I'm profiling javascript application using Chrome dev tools.  I see that the only memory area that grows is System objects total.  I wonder how could I understand what causes such behavior as there are no details in the tool showing which system...

If I add a value to the 1000th element of a Javascript array, then is there any difference to adding that value to the 0th element assuming those positions are open?  I'm speaking in terms of memory consumption.   Example:  arr[1000] = 'asdf&...

I've been playing around with Typed Arrays in JavaScript.  var buffer = new ArrayBuffer(16); var int32View = new Int32Array(buffer);   I imagine normal arrays ([1, 257, true]) in JavaScript have poor performance because their values could be of a...

i know most of you will point me to the chrome profiler heap snapshot, but on empty page (no js no css just html>body) it shows 8mb heap size and 12 to 30 thousand objects depends on his mood, so it is totally useless tool for this task, and i thi...

I am using the Javascript Module Pattern to try and implement C# enumeration-like functionality. I have two ways that I am currently thinking about implementing this functionality but I do not understand all the benefits or advantages of one way vers...

I noticed something odd in the Memory inspector of both Chrome and Firefox. On a large page, it will tell you how much various JavaScript objects take up, but doesn't seem to list any image/multimedia objects. In fact, in this screenshot taking f...

I have the following code to implement Observable Memory Store  var inventory = [     {name:"shoes", quantity:10, category:"sales"},     {name:"clothes", quantity:5, category:"sales"},     {name:"hats", quantit...

I am looping over a response that I got from an ajax response, the response is an array containing 1000 objects , this response is used to created an html table with 1000 rows :  1st scenario :      for (var i in msg.myObjects) {     $('#mytableb...

What are the differences in performance and memory footprint , if any, in these different approaches:  1. Using Src  <script type='text/javascript" src="1MBOfjavascript.js"></script>    2. Directly injecting in the Head...

I tried creating an Ember object using  c = Em.Object.create();   and checked the memory dump to see this    It suggests a shallow memory of 24 and retained memory of 524. My Question is, is this something to worry in terms of memory if I am keeping...