Comments on: Backbone.js And JavaScript Garbage Collection

By: rdamborsky

rdamborsky — Sat, 30 Mar 2013 10:54:00 +0000

For anyone interested: Heap Profiling in Google Dev Tools: https://developers.google.com/chrome-developer-tools/docs/heap-profiling

By: Jason

Jason — Tue, 08 May 2012 21:33:00 +0000

If this were expanded, do you think it could be of use?
https://github.com/jstrimpel/emem

By: rob8YC

rob8YC — Sat, 21 Apr 2012 18:43:00 +0000

I’ve seen that delete mistake a couple of places recently… here’s a very thorough article that also explains why the firebug console has a misleading quirk on the issue.
http://perfectionkills.com/understanding-delete/

By: Anonymous

Anonymous — Tue, 27 Mar 2012 01:14:00 +0000

Oh my, this is exactly what I wanted and never knew existed.

By: Derick Bailey

Derick Bailey — Thu, 22 Mar 2012 14:54:00 +0000

I’m not sure I can directly answer your question, but I ran across this article today and though it might be useful: http://gent.ilcore.com/2011/08/finding-memory-leaks.html

By: Derick Bailey

Derick Bailey — Wed, 21 Mar 2012 14:44:00 +0000

right – i always forget about that, for some reason. a “var” will fall out of scope, though, and be cleaned up, when the function exits (assuming no closures on the var).

there was an article I read a while back that talked about “delete” great detail, but i can’t seem to find it anymore.

By: Misha Reyzlin

Misha Reyzlin — Wed, 21 Mar 2012 14:40:00 +0000

I think it is worth mentioning that “you can force a variable to be de-referenced and allow the thing it points to be cleaned up by using the delete keyword in JavaScript: `delete myVar`” will not work with variables declared with `var`. As `delete` works with properties of objects (and in case of non `var` declaration the declared variable is actually a part of global object [`window` in browsers]).

By: Anonymous

Anonymous — Mon, 19 Mar 2012 14:13:00 +0000

Is there an easy way in something like Chrome’s web inspector to check if a particular object has been properly cleaned up? I’m thinking something like:

- navigate to a view plus model in my backbone app
- open the web inspector and look at the view and model somewhere
- navigate to a different view
- use the web inspector to check the old view and model have been GC’d

Being able to do that would really help me understand/play with GC to get my head around it better.

By: Dom Barker

Dom Barker — Mon, 19 Mar 2012 13:41:00 +0000

JMVC does some really neat things for handling memory leaks