JavaScript Guy

I am having problems with code written in ASP.NET with some javascript, doing a postback to the ser… Read more How To Handle Javascript On Page With Thousands Of Checkboxes In Ie6

Since Javascript performance can possibly get intensive on large input forms, what is the cleanest … Read more Fastest (javascript/jquery) Way To Track Changes In A Large Input Form

I tried Dart SDK after the 1.0 release, and wrote a simple hello-world program in Dart. Then, with … Read more Why The Converttofastobject Function Make It Fast?

I was reading about runtime complexities of array operations and learned that... the ECMAScript sp… Read more Performance Of Array.push Vs Array.unshift

For a game in webgl where fps performance is important, what is the most efficient way to make a 2D… Read more Recommended Way To Make A 2d Hud In Webgl

I am using Nightmare.js to print pdf's. I send a request to the node server and build the page… Read more Reuse Electron Session With Nightmare

I quite often have optional arguments in functions, but some testing is showing a huge performance … Read more Performance Penalty For Undefined Arguments

Here's the fiddle: http://jsfiddle.net/D5h7H/7/ It renders the following: {{group.Name}} Soluti… Read more Angularjs Really Slow At Rendering With About 2000 Elements?

Say we have an object something like: var foo = { a: { b: { c: { d: { e: { f: [ 0, 1, 2, 3, 4, 5, 6… Read more Is It Better To Use Temporary Variables In Place Of Repeated Full References?

I often see this in code: var me = this;. Why is that? Is there some performance gain if I referenc… Read more Should I Reference 'this' In Local Variable?

I'm making a simple game in Javascript, in which when an object collides with a wall, it plays … Read more Is Playing Sound In Javascript Performance Heavy?

var name = function(n) { var digits = ['one','two','three','four… Read more Javascript Performance With Closure

I have the choice between types of comparison operations, please put them in the order of efficienc… Read more What Comparison Operators Are More Processor Efficient: <, <=, != Or ==?

http://jsperf.com/testing-foreach-vs-for-loop It was my understanding that Test Case 2 should run m… Read more Array.foreach Running Faster Than Native Iteration? How?

I've put together a jsperf test that compares for loops that iterate over an array with caching… Read more Javascript For-loop Condition Caching

I'm working on a long scrolling website that features a number of full background hi res images… Read more How To Load Images Sequentially?

I use a big picture(33440 x 440) and transform the big image, then achieve a animation like as fram… Read more Why Hardware-accelerated Css Animation Cost Too Much "composite Layer" Times In Main Thread?

I'm currently debugging a ajax chat that just endlessly fills the page with DOM-elements. If yo… Read more Javascript Performance Problems With Too Many Dom Nodes?

I need to measure the performance overhead of additional Javascript event bindings (using jQuery li… Read more Measure Cpu Load Of Javascript Applications

I have encountered a question where I need to allow default args to be set on a function in JavaScr… Read more How To Call This Default Args Function More Than Once?