If a DOM Element is removed, are its listeners removed from memory too?...

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...

I'm embedding a large array in <script> tags in my HTML, like this (nothing surprising):  <script>     var largeArray = [/* lots of stuff in here */]; </script>   In this particular example, the array has 210,000 elements. Tha...

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...

Curious about what was the maximum string length I could get in Javascript, I tested it myself, today, on my Firefox 43.0.1, running in Windows 7. I was able to construct a string with length 2^28 - 1, but when I tried to create a string with one mor...

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?...