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  • Javascript get Function Name?

    - by Scott
    How can I access a function name from inside that function? var my.namespace.myFunc = function() { this.getFn = function() { // access fully qualified name (ie "my.namespace.myFunc") } } var obj = new my.namespace.myFunc(); console.info(obj.getFn());

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  • javaScript .splice() not working on correctly

    - by adardesign
    I am setting a cookie for each navigation container that is clicked on. It sets an array that is joined and set the cookie value. if its clicked again then its removed from the array. It somehow buggy. It only splices after clicking on other elements. and then it behaves weird. Thanks much. var navLinkToOpen; var setNavCookie = function(value){ var isSet = false; var checkCookies = checkNavCookie() setCookieHelper = checkCookies? checkCookies.split(","): []; console.log("value passed", value) for(i in setCookieHelper){ if(value == setCookieHelper[i]){ setCookieHelper.splice(value,1); isSet = true; } } if(!isSet){ setCookieHelper.push(value) } setCookieHelper.join(",") document.cookie = "navLinkToOpen"+"="+setCookieHelper; } var checkNavCookie = function(){ var allCookies = document.cookie.split( ';' ); for (i = 0; i < allCookies.length; i++ ){ temp = allCookies[i].split("=") if(temp[0].match("navLinkToOpen")){ var getValue = temp[1] } } return getValue || false } $(document).ready(function() { $("#LeftNav li").has("b").addClass("navHeader").not(":first").siblings("li").hide() $(".navHeader").click(function(){ $(this).toggleClass("collapsed").nextUntil("li:has('b')").slideToggle(300); setNavCookie($('.navHeader').index($(this))) return false }) console.log("init",document.cookie) var testCookies = checkNavCookie(); if(testCookies){ finalArrayValue = testCookies.split(",") for(i in finalArrayValue){ $(".navHeader").eq(finalArrayValue[i]).toggleClass("collapsed").nextUntil(".navHeader").slideToggle (0); } } });

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  • FB Connect JavaScript SDK : Comments Not Working

    - by Mayank
    Hi, I am working on the new API that FB has provided. I tried using FB connect's comment system. I did exactly what is specified in the examples(Or at least I tried to do that). In the code i have used <fb:comments></fb:comments> But when the page is rendered, a iframe appears where My FB page is visible. Sometimes there is nothing! My Test Page Can someone please suggest how can I proceed?

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  • Repeat String - Javascript

    - by brad
    What is the best or most concise method for returning a string repeated an arbitrary amount of times? The following is my best shot so far: function repeat(s, n){ var a = []; while(a.length < n){ a.push(s); } return a.join(''); }

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  • get value from css using document.getElementById().style.height javascript

    - by Jamex
    Hi, Please offer insight into this mystery. I am trying to get the height value from a div box by var high = document.getElementById("hintdiv").style.height; alert(high); I can get this value just fine if the attribute is contained within the div tag, but it returns a blank value if the attribute is defined in the css section. This is fine, it shows 100px as a value. The value can be accessed. <div id="hintdiv" style="height:100px; display: none;"> . . var high = document.getElementById("hintdiv").style.height; alert(high); This is not fine, it shows an empty alert screen. The value is practically 0. #hintdiv { height:100px display: none; } <div id="hintdiv"> . . var high = document.getElementById("hintdiv").style.height; alert(high); But I have no problem accessing/changing the "display:none" attribute whether it is in the tag or in the css section. The div box displays correctly by both attribute definition methods (inside the tag or in the css section). I also tried to access the value by other variations, but no luck document.getElementById("hintdiv").style.height.value ----> undefined document.getElementById("hintdiv").height ---->undefined document.getElementById("hintdiv").height.value ----> error, no execution Any solution? TIA.

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  • Scroll to a text position in Javascript

    - by Andy
    I have a real-time HTML editor, with a textarea on the left for code entry, and a 'preview' DIV on the right to contain the preview of the code entered. At the moment, when editing the code in the left pane, the preview just sits where it is, so often the part of the code you're editing is not in the visible area of the preview (especially when images are involved). My question is how do I make the preview scroll to show the part of the code that's currently being edited? Here is the page I have so far: http://www.caerphoto.com/rtedit.html You'll notice in the source I have a (currently unused) matchPreview() function that tries to match the scroll position of the preview based on the scroll position of the textarea, but obviously if images or large text are involved the two panes no longer match.

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  • Can anyone explain this snippet of Javascript?

    - by karthick6891
    Can anyone explain the following code? Forget the sine and cosine parts. Is it trying to build a space for the object? objectsInScene = new Array(); for (var i=space; i<180; i+=space) { for (var angle=0; angle<360; angle+=space) { var object = {}; var x = Math.sin(radian*i)*radius; object.x = Math.cos(angle*radian)*x; object.y = Math.cos(radian*i)*radius; object.z = Math.sin(angle*radian)*x; objectsInScene.push(object); } }

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  • how to work with javascript typed arrays without using for

    - by ramesh babu
    var sendBuffer = new ArrayBuffer(4096); var dv = new DataView(sendBuffer); dv.setInt32(0, 1234); var service = svcName; for (var i = 0; i < service.length; i++) { dv.setUint8(i + 4, service.charCodeAt(i)); } ws.send(sendBuffer); how to workout this wihout using for loop. for loop decreasing performance while works with huge amount of data.

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  • Storing DOM reference elements in Javascript array

    - by webzide
    Dear experts, I was trying to dynamically generate DOM elements using JS. I read from Douglas Crockford's book that DOM is very very poorly structured. Anyways, I would like to create a number of DIVISION elements and store the reference into an array so it could be accessed later. Here's the code for(i=0;i<3;i++){ var div=document.body.appendChild(document.createElement("div")); var arr=new Array(); arr.push(div); } Somehow this would not work..... There is only 1 div element created. When I use the arr.length to test the code there is only 1 element in the array. Is there another way to accomplish this. THanks in advance

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  • javascript multiple input textbox validation

    - by murugesan
    I have 'n' number of textbox on a form, after the user enters a value in a textbox, i need to validate its not a duplicate in the other textboxes. Ex : Textbox[0] : 1 Textbox[1] : 2 Textbox[2] : 3 Textbox[4] : 1 For this example it should alert saying that '1' have entered twice. Let me know what to be done.

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  • How to reference an anonymous JavaScript function?

    - by ProfK
    I'm trying to call a Page Method using a jQuery 'attached' event function, in which I like to use the closure to keep the event target local, as below, but page method calls declare several 'error' functions, and I would like to use one function for all of them. If, in the below code, I was handling an error and not success, how could I use my single, anonymous handler for all 3 error functions? $(":button").click(function () { var button = this; PageMethods.DoIt( function (a, b, c) { alert(button); }); }); This example passes an anonymous function for the success callback. There is only one of these. If I was passing an error callback, how could I use 'function (e, c, t)' for all 3 error callbacks?

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  • How to implement Gradient Opacity (Mask) using html css javascript

    - by brz dot net
    I have to show 25% right screen in such way that the text looks appeared from right. For this I need to set opacity from 0 to 100 at 25% right side screen means rightmost opacity would be 0 and at 75% the opacity would be 100. For this, I took a Div and set opacity but It looks bad because of border. I need to gray out text. It looks a block. Let me know how I can implement cross browser compatible gradient opacity mask for right screen text. What is the best way to do this?

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  • JavaScript (SVG drawing): Positioning x amount of points in an area

    - by Jack
    I'm using http://raphaeljs.com/ to try and draw multiple small circles. The problem I'm having is that the canvas has a fixed width, and if I want to draw, say, 1000 circles, they don't wrap onto a 'new line' (because you have to specify the xy position of each circle). E.g. I want this: .................................................. to look like this: ............................ ...................... At the moment I'm doing this: for ( var i = 0; i < 1000; i++ ) { var multiplier = i*3; if ( i <= 50 ) { paper.circle((2*multiplier),2,2); } else if ( i >= 51 && i <= 101 ) { paper.circle((2*multiplier) - 304,8,2); } else if ( i >= 152 && i <= 202 ) { paper.circle((2*multiplier) - 910,14,2); } } For reference: circle(x co-ord, y co-ord, radius) This is messy. I have to add an if statement for every new line I want. Must be a better way of doing it..?

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  • Javascript in chrome plugin has syntax error

    - by Cyclone
    chrome.tabs.executeScript(null, {code:"$.each(selectValues, function(key='" + timestamp + "', value='Custom') { $('#expire'). append($(\"<option></option>\"). attr(\"value\",key). text(value)); });"}); It says that the first line has a syntax error, and the WebKit inspector shows odd highlighting patterns. What's wrong with that? A friend thinks I need to escape some characters somewhere. Thanks for the help!

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  • Twitter Client using JavaScript and Oauth

    - by MP
    Is there any good tutorial or example to build a Twitter client using popup and oauth for login (Ex: http://twitgoo.com/) Also once the user logs in, the new tweets showed without any page refresh and also the ability to post a tweet without page refresh. If there is no good example, please suggest the API or libraries i need or any general suggestion.

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  • Change ExtJS Grid Height in Javascript

    - by williamtroup
    How can I point at the object of a ExtJS Grid and manually set the height (in pixels)? For example, with this same: var grid = new Ext.grid.GridPanel({ store: store, columns: [ {id:'company',header: 'Company', width: 160, sortable: true, dataIndex: 'company'}, {header: 'Price', width: 75, sortable: true, renderer: 'usMoney', dataIndex: 'price'}, {header: 'Change', width: 75, sortable: true, renderer: change, dataIndex: 'change'}, {header: '% Change', width: 75, sortable: true, renderer: pctChange, dataIndex: 'pctChange'}, {header: 'Last Updated', width: 85, sortable: true, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange'} ], stripeRows: true, autoExpandColumn: 'company', height: 350, width: 600, title: 'Array Grid', // config options for stateful behavior stateful: true, stateId: 'grid' }); I would i be able to point at the "grid" object and then set the size of the grid? Any help would be fantastic!

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