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  • Whats faster in Javascript a bunch of small setInterval loops, or one big one?

    - by RobertWHurst
    Just wondering if its worth it to make a monolithic loop function or just add loops were they're needed. The big loop option would just be a loop of callbacks that are added dynamically with an add function. adding a function would look like this setLoop(function(){ alert('hahaha! I\'m a really annoying loop that bugs you every tenth of a second'); }); setLoop would add the function to the monolithic loop. so is the is worth anything in performance or should I just stick to lots of little loops using setInterval?

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  • What's wrong with this javascript?

    - by Arlen Beiler
    What's wrong with this code? var divarray = document.getElementById("yui-main").getElementsByTagName("div"); var articleHTML = array(); var absHTML; var keyHTML; var bodyHTML = array(); var i = 0; for ( var j in divarray) { if(divarray[i].className == "articleBody"){ alert("found"); articleHTML = divarray[i]; break; } bodyHTML[i] = ''; if(articleHTML[i].className == "issueMiniFeature"){continue;} if(articleHTML[i].className == "abstract"){absHTML = articleHTML[i]; continue;} if(articleHTML[i].className == "journalKeywords"){keyHTML = articleHTML[i]; continue;} bodyHTML[i] = articleHTML[i]; i++; } This is the error I am getting: ReferenceError: array is not defined I am using Google Chrome if it helps any.

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  • Call server side method from JSON

    - by Zerotoinfinite
    How to call a method on a server side from JSON. Below is the code I am using SERVER SIDE: [WebMethod] private void GetCustomer( string NoOfRecords) { string connString = "Data Source=Something;Initial Catalog=AdventureWorks;Trusted_Connection=True;"; SqlConnection sCon = new SqlConnection(connString); SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Sales.Customer WHERE CustomerID < '" + NoOfRecords+ "' ", sCon); DataSet ds = new DataSet(); da.Fill(ds); GvDetails.DataSource = ds.Tables[0]; GvDetails.DataBind(); } On Client Side: var txtID = document.getElementById('txtValue'); $.ajax({ type: "POST", url: "Default.aspx/GetCustomer", data: "{Seconds:'" + txtID +"'}", contentType: "application/json; charset=utf-8", dataType: "json", success: function(response) { alert(response); } }); Now I want that on button click, I would call the function at the client side [JSON], which pass the textbox value to the function. Please help

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  • return type of modal dialog box is undefined

    - by Aru
    Hi, I am using the modal dialog box to open the modal dialog. Here is the code var Window; function PopDis() { Window=window.showModalDialog('/collector/modalBox.jsp', '', 'dialogHeight:300px; dialogWidth:500px;scroll:no; status:no; help:no; center:yes; resizable:no'); } In another function i want to close the modal dialog. Code is function CloseModalDialog() { alert("in fun close"+Window); Window.close(); } But var Window is undefined hence unable to close the window. Please give me the solution.

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  • JavaScript: Change to Absolute Positioning

    - by Doug
    I'm trying to center a page on any resolution while still being able to use absolute positioning to move pictures. I figure that the best way would be to have a table positioned relatively in the beginning in the center of the page, then change it to absolute positioning in the onload of the page. I think the correct line is: document.getElementById("Object").style.position = "absolute"; However, I put an alert box after it asking where the left side of the object is, I get undefined. But, if I directly assign it to a position (Object.style.left = 500) I will get that number. So I can assign it a value, meaning it is in absolute position, but I cannot pull a value out of that. Kind of confusing but hopefully it makes sense and someone knows what to do. Thanks.

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  • execute javascript method after method excution complete ?

    - by James123
    I want execute below callback()method after completion of process document.getElementById('btnDownload').click(); method. click() is the code behind method. That means, I mean after complete process of click() then excute callback() method. Because my modelpop is not hiding in code behind. So I want hide in javascript method. function LoadPopup() { // find the popup behavior this._popup = $find('mdlPopup'); // show the popup this._popup.show(); // synchronously run the server side validation ... document.getElementById('btnDownload').click(); callback(); } function callback() { this._popup = $find('mdlPopup'); // hide the popup this._popup.hide(); alert("hi"); }

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  • Ember multiple property changes but want to trigger single event

    - by Ankur Agarwal
    I have a ArrayController for date picker with properties to and from. Now when user selects a new date range from the UI both to and from value changes. So a function which observers on to and from is trigger twice for a single change in date range. I want to trigger the function only one every date range change. Any suggestions how to do that with ember app = Ember.Application.create(); app.Time = Ember.ArrayController.create({ to: null, from: null, rootElement: "#time", debug1: function() { this.set('to', 1); this.set('from', 2); }, debug2: function() { this.setProperties( { 'to': 3, 'from': 4 }); }, debug3: function() { this.beginPropertyChanges(); this.set('to', 5); this.set('from', 6); this.endPropertyChanges(); }, search: function() { alert('called'); }.observes('to', 'from') }); View in JS Fiddle

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  • javscript smart array loop, need some help here

    - by Totty
    var _test1 = []; _test1[88] = 'sex'; _test1[1999990] = 'hey'; for(i = 0, length = _test1.length; i < length; i++){ if(_test1[i] == 'hey'){ alert(_test1.length); } } this takes a lot of time, and there are only 2 values. Is there any way to be faster? Or to use another system that index objects by a number and then loop them fast? thanks

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  • Using the Module Pattern for larger projects

    - by Rob
    I'm interested in using the Module Pattern to better organize my future projects. Unfortunately, there are only a few brief tutorials and proof-of-concept examples of the Module Pattern. Using the module pattern, I would like to organize projects into this sort of structure: project.arm.object.method(); Where "project" is my global project name, "arm" is a sub-section or branch of the project, "object" is an individual object, and so on to the methods and properties. However, I'm not sure how I should be declaring and organizing multiple "arms" and "objects" under "project". var project = window.project || {}; project.arm = project.arm || {}; project.arm.object = (function() { var privateVar = "Private contents."; function privateMethod() { alert(privateVar); } return { method: privateMethod }; }()); Are there any best practices or conventions when defining a complex module structure? Should I just declare a new arm/object underneath the last?

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  • lwjgl 101: How can I write applets?

    - by Vuntic
    I have a working app in lwjgl. It doesn't do much yet; I've just started, but it does compile and run like it's supposed to. I want to make it into an applet. I've followed the guide here, and I have an applet that runs nicely and displays text and such in the applet area and can access the functions of lwjgl (like Sys.alert), but I can't figure out how to get opengl to actually render. I've tried extending an AWTGLCanvas and calling this.add(myAWTGLCanvas), where this is the Applet that I'm using, but... nothing. The initGL() and paintGL() methods never get called. I wonder if I'm supposed to be doing something with Display, but that's not for applets, right? Help? Also: This counts as a "beginner" question, right? Edit: Here's a simplified version of what I have.

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  • Programmatically manipulating DOM element value doesn't fire onchange event

    - by Johan Fredrik Varen
    Hi all. I've got a hidden form field, and when a button gets pressed the value of the hidden field is changed. Now, I've added an observer to the hidden field, listening for changes to occur. For some reason, though, the event listener never kicks in, even though the value of the hidden element changes. I'm using Prototype and Firefox 3.6. The code looks roughly like this: button.observe('click', function(event) { hiddenField.setValue(someValue); }); hiddenField.observe('change', function(event) { alert('It works!'); }); Does anyone have a clue why the latter observer doesn't execute? Thanks!

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  • Using Javascript in Google Web Optimizer Page Sections

    - by Chris S
    Is it possible to use Javascript in the content of a page section variation? I want different variations to make different Javascript function calls, so I have variation content like: Variation 1 <script type="text/javascript">my_func('abc');</script> Variation 2 <script type="text/javascript">my_func('def');</script> However, when I preview my page, I can't verify that my_func(content){ alert(content); } is actually being run. Does GWO not support JS content, or am I missing something?

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  • Is there a better way to create an object-oriented class with jquery?

    - by Devon
    I use the jquery extend function to extend a class prototype. For example: MyWidget = function(name_var) { this.init(name_var); } $.extend(MyWidget.prototype, { // object variables widget_name: '', init: function(widget_name) { // do initialization here this.widget_name = widget_name; }, doSomething: function() { // an example object method alert('my name is '+this.widget_name); } }); // example of using the class built above var widget1 = new MyWidget('widget one'); widget1.doSomething(); Is there a better way to do this? Is there a cleaner way to create the class above with only one statement instead of two?

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  • XMLHttpRequest inside an object: how to keep the reference to "this"

    - by Julien
    I make some Ajax calls from inside a javascript object.: myObject.prototye = { ajax: function() { this.foo = 1; var req = new XMLHttpRequest(); req.open('GET', url, true); req.onreadystatechange = function (aEvt) { if (req.readyState == 4) { if(req.status == 200) { alert(this.foo); // reference to this is lost } } } }; Inside the onreadystatechange function, this does not refer to the main object anymore, so I don't have access to this.foo. Ho can I keep the reference to the main object inside XMLHttpRequest events?

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  • Change Projection in OpenLayers Map

    - by deamon
    I want to set "EPSG:4326" as the projection of an OpenLayers map, but when I try it, I always get "EPSG:900913". function init() { var options = { projection: new OpenLayers.Projection("EPSG:4326") // ignored }; map = new OpenLayers.Map('map', options); var layer = new OpenLayers.Layer.OSM.Osmarender("Osmarender"); map.addLayer(layer); ... alert(map.getProjection()); // returns "EPSG:900913" ... } How can I set the Projection to EPSG:4326?

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  • JavaScript check field value based on variable value

    - by Nikita Sumeiko
    I have an anchor like this: <a href="#" rel="1 4 7 18 ">Anchor</a> Where 'rel' attribute values are ids of some items. Than I have a form with an input, where user should type an id and click submit button. On submit button click I need to check the value of input like this: var value = $('a').attr('rel'); if ( value == '1' || value == '4' || value == '7' || value == '18') { // however I need the line above are created dynamically based on 'value' var alert('The id exists'); return false; } else { return true; } So, the question is how to create a line below dynamically based on anchor 'rel' attribute values?! This is the line: if ( value == '1' || value == '4' || value == '7' || value == '18') {

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  • Android v1.5 w/ browser data storage

    - by Sirber
    I'm trying to build an offline web application which can sync online if the network is available. I tryed jQuery jStore but the test page stop at "testing..." whitout result, then I tryed Google Gears which is supposed to be working on the phone but it gears is not found. if (window.google && google.gears) { google.gears.factory.getPermission(); // Database var db = google.gears.factory.create('beta.database'); db.open('cominar-compteurs'); db.execute('create table if not exists Lectures' + ' (ID_COMPTEUR int, DATE_HEURE timestamp, kWh float, Wmax float, VAmax float, Wcum float, VAcum float);'); } else { alert('Google Gears non trouvé.'); } the code does work on Google Chrome v5.

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  • Gson module not found Blackberry Java application

    - by Curro
    Hi. I'm developing a simple application for Blackberry and i'm using Google's gson to retrieve some data from a server. The UI was working fine but when I added the gson part it started failing, it wont run. When I run the application in the simulator it show this error: "Uncaught: RuntimeException" on that annoying white screen of death and after holding the click button I can see that there is an alert dialog that says "Module 'gson-1.4' not found". However I did added "gson-1.4.jar" in the Project's Properties - Java Build Path - Add External JARs... also, the Gson objects are recognized at my code, no syntax errors at my code. BTW, I'm using Eclipse and the most recent Blackberry SDK Please help

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  • Nhibernate setting query time out period for commands and pessimistic locking

    - by Nagesh
    I wish to specify a specific command timeout (or LOCK_TIMEOUT) for an SQL and once this time out is reached an exception (or alert) has to be raised in nHibernate. The following is an example pseudo-code what I have written: using (var session = sessionFactory.OpenSession()) { using (var sqlTrans = session.BeginTransaction()) { ICriteria criteria = session.CreateCriteria(typeof(Foo)); criteria.SetTimeout(5); //Here is the specified command timout, eg: property SqlCommand.CommandTimeout Foo fooObject = session.Load<Foo>(primaryKeyIntegerValue, LockMode.Force); session.SaveOrUpdate(fooObject); sqlTrans.Commit(); } } In SQL server we used to achieve this using the following SQL: BEGIN TRAN SET LOCK_TIMEOUT 500 SELECT * FROM Foo WITH (UPDLOCK, ROWLOCK) WHERE PrimaryKeyID = 1000001 If PrimaryKeyID row would have locked in other transaction the following error message is being shown by SQL Server: Msg 1222, Level 16, State 51, Line 3 Lock request time out period exceeded Similarly I wish to show a lock time out or command time out information using nHibernate. Please help me to achieve this. Thanks in advance for your help.

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  • Executing <script> elements inserted with .innerHTML

    - by phidah
    I've got a script that inserts some content into an element using innerHTML. The content could for example be: <script type="text/javascript">alert('test');</script> <strong>test</strong> Problem is that the code inside the <script> tag doesn't get executed. I googled it a bit but there were no apparent solutions. If I inserted the content using jQuery $(element).append(content);the script parts got eval'd before being injected into the DOM. Has anyone got a snippet of code that executes all the <script> elements? The jQuery code was a bit complex so I couldn't really figure out how it was done.

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  • Code don't work, can't read property 'className' of undefined

    - by Arlen Beiler
    What is wrong with this code? var divarray = []; var articleHTML = []; var absHTML; var keyHTML; var bodyHTML = []; var i = 0; divarray = document.getElementById("yui-main").getElementsByTagName("div"); for ( var j in divarray) { if(divarray[i].className == "articleBody"){ alert("found"); articleHTML = divarray[i]; break; } bodyHTML[i] = ''; if(articleHTML[i].className == "issueMiniFeature"){continue;} if(articleHTML[i].className == "abstract"){absHTML = articleHTML[i]; continue;} if(articleHTML[i].className == "journalKeywords"){keyHTML = articleHTML[i]; continue;} bodyHTML[i] = articleHTML[i]; i++; } The error I get is: TypeError: Cannot read property 'className' of undefined I am using Google Chrome.

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  • jQuery $.post with PasteBin API

    - by John K
    Ok, I'm trying to use jQuery $.post with the PasteBin API to create a PasteBin page and grab the URL (which the API says it returns). Here is my code so far: $('#send_code').click(function(){ $.post('http://pastebin.com/api_public.php', { paste_name: $('#paste_name').val(), paste_code: $('#paste_code').val() }, function(data){ alert(data); }); } The above script creates the page just fine (I can find them on PasteBin). However, all that is returned is an empty string. I've tried using this same API with php and cURL, and I'm able to retrieve the URL just fine. Can anyone see if I'm doing something wrong? Thanks!

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  • jQuery - events won't fire for dynamically created tab elements..

    - by Amit
    Hi, I am using jQuery UI Tabs. <div id="tabs"> <ul id="tablist"> <li><a href="#fragment-1"><span>One</span></a></li> </ul> </div> I have a button that adds new tabs. I use the following code: var newTabId = $('#tabs').tabs('option', 'selected') + 1; $('#tabs').tabs("add",'someUrl.htm','New Tab',newTabId); (Tab will be added next to the currently selected tab) Now none of the newly added tabs fire any events such as a click or hover $('#tablist li').click(function(){ alert('test message'); }); But events fire properly for the tabs that were there in the initial source code. How to resolve?

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  • ASP.NET MVC Ajax OnBegin/Complete Javascript Problem

    - by mrkcsc
    Hello, I am trying to fire off a javascript method using the OnBegin AjaxOption in an Ajax method. However, when debugging with firebug the callback in unable to find the Javascript method and I do not know why. My code is simple, first I use a basic Ajax method like this: <%= Ajax.ActionLink("Testing", "Testing", new AjaxOptions { OnBegin = "RunThisThing" }) % Then under it I decalre this script. <script type="text/javascript"> function RunThisThing { alert("WORK") } </script> Yet when I try running the page and clicking on the link, Firebug tells me "RunThisThing is not defined". Any idea what I might be doing wrong?

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  • PHP is not called properly in IE using set interval function in Javascript

    - by Hemant
    Hi all, I am trying to show the message updated in DB using the following code var showtime = setInterval('redirect()',5000); ////Redirecting to DB Status ///// function redirect() { xmlhttp = GetXmlHttpObject(); if (xmlhttp==null) { alert ("Browser does not support HTTP Request"); return; } var url="isResultexist.php" xmlhttp.onreadystatechange=stateChanged; xmlhttp.open("GET",url,true); xmlhttp.send(null); } I am collecting the response from PHP here and using it to update the Messages on UI Problem here is it works fine 1st time when it called after 5sec but there after return the Same result even DB is updated, This works fine with Mozilla and google chrome browser regards hemant

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