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• optional characters in javascript regular expression

  - by Anthony

  I am trying to build a regular expression in javascript that checks for 3 word characters however 2 of them are are optional. So I have: /^\w\w\w/i what I am stumped on is how to make it that the user does not have to enter the last two letters but if they do they have to be letters

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• javascript setinterval function problem

  - by vakas

  i am using this code <a onclick="javascript:var t=setInterval("GetUpdates(5,ajaxResult)",300);">GetUpdates</a> but getting the syntax error

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• location.href in javascript ?

  - by Karandeep Singh

  javascript: location.href("somefile.php"); // successfully working with IE location.href = "somefile.php"; Ques 1. first code is not work with Safari. Why? Ques 2. What is the difference b/w these codes. Thanks,

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• Javascript timezone solution needed

  - by user198729

  I have unix timestamps from time zone X which is not known, the current timestamp(now()) in TZ X is known 1275143019, how to approach a javascript function so that it can generate the datetime in the users current TZ in the format 2010-05-29 15:32:35 ?

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• JavaScript add to clipboard with additional text

  - by Kemo

  I know how to add to clipboard with JavaScript, but what I want now is TechCrunch clipboard trick; when someone copies some text ( ctrl+c, right click copy, clicking on a copy link on-site ), additional text is added to the clipboard ( like "this text was copied from ... ). I know they use Tynt, but don't really know is this a feature you get with it or custom coded?

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• Can we insert javascript into any webpage loaded in the browser

  - by pokrate

  Hi I am looking into methods to inject javascript into any webpage loaded in the browser, so that I can traverse through the page's DOM. I use JQUERY for my scripting needs. Method should work in all browsers. I tried using IFRAME and adding some html into it, but I cant. Please suggest some ways.

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• Check if a anchor exists in the url Prototype JavaScript

  - by Podlsk

  A bit of a basic question but how may I check if a anchor is in the url when I load the page? For example www.mysite.com/mypage#show And then in the JavaScript I can go if #show exists do this Thanks.

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• Write an expression in javascript

  - by Hero

  hi everybody... I need a javascript code that split a string like below: Input string: "a=aa| b=b||b | c=cc" Output: a=>aa b=>b||b c=>cc I'd written different codes like: split(/ \ | /) or Split(/ \| (?! \ |) /) but didn't work. please help me... I really need it fast.

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• .trim() in javascript not working in IE

  - by Jin Yong

  I tired to apply .trim() in javascript for one of my code. it's working fine under mozilla, but error display once I tried in IE8, does anyone know what is going on here? anyway I can make it work in IE? code: var ID = document.getElementByID('rep_id').value.trim(); error display: Message: Object doesn't support this property or method Line: 604 Char: 2 Code: 0 URI: http://test.localhost/test.js

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• Making links clickable in Javascript?

  - by mdorseif

  Is there an simple way of turning a string from Then go to http:/example.com/ and foo the bar! into Then go to <a href="http://example.com">example.com</a> and foo the bar! in Javascript within an existing HTML page?

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• How do templating engines in JavaScript work?

  - by Randy Gurment

  Hello, Could you please explain me, how do templating engines in JavaScript work? Thank you. JSON { "color" : "red"} Template <strong><%=color%></strong> Result <strong>Red</strong>

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• Javascript: 'this' changes when assigning a property?

  - by Pickels

  I know 'this' can be a problem when you don't understand Javascript well but this one got me a little puzzled. var ControlTypes = { TextBox: function () { console.log(this); this.Name = "TextBox"; console.log(this); } } ControlTypes.TextBox(); Firebug gives the following result: Object {} Object { Name="TextBox"} The first object is ControlTypes and the second one is Textbox. Could anybody explain the behavior behind this?

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• Loop over array and set all vars to false or true in javascript

  - by Sixfoot Studio

  Hi All, I need to loop over my array and set all the vars to false or true. I have tried numerous options, none of which are working and it's clearly my lack of javascript syntax knowledge..Please take a look at this: var closeAllCells = [IncomeOpen = "false", RehabOpen = "false", AttendantCareOpen = "false", HomeMaintenanceOpen = "false", DependantCareOpen = "false", IndexationOpen = "false", DeathFuneralOpen = "false", ComprehensiveOpen = "false", CollisionOpen = "false", LiabilityOpen = "false", DCPDOpen = "false"]; So my thinking is that I can just loop over this as follows for (var i=0;i<closeAllCells.length;i++) { closeAllCells[i] = true; // or false if I wished }

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• Get Windows username with JavaScript?

  - by cwhiii

  I am working a Firefox addon (which is written in JavaScript) and need to determine the Windows user currently logged on. Is there a way to do this?

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• how can i tell if a javascript function works across browsers

  - by lowellk

  How can I tell if a given javascript function will work across browsers? For instance, I want to use String.trim() and I see that it works in Firefox, but will it work in all the other major browsers? I imagine there is a good doc online somewhere, but I can't find it.

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• javascript Image Resize

  - by chazzuka

  does anyone knows how to resize image proportionaly using javascript?, i have tried to modify the DOM adding attributes height & Width on the fly, but seems did not work on IE6

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• Calendar using Javascript/ PHP/ mySQL

  - by Gushiken

  for a current webapp i need a "outlook-like" calendar... Here are some requirements for the calendar: week-view for the appointments different appointment types direct display of the length and time of the date (like in googleCalendar) multiple appointments for the same time only using javascript, php and any DB We need the calendar for the Zend Framework, so if the Calendar doesn't already support the ZF, the source needs to be editable! do you know any calendar which fits my needs? or do you have any tipps for developing one by myself?

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• How can I obfuscate JavaScript?

  - by Teifion

  I want to make a JavaScript application that's not open source, and thus have two questions: What's the best way to obfuscate the code? What's the best way to obfuscate the strings themselves within the application (assuming that the answer to #1 does not handle this)?

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• getting the path of a javascript file

  - by buggy1985

  Hi, In a javascript file (e.g. script.js) I need a variable that contains the absolute path to this file. How can I do this dynamically? Thanks.

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• Add to favorites in JavaScript for IE6+, FF and Safari

  - by mrmuggles

  I tried some "add to favorties" JavaScript scripts.. With IE8, I get an "access denied" (is that even possible to add a bookmark via JS with IE8?) and it just doesn't work with IE6... Anybody has a good script that works on most browsers? Thanks!

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• Javascript Event for Select element Selection

  - by JP

  Hi everyone, I'm looking to find the Javascript Event I need to put into jQuery's .bind function in order to have the function triggered when a selection is made from a <select> element. At the moment I'm using .bind('change',function() { ...}) but I need the event to trigger when the selected option is chosen again. Any suggestions?

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• Passing a string parameter in a JavaScript function on MVC

  - by PlayKid

  Hi there, I tried to pass a string value into a JavaScript function like below: <%= "'" + prop.property_description + "'") %>) But it does not seems to be the best option, is there a better way to do the above without concatenate the string values with "'"? Thanks

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• JavaScript - Inheritance in Constructors

  - by j0ker

  For a JavaScript project we want to introduce object inheritance to decrease code duplication. However, I cannot quite get it working the way I want and need some help. We use the module pattern. Suppose there is a super element: a.namespace('a.elements.Element'); a.elements.Element = (function() { // public API -- constructor Element = function(properties) { this.id = properties.id; }; // public API -- prototype Element.prototype = { getID: function() { return this.id; } }; return Element; }()); And an element inheriting from this super element: a.namespace('a.elements.SubElement'); a.elements.SubElement = (function() { // public API -- constructor SubElement = function(properties) { // inheritance happens here // ??? this.color = properties.color; this.bogus = this.id + 1; }; // public API -- prototype SubElement.prototype = { getColor: function() { return this.color; } }; return SubElement; }()); You will notice that I'm not quite sure how to implement the inheritance itself. In the constructor I have to be able to pass the parameter to the super object constructor and create a super element that is then used to create the inherited one. I need a (comfortable) possibility to access the properties of the super object within the constructor of the new object. Ideally I could operate on the super object as if it was part of the new object. I also want to be able to create a new SubElement and call getID() on it. What I want to accomplish seems like the traditional class based inheritance. However, I'd like to do it using prototypal inheritance since that's the JavaScript way. Is that even doable? Thanks in advance! EDIT: Fixed usage of private variables as suggested in the comments. EDIT2: Another change of the code: It's important that id is accessible from the constructor of SubElement.

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• Usage of values stored in $_GET / $_SESSION in Javascript

  - by Iuhiz

  Hi, i'm pretty new to Javascript and PHP so please bear with me if i'm asking some really dumbed down questions. Ok, say i need to use values stored in a PHP $_GET or $_SESSION, is it advisable to just do something like var something = PHP echo $_SESSION or $_GET

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• HTML5 javascript libraries

  - by John Nilsson

  I'm looking for javascript libraries that helps with HTML5 development. Please only post one library per answer, and don't forget to describe it.

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