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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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  • 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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  • JQuery/JavaScript div tag "containment" approach/algorithm?

    - by Pete Alvin
    Background: I've created an online circuit design application where div tags are containers that contain smaller div containers and so forth. Question: For any particular div tag I need to quickly identify if it contains other div tags (that may in turn contain other div tags). I've searched JQuery and I don't see any built-in routine for this. Does anyone know of an algorithm that's quicker than O(n^2)? Seems like I have to walk the list of div tags in an outer loop (n) and have an inner loop (another n) to compare against all other div tags and do a "containment test" (position, width, height), building a list of contained div tags. That's n-squared. Then I have to build a list of all nested div tags by concatenating contained lists. So the total would be O(n^2)+n. There must be a better way?

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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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  • 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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  • 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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  • 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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  • Continuing JavaScript "classes" - enums within

    - by espais
    From a previous question, I have the following: So I have implemented a resource class, now I'd like to continue extending it and add all my constants and enums (or as far as JS will allow...). This is what I currently have: var resources = { // images player : new c_resource("res/player.png"), enemies : new c_resource("res/enemies.png"), tilemap : new c_resource("res/tilemap.png") }; And this is what I would like to continue to extend it to: var resources = { // images player : new c_resource("res/player.png"), enemies : new c_resource("res/enemies.png"), tilemap : new c_resource("res/tilemap.png"), // enums directions : {up:0, right:1, down:2, left:3}, speeds : {slow: 1, medium: 3, fast: 5} }; ... function enemies() { this.dir = resources.directions.down; // initialize to down } When I attempt to access resources.directions.up, my JS script goes down in a flaming pile of burning code. Are enums allowed in this context, and if not, how can I properly insert them to be used outside of a normal function? I have also tried defining them as global to a similar effect. edits: fixed the comma...that was just an error in transcribing it. When I run it in Firefox and watch the console, I get an error that says resources is undefined. The resources 'class' is defined at the top of my script, and function enemies() directly follows...so from what I understand it should still be in scope...

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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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  • 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: 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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  • How to disable back button in browser using javascript or any script

    - by user225269
    Im using wamp server for my php scripts. And Im having difficulties on the logout code. Every time I click on the logout link and then click on the back button on web browser it still shows the page which can only be access by the user who is logged in. I have this code at the beginning of the index.php which is called by the log out link to destroy the session: <?php session_start(); session_destroy(); ?> And I have this at the beginning of the user page: <? session_start(); if(!session_is_registered(myusername)){ header("location:login.php"); } ?> I don't know why the userpage can still be access after the user has logged out. So I'm thinking of disabling the back button when the user has logged out. Please help.

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  • Can this jQuery/Javascript functionality be replicated with PHP

    - by benhowdle89
    This is the code to grab tweets, but i need this in PHP, can anybody offer any insight? $(document).ready( function() { var url = "http://twitter.com/status/user_timeline/joebloggs.json?count=1&callback=?"; $.getJSON(url, function(data){ $.each(data, function(i, item) { $("#twitter-posts").append("<p>" + item.text.linkify() + " <span class='created_at'>" + relative_time(item.created_at) + " via " + item.source + "</span></p>"); }); }); }); String.prototype.linkify = function() { return this.replace(/[A-Za-z]+:\/\/[A-Za-z0-9-_]+\.[A-Za-z0-9-_:%&\?\/.=]+/, function(m) { return m.link(m); }); }; function relative_time(time_value) { var values = time_value.split(" "); time_value = values[1] + " " + values[2] + ", " + values[5] + " " + values[3]; var parsed_date = Date.parse(time_value); var relative_to = (arguments.length > 1) ? arguments[1] : new Date(); var delta = parseInt((relative_to.getTime() - parsed_date) / 1000); delta = delta + (relative_to.getTimezoneOffset() * 60); var r = ''; if (delta < 60) { r = 'a minute ago'; } else if(delta < 120) { r = 'couple of minutes ago'; } else if(delta < (45*60)) { r = (parseInt(delta / 60)).toString() + ' minutes ago'; } else if(delta < (90*60)) { r = 'an hour ago'; } else if(delta < (24*60*60)) { r = '' + (parseInt(delta / 3600)).toString() + ' hours ago'; } else if(delta < (48*60*60)) { r = '1 day ago'; } else { r = (parseInt(delta / 86400)).toString() + ' days ago'; } return r; } function twitter_callback () { return true; }

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  • Why can't I roll a loop in Javascript?

    - by Carl Manaster
    I am working on a web page that uses dojo and has a number (6 in my test case, but variable in general) of project widgets on it. I'm invoking dojo.addOnLoad(init), and in my init() function I have these lines: dojo.connect(dijit.byId("project" + 0).InputNode, "onChange", function() {makeMatch(0);}); dojo.connect(dijit.byId("project" + 1).InputNode, "onChange", function() {makeMatch(1);}); dojo.connect(dijit.byId("project" + 2).InputNode, "onChange", function() {makeMatch(2);}); dojo.connect(dijit.byId("project" + 3).InputNode, "onChange", function() {makeMatch(3);}); dojo.connect(dijit.byId("project" + 4).InputNode, "onChange", function() {makeMatch(4);}); dojo.connect(dijit.byId("project" + 5).InputNode, "onChange", function() {makeMatch(5);}); and change events for my project widgets properly invoke the makeMatch function. But if I replace them with a loop: for (var i = 0; i < 6; i++) dojo.connect(dijit.byId("project" + i).InputNode, "onChange", function() {makeMatch(i);}); same makeMatch() function, same init() invocation, same everything else - just rolling my calls up into a loop - the makeMatch function is never called; the objects are not wired. What's going on, and how do I fix it? I've tried using dojo.query, but its behavior is the same as the for loop case.

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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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  • Get ExternalInterface definitions in Javascript

    - by Jamal Fanaian
    Is there a way to get a list of the exposed functions from a Flash object? For example, you could get a list of all methods in an object by executing: for (var i in object) { if (typeof object[i] == "function") { console.log(i); } } The only issue is that this won't expose any methods registered through the ExternalInterfaces API. I can try and see if the function exists (object['method']) and it tells me it is a function, but I would have to guess every existing method in this manner. NOTE: Obviously, I don't have access to the actionscript.

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  • Is linking a <div> using javascript acceptable?

    - by jhchawk
    I want to link an entire <div>, but CSS2 does not support adding an href to a div (or span for that matter). My solution is to use the onClick property to add a link. Is this acceptable for modern browsers? Example code: <div class="frommage_box" id="about_frommage" onclick="location.href='#';"> <div class="frommage_textbox" id="ft_1"><p>who is Hawk Design?</p></div> My test page is at http://www.designbyhawk.com/pixel. Updated daily. Thanks for the help.

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  • [SOLVED] javascript insertBefore() Method

    - by Robert
    I'm trying to insert a TH as the first column. But so far always put it at the end of all columns. Any help will be appreciate it. Thanks var someNode = document.createElement("th"); someNode.innerHTML = "Hello"; var sp = document.getElementById("table").getElementsByTagName("thead")[0].getElementsByTagName("tr")[0]; var ref = document.getElementById("table").getElementsByTagName("thead")[0].getElementsByTagName("tr")[0].getElementsByTagName("th")[0]; sp.insertBefore(someNode,ref);

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