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• Node.js running under IIS Express Keeps Crashing

  - by PazoozaTest Pazman

  I recently resinstalled Windows 7 on my machine and went back to downloading and installing the tools to help me continue developing node.js windows azure web applications. I followed the instructions given on the node.js azure site: http://www.windowsazure.com/en-us/develop/nodejs/ and using web installer 4.0 it says I have successfully installed these tools: Windows Azure Powershell Windows Azure SDK for Node.js - June 2012 Windows Azure SDK for .Net (VS 2012 RC) - June 2012 IIS Recommend Configuration The problem I am experiencing is that when I run the site using powershell e.g: start-azureemulator -launch it goes ahead and runs IIS Express, and after several minutes IIS Express crashes with the following information: Problem signature: Problem Event Name: APPCRASH Application Name: iisexpress.exe Application Version: 8.0.8298.0 Application Timestamp: 4f620349 Fault Module Name: iiscore.dll Fault Module Version: 8.0.8298.0 Fault Module Timestamp: 4f63b65c Exception Code: c0000005 Exception Offset: 00021767 OS Version: 6.1.7601.2.1.0.256.28 Locale ID: 1033 Additional Information 1: f66d Additional Information 2: f66d807b515d6b2dc6f28f66db769a01 Additional Information 3: 7b2f Additional Information 4: 7b2f6797d07ebc2c23f2b227e779722e I am running 2 instances each time, and both of them crash one after the other. Is anyone experiencing something similar and fix this issue ? Is their an upgrade I need to do ? I've run windows update but it says I've got all the latest updates etc. Can I tell the powershell cmdlet to use IIS 7 instead of IIS Express? I'm guessing its something to do with IIS Express on my machine. I did some hunting around and found this person here who experienced a similar problem: https://github.com/tjanczuk/iisnode/issues/149 I've got a cron job running every 1 second, to check if any website totals need to be updated. Could this be causing IIS Express to crash? Cheers

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• Three.js: texture to datatexture

  - by Alessandro Pezzato

  I'm trying to implement a delayed webcam viewer in javascript, using Three.js for WebGL capabilities. I need to store frames grabbed from webcam, so they can be shown after some time (some milliseconds to some seconds). I'm able to do this without Three.js, using canvas and getImageData(). You can find an example on jsfidle. I'm trying to find a way to do this without canvas, but using Three.js Texture or DataTexture object. Here an example of what I'm trying. The problem is that I cannot find how to copy the image from a Texture (image is of type HTMLVideoElement) to another. In rotateFrames() function the older frame should be lost and newer should replace, like in a FIFO. But the line frames[i].image = frames[i + 1].image; is just copying the reference, not the texture data. I guess DataTexture should do this, but I'm not able to get a DataTexture out of a Texture or HTMLVideoElement. Any idea?

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• pass object from JS to PHP and back

  - by Radu

  This is something that I don't think can't be done, or can't be done easy. Think of this, You have an button inside a div in HTML, when you click it, you call a php function via AJAX, I would like to send the element that start the click event(or any element as a parameter) to PHP and BACK to JS again, in a way like serialize() in PHP, to be able to restore the element in JS. Let me give you a simple example: PHP: function ajaxCall(element){ return element; } JS: callbackFunction(el){ el.color='red'; } HTML: <div id="id_div"> <input type="button" value="click Me" onClick="ajaxCall(this, callbackFunction);" /> </div> So I thing at 3 methods method 1. I can give each element in the page an ID. so the call to Ajax would look like this: ajaxCall(this.id, callbackFunction); and the callback function would be: document.getElementById(el).color='red'; This method I think is hard, beacause in a big page is hard to keep track of all ID's. method 2. I think that using xPath could be done, If i can get the exact path of an element, and in the callback function evaluate that path to reach the element. This method needs some googling, it is just an ideea. method 3. Modify my AJAX functions, so it retain the element that started the event, and pass it to the callback function as argument when something returns from PHP, so in my AJAX would look like this: eval(callbackFunction(argumentsFromPhp, element)); and the callback function would be: callbackFunction(someArgsFromPhp, el){ el.color='red'; // parse someArgsFromPhp } I think that the third option is my choise to start this experiment. Any of you has a better idea how I can accomplish this ? Thank you.

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• node.js beginner tutorials?

  - by TreyK

  Hey all, I'm working on creating my first real node.js http server, and I'm sort of drowning in it. As a good teacher of mine always said, "I'll just shove you in the water for now, and then I'll show you how to swim." Fortunately, she wasn't a swimming instructor, but it's a good analogy nonetheless. I feel like I've jumped into node.js and I've only found a ping pong ball to help, that is to say, most of the tutorials I've read stop shortly after the "Hello World" example and I've mostly been trying to make sense of copied and pasted code (or they assume I have knowledge of lower level HTTP and webserver concepts that have been done for me as an Apache/PHP developer). I have experience in both client-side Javascript and PHP, but node seems to be a beast all of its own. I don't quite have the low-level knowledge that seems necessary for creating a node server, and connect, which seems to be a nice module for simplifying things, seems quite sparsely explained, even in the docs on its Git. Where could I find some tutorials to help me in this situation? TL;DR - Are there any tutorials for node.js that go beyond "Hello World" but don't require much low-level knowledge? Or any tutorials that explain lower-level HTTP and webserver concepts that I would need to effectively create a node HTTP server? Thanks for any help. -Trey

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• Including a minified js code in another js library

  - by Nir

  I want to incorporate a minified javascript library (for example http://sizzlejs.com/) into my own non minified javascript library. The reason is that my library plugs into other websites and I don't want to ask them to include the extra library (sizzle) as well. Is there a way to include a minified library in a non minified library and have them both in one js file?

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• Cat all files in a directory, with a specific file at the beginning an end...?

  - by Aeisor

  Is there a way to cat all files in a given directory, but with a particular file at the beginning and end? For example, say I have: file1.js, file2.js, file3.js, file4.js, file5.js -- Effectively I would like to cat file2.js file*.js file3.js > /var/www/output.js I've tried a few variations of these find ! -name "file2.js" ! -name "file3.js" -type f -exec cat file2.js {} file3.js > /var/www/js/output.js \; find ! -name "file2.js" ! -name "file3.js" -type f | xargs -I files cat file2.js files file3.js > /var/www/output.js but the best I can get out of it is file2.js added before and file3.js added after all other files (multiple times) I know I could specify the files in the order I wanted manually, but this is not maintainable (I'm expecting, potentially 100 files). I have looked through man cat, as well as a handful of websites devoted to xargs, find and cat to no avail. Thanks in advance.

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• D3.js: "NS_ERROR_DOM_BAD_URI: Access to restricted URI denied"

  - by user2102328

  I have an html-file with several d3-graphs directly written in script tags into it. When I outsource one of the graphs into an external js file I get this message "NS_ERROR_DOM_BAD_URI: Access to restricted URI denied". If I delete the code with d3.json where it reads a local json file the error disappears. But it has to be possible to load a json file in an external js which is embedded into an html, right? d3.json("forcetree.json", function(json) { root = json; update(); });

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• Using a C#.net DLL in Node.js / serverside javascript

  - by Dve

  I have spent a while playing with node.js and exploring related frameworks such as express and geddy... and I am very impressed, especially with the WebSockets implementation in socket.io. I have a pet project that is an online game, the entire game engine is written in C# and I would like to know if there is anyway I can call the functions of this existing dll from a solution built using node.js, socket.io, express etc? The game engine itself is pretty complete; tested and robust. I am hoping there is some neat way of exposing its functionality without to much overhead. Thanks

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• Can I use jQuery with node.js?

  - by John

  Is it possible to use jQuery selectors/dom manipulation server-side using node.js?

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• What is node.js?

  - by Jeffrey

  I don't fully get what node.js is all about. Maybe it's because I am mainly a web based business app developer. Can someone please explain what it is and the use of it? Thanks. My understanding so far is that: The programming model is event driven, especially the way it handles IO. It uses javascript and the parser is V8. It can be easily used to create concurrent server apps. Are my understandings correct? If yes, then what are the benefits of evented IO, is it just more for the concurrency stuffs? Also is the direction of node.js to become a framework like, javascript based (v8 based) programming model?

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• Is it possible to use JavaScript inside handlebars.js template

  - by Gleeb

  The description says it all. How to put a JavaScript script inside handlebars template. I want to make a dynamic Paypal button for my website. <script type="text/x-mustache-template" id="product-item-thumbnail-template"> <h2>{{title}}</h2> <p>{{message}}</p> <p><a class="btn" href="#">View details &raquo;</a></p> <p><script src="resources/js-frameworks/[email protected]" data-button="buynow" data-name="My product" data-amount="1.00"></script></p> </script> But this produces an error because of the tag. it closes the template script and not the paypal script Thanks

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• POST request and Node.js without Nerve

  - by intellidiot

  Is there any way to accept POST type requests without using Nerve lib in Node.js?

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• Node.js and wss://

  - by CNelson

  I'm looking to start using javascript on the server, most likely with node.js, as well as use websockets to communicate with clients. However, there doesn't seem to be a lot of information about encrypted websocket communication using TLS and the wss:// handler. In fact the only server that I've seen explicitly support wss:// is Kaazing. This TODO is the only reference I've been able to find in the various node implementations. Am I missing something or are the websocket js servers not ready for encrypted communication yet? Another option could be using something like lighttpd or apache to proxy to a node listener, has anyone had success there?

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• Load Globalize cultures with Node.js?

  - by Xeon06

  I'm using jQuery Globalize with Node.js. They have a package.json file so I can simply use it as a module and require it. However, it doesn't load all cultures by default. I was wondering what the proper way to load a culture would be? I could go and do something like require('./node_modules/globalize/lib/cultures/globalize.culture.es-US.js') and load the file directly, but that doesn't seem too elegant. Is there a "proper" way to do this?

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• Syncing JS+PHP time

  - by meder

  Since the Date constructor is based on your PC's timezone and server-side is obviously dependent on the server's time settings... What procedures can I do to ensure that the timestamps I generate are consistent on both ends? I have a jQuery datepicker setup and I do a lot of work, I also have my own datepicker that's generated from server-side code which looks up db availability for bookings. I'm saving arrival/departure times on the server-side and the days are off by one because the JS is local timezone ( mine is Eastern ) . Is my only option doing something like making the JS call PHP to grab a timestamp?

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• Build divs JS functions included in JS or jQuery from ajax & php data

  - by dstonek

  If a user checks a form checkbox I want to create a new div. Dynamic data is loaded from ajax and php. I am asking how to create it with JS or jQuery. A simplified version will look something like <div id="ajaxSRC1" class="CLASS"> <a href="javascript:void(0)" onmouseover="return myFunction('ajaxSRC5', 'ajaxSRC6')"> <img src="ajaxSRC2" width="ajaxSRC3" height="ajaxSRC4" alt="..." /> </a> </div>

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• Jquery loaded? Colorbox is available? Calling some js file via $.getScript are always downloading fr

  - by uzay95

  I am dynamically load js files with _tumIsler.js (_allStuff.js) <script src="../js/_tumJsler.js" type="text/javascript"></script> It contains: // url=> http: + // + localhost:4399 + /yabant/ // ---- ---- -------------- -------- // protocol + "//" + host + '/virtualDirectory/' var baseUrl = document.location.protocol + "//" + document.location.host + '/yabant/'; // If there is "~/" at the begining of url, replace it with baseUrl function ResolveUrl(url) { if (url.indexOf("~/") == 0) { url = baseUrl + url.substring(2); } return url; } // Attaching scripts to any tag function addJavascript(jsname, pos) { var th = document.getElementsByTagName(pos)[0]; var s = document.createElement('script'); s.setAttribute('type', 'text/javascript'); s.setAttribute('src', jsname); th.appendChild(s); } // I want to make sure jQuery is loaded? addJavascript(ResolveUrl('~/js/1_jquery-1.4.2.min.js'), 'head'); var loaded = false; // assume it didn't first and if it is change it to true function fControl() { // alert("JQUERY is loaded?"); if (typeof jQuery == 'undefined') { loaded = false; fTry2LoadJquery(); } else { loaded = true; fGetOtherScripts(); } } // Check is jQuery loaded fControl(); function fTry2LoadJquery() { // alert("JQUERY didn't load! Trying to reload..."); if (loaded == false) { setTimeout("fControl()", 1000); } else { return; } } function getJavascript(jsname, pos) { // I want to retrieve every script one by one $.ajaxSetup({ async: false, beforeSend: function() { $.ajaxSetup({ async: false, cache: true }); }, complete: function() { $.ajaxSetup({ async: false, cache: true }); }, success: function() { // } }); $.getScript(ResolveUrl(jsname), function() { /* ok! */ }); } function fGetOtherScripts() { // alert("Other js files will be load in this function"); getJavascript(ResolveUrl('~/js/5_json_parse.js'), 'head'); getJavascript(ResolveUrl('~/js/3_jquery.colorbox-min.js'), 'head'); getJavascript(ResolveUrl('~/js/4_AjaxErrorHandling.js'), 'head'); getJavascript(ResolveUrl('~/js/6_jsSiniflar.js'), 'head'); getJavascript(ResolveUrl('~/js/yabanYeni.js'), 'head'); getJavascript(ResolveUrl('~/js/7_ResimBul.js'), 'head'); getJavascript(ResolveUrl('~/js/8_HaberEkle.js'), 'head'); getJavascript(ResolveUrl('~/js/9_etiketIslemleri.js'), 'head'); getJavascript(ResolveUrl('~/js/bugun.js'), 'head'); getJavascript(ResolveUrl('~/js/yaban.js'), 'head'); getJavascript(ResolveUrl('~/embed/bitgravity/functions.js'), 'head'); } After all these js files are loaded, this line is executing to show UploadFile page inside the page when clicked to the button which id is "btnResimYukle" . <script type="text/javascript"> if (jQuery().colorbox) { alert("colorbox exists"); } else { alert("colorbox doesn't exist"); $.ajaxSetup({ cache: true, async: false }); $.getScript(ResolveUrl('~/js/3_jquery.colorbox-min.js'), function() { alert("Loaded ! "); $('#btnResimYukle').live('click', function() { $.fn.colorbox({ iframe: true, width: 700, height: 600, href: ResolveUrl('~/Yonetim/DosyaYukle.aspx') }); return false; }); }); } </script> First i want to ask you very good people, i am always calling js files with $.getScript function. Are they always downloading in every $.getScript requests? And if it is so, how can i prevent that? is this work: $.ajaxSetup({ cache: true, async: false }); Second, i am always getting this error when i press F5 or Ctrl+F5 : But when i press enter key on url, there is no error :s

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• APress Deal of the Day 16/August/2014 - Node.js Recipes

  - by TATWORTH

  Originally posted on: http://geekswithblogs.net/TATWORTH/archive/2014/08/15/apress-deal-of-the-day-16august2014---node.js-recipes.aspxToday’s $10 Deal of the Day from APress at http://www.apress.com/9781430260585 is Node.js Recipes. “Node.js Recipes is your one-stop reference for solving Node.js problems. Filled with useful recipes that follow a problem/solution format, you can look up recipes for many situations that you may come across in your day-to-day server-side development. ”

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• A Keyword Research Service is the Backbone of SEO

  If you do not have the means or know-how to effectively research keywords, you may hire a company to do professional keyword research service for you. Even if you have a fundamental knowledge of keywords, paid keyword services will save time and create better results.

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• APress Deal of the Day 20/August/2014 - Node.js Recipes

  - by TATWORTH

  Originally posted on: http://geekswithblogs.net/TATWORTH/archive/2014/08/20/apress-deal-of-the-day-20august2014---node.js-recipes.aspxToday’s $10 Deal of the Day from APress at http://www.apress.com/9781430260585 is Node.js Recipes. “Node.js Recipes is your one-stop reference for solving Node.js problems. Filled with useful recipes that follow a problem/solution format, you can look up recipes for many situations that you may come across in your day-to-day server-side development. ”

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• Send post request from client to node.js

  - by Husar

  In order to learn node.js I have built a very simple guestbook app. There is basically just a comment form and a list of previous comments. Currently the app is client side only and the items are stored within local storage. What I want to do is send the items to node where I will save them using Mongo DB. The problem is I have not yet found a way to establish a connection to send data back and forth the client and node.js using POST requests. What I do now is add listeners to the request and wait for data I send: request.addListener('data', function(chunk) { console.log("Received POST data chunk '"+ chunk + "'."); }); On the client side I send the data using a simple AJAX request: $.ajax({ url: '/', type: 'post', dataType: 'json', data: 'test' }) This does not work at all in them moment. It could be that I don't know what url to place in the AJAX request 'url' parameter. Or the whole thing might just be the build using the wrong approach. I have also tried implementing the method described here, but also with no success. It would really help if anyone can share some tips on how to make this work (sending POST request from the client side to node and back) or share any good tutorials. thanks.

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• Adding select menu default value via JS?

  - by purpler

  Hi, i'm developing a meta search engine website, Soogle and i've used JS to populate select menu.. Now, after the page is loaded none of engines is loaded by default, user needs to select it on his own or [TAB] to it.. Is there a possibility to preselect one value from the menu via JS after the page loads? This is the code: Javascript: // SEARCH FORM INIT function addOptions(){ var sel=document.searchForm.whichEngine;for(var i=0;i<arr.length;i++){ sel.options[i]=new Option(arr[i][0],i)}} function startSearch(){ searchString=document.searchForm.searchText.value;if(searchString!=""){ var searchEngine=document.searchForm.whichEngine.selectedIndex; var finalSearchString=arr[searchEngine][1]+searchString;location.href=finalSearchString}return false} function checkKey(e){ var character=(e.which)?e.which:event.keyCode;if(character=='13'){ return startSearch()}} // SEARCH ENGINES INIT var arr = new Array(); arr[arr.length] = new Array("Web", "http://www.google.com/search?q="); arr[arr.length] = new Array("Images", "http://images.google.com/images?q="); arr[arr.length] = new Array("Knoweledge","http://en.wikipedia.org/wiki/Special:Search?search="); arr[arr.length] = new Array("Videos","http://www.youtube.com/results?search_query="); arr[arr.length] = new Array("Movies", "http://www.imdb.com/find?q="); arr[arr.length] = new Array("Torrents", "http://thepiratebay.org/search/"); HTML: <body onload="addOptions();document.forms.searchForm.searchText.focus()"> <div id="wrapper"> <div id="logo"></div> <form name="searchForm" method="POST" action="javascript:void(0)"> <input name="searchText" type="text" onkeypress="checkKey(event);"/> <span id="color"></span> <select tabindex="1" name="whichEngine" selected="Web"></select> <br /> <input tabindex="2" type="button" onClick="return startSearch()" value="Search"/> </form> </div> </body>

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• How to handle duplicate values in d3.js

  - by Mario

  First I'm a d3.js noob :) How you can see from the title I've got a problem with duplicated data and aggregate the values is no option, because the name represent different bus stops. In this example maybe the stops are on the fron side and the back side of a building. And of course I like to show the names on the x-axis. If i created an example and the result is a bloody mess, see jsFiddel. x = index name = bus stop name n = value I've got a json e.g.: [{ "x": 0, "name": "Corniche St / Abu Dhabi Police GHQ", "n": 113 }, { "x": 1, "name": "Corniche St / Nation Towers", "n": 116 }, { "x": 2, "name": "Zayed 1st St / Al Khalidiya Public Garden", "n": 146 }, ... { "x": 49, "name": "Hamdan St / Tariq Bin Zeyad Mosque", "n": 55 }] The problem: It is possible that the name could appear more then once e.g. { "x": 1, "name": "Corniche St / Nation Towers", "n": 116 } and { "x": 4, "name": "Corniche St / Nation Towers", "n": 105 } I like to know is there a way to tell d3.js not to use distinct names and instead just show all names in sequence with their values. Any ideas or suggestions are very welcome :) If you need more information let me know. Thanks in advanced Mario

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• Defining and using controller methods in ember.js

  - by OriginalEXE

  first of all, I am total noob when it comes to OOP in JS, this is new to me so treat me like a noob. I am building my first ember.js application and I am stuck (not the first time but I would get unstuck by myself, this is a tough one though). I have two models: forms entries Entries is of course in (one to many) relationship to forms, so each form can have as many properties. Form properties: id : DS.attr( 'number' ), title : DS.attr( 'string' ), views : DS.attr( 'number' ), conversion : DS.attr( 'number' ), entries : DS.hasMany( 'entry' ) Entry properties: id : DS.attr( 'number' ), parent_id: DS.belongsTo( 'form' ) Now, I have forms route that displays all forms in tabled view, and each table row has some info like form id, name etc. and that works great. What I wanted to do is display the number of entries each form has. I figured I should do that via controller, so here is my controller now: // Form controller App.FormController = Ember.ObjectController.extend({ entriescount: function() { var entries = this.get( 'store').find( 'entry' ); return entries.filterBy( 'parent_id', this.get( 'id' ) ).get( 'length' ); }.property( '[email protected]_id') }); Now for some reason, when I use {{entriescount}} in {{#each}} loop, this returns nothing. It also returns nothing in single form route. Note that in both cases, {{title}} for example works. I am wondering, am I going the right way by using controller for this, and how do I get controller to output the data. Thanks

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• problems piping in node.js

  - by alvaizq

  We have the following example in node.js var http = require('http'); http.createServer(function(request, response) { var proxy = http.createClient(8083, '127.0.0.1') var proxy_request = proxy.request(request.method, request.url, request.headers); proxy_request.on('response', function (proxy_response) { proxy_response.pipe(response); response.writeHead(proxy_response.statusCode, proxy_response.headers); }); setTimeout(function(){ request.pipe(proxy_request); },3000); }).listen(8081, '127.0.0.1'); The example listen to a request in 127.0.0.1:8081 and sends it to a dummy server (always return 200 OK status code) in 127.0.0.1:8083. The problem is in the pipe among the input stream (readable) and output stream (writable) when we have a async module before (in this case the setTimeOut timing). The pipe doesn't work and nothing is sent to dummy server in 8083 port. Maybe, when we have a async call (in this case the setTimeOut) before the pipe call, the inputstream change to a state "not readable", and after the async call the pipe doesn't send anything. This is just an example...we test it with more async modules from node.js community with the same result (ldapjs, etc)... We try to fix it with: - request.readable =true; //before pipe call - request.pipe(proxy_request, {end : false}); with the same result (the pipe doesn't work). Can anybody help us? Many thanks in advanced and best regards,

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