I want to know the size occupied by a JavaScript object.  Take the following function:  function Marks(){   this.maxMarks = 100; }  function Student(){   this.firstName = "firstName";   this.lastName = "lastName";   this.marks = new...
Is there a way to find out how much memory is being used by a web page, or by my jquery application?   Here's my situation:  I'm building a data heavy webapp using a jquery frontend and a restful backend that serves data in JSON.  The page...
Is there a tool/plugin/function for Firefox that'll dump out a memory usage of Javascript objects that you create in a page/script? I know about Firebug's profiler but I'd like something more than just times. Something akin to what Your...
I've been trying to use a canvas to edit video by drawing to a offscreen canvas and then using getImageData to do some work and then putting that onto my onscreen canvas. It works, but even with a small 480x360 video, Chrome memory usage keeps in...
Snippet 1:    var a; // undefined variable named 'a' function a(foo) { // a function named 'a'   var foo = "Hello World";   console.log(foo); } console.log(a); // output is: [Function: a], but why not undefined?     Snippet 2:...
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...
A closure:  function test() {   var count = 0;    return function() {     count++;   }; }   As we all know, the count won't release after test() be called, and now if the closure is useless to me, how could I release memory of it?...
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...

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