. I appears that the word 'second' cannot be searched or needs to be escaped somehow. Am I missing something?

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  • Is there any way to limit the size of an STL Map?

    - by Nathan Fellman
    I want to implement some sort of lookup table in C++ that will act as a cache. It is meant to emulate a piece of hardware I'm simulating. The keys are non-integer, so I'm guessing a hash is in order. I have no intention of inventing the wheel so I intend to use stl::map for this (though suggestions for alternatives are welcome). The question is, is there any way to limit the size of the hash to emulate the fact that my hardware is of finite size? I'd expect the hash's insert method to return an error message or throw an exception if the limit is reached. If there is no such way, I'll simply check its size before trying to insert, but that seems like an inelegant way to do it.

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  • How can I get a file's upload size using simple Javascript?

    - by Pankaj Khurana
    I have upload file functionality on one of the page. I check for the extension of the file using JavaScript. Now i want to restrict the user from uploading file greater than 1 MB. Is there any way i can check the file upload size using JavaScript. My code currently look like this: <script language="JavaScript"> function validate() { var filename = document.getElementById("txtChooseFile").value; var ext = getExt(filename); if(ext == "txt" || ext == "csv") return true; alert("Please upload Text files only."); return false; } function getExt(filename) { var dot_pos = filename.lastIndexOf("."); if(dot_pos == -1) return ""; return filename.substr(dot_pos+1).toLowerCase(); } </script>

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  • How can I wait for the image to load in my new window before printing via child.print()?

    - by libertas
    $("#print").on('click', function () { var child = window.open("image.jpg", "_blank", "location=0,toolbar=0,scrollbars=1,fullscreen=1,menubar=0"); //any way to know/wait for image to load? child.print(); }); Any way for my parent window to know that the child window has completed loading the image prior to calling .print()? If they were trigger happy they would end up printing a blank page. I've tried both: child.attachEvent("onload", function () { child.print(); }); and child.attachEvent("DOMContentLoaded", function () { child.print(); }); //(found this online, apparently it's Firefox only, still didn't work)

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  • Efficiency: what block size of kernel-mode memory allocations?

    - by Robert
    I need a big, driver-internal memory buffer with several tens of megabytes (non-paged, since accessed at dispatcher level). Since I think that allocating chunks of non-continuous memory will more likely succeed than allocating one single continuous memory block (especially when memory becomes fragmented) I want to implement that memory buffer as a linked list of memory blocks. What size should the blocks have to efficiently load the memory pages? (read: not to waste any page space) A multiple of 4096? (equally to the page size of the OS) A multiple of 4000? (not to waste another page for OS-internal memory allocation information) Another size? Target platform is Windows NT = 5.1 (XP and above) Target architectures are x86 and amd64 (not Itanium)

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  • How to make a swing app aware of screen size change?

    - by Marton Sigmond
    Hi, while my swing app is running I change the size of the screen (e.g. from 1024x768 to 800x600). Is there any event I can listen to to be notified about this? Alternatively I could check the screen size in every couple of second, but the Toolkit.getScreenSize() keeps telling me the old value. How could I get the real screen size after the change? Environment: Linux (tested on SuSE ES 11 and Ubuntu 9.04) I appreciate your help. Marton

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  • Is it possible to align an element with the bottom of the window, yet make it scrollable, with CSS o

    - by last-child
    I have a design going on where I want to align the bottom of an intro paragraph with the bottom of the window, yet make it scroll with the rest of the page. So when the page opens, the visitor sees only the first paragraph (and a full screen background image, which is what I want to focus their attention on), but as they scroll they see the paragraph and the rest of the text. The height of the intro element can vary. Right now I think I have to introduce some javascript to do this - meassure the height of the window, the height of the paragraph, and adjust top: or margin-top of the paragraph to the difference between the two values. If there is a way to make a div have a height that corresponds exactly to the window height, and position the paragraph absolutely inside of this div, the let the rest of the text sit outside of the div, it could work... but I can't seem to make that happen with css. Any suggestions?

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  • What is the correct way to set size of elements of GUI?

    - by Roman
    I am using swing to create my GUI. J have a JFrame containing one main JPanel which, in its turn contain several JPanels which, in their turn, contain buttons. I would like to set certain sizes to mu buttons and JPanels. How does it work? Should I set sizes of my buttons and then the size of the JPanel and the JFrame will be set according to the buttons sizes? Or it works in the opposite direction? I set size for the JPanel and the size of the buttons will be set automatically?

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