Where Is Browser Javascript Stored and Executed?

Question

When javascript is run in a browser

alert('Hello World');

What environment executes it and manages it in memory?

I know this is vaugue! But thats the best place to start!

Peter Bailey · Accepted Answer · 2009-06-03 18:56:34Z

4

The browser's javascript engine.

Here's a page that compares the performance of a bunch

answered Jun 3, 2009 at 18:56

Peter Bailey

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1 Comment

Aiden Bell Over a year ago

Link to an engine's c# bindings stackoverflow.com/questions/172753/…

Aiden Bell · Accepted Answer · 2009-06-03 19:36:44Z

3

This depends on the browser, The JavaScript engine, and what you mean by 'executes it'

There is not much of an answer to give.

Look at some JavaScript engine's architectures ...

http://www.mozilla.org/js/spidermonkey/

http://code.google.com/p/v8/

If you want to explore deeper, maybe read the first few chapters of the Dragon Book to learn a bit about how programs are interpreted and/or compiled to some intermediate or bytecode form.

Good Luck

edited Jun 3, 2009 at 19:36

answered Jun 3, 2009 at 18:56

Aiden Bell

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