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How to Determine which function is running

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Feb 10.2010

Hello,

I have a page with a number of iframes and a couple thousand lines of javascript (which I won’t ask you to troubleshoot — everything works fine).

The situation is that the cursor is flickering as though there’s a javascript function continuously looping–which may be affecting performance.

The question: Is it possible (and how) to determine which function is running? Where might I be able to find a log of the functions which have already ran?

I suspect firebug or IE developer tools should have something like this but I cannot find any supporting documentation. Any ideas?

Thanks,
Josh

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JavaScript

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@letmehaveagoFeb 10.2010 — firebug, ie developer tools and chrome's inspect element all have some way to show the call stack.

In chrome,

  • 1. right click and select inspect element

  • 2. click the "Scripts" tab

  • 3. on the left side line number bar, left click to add a break point

  • 4. refresh the page and it will stop on the break point

  • 5. on the right hand side, click call stack to make it slide down


    • pretty much the same with the other tools too.
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