CODEWITHSUNDEEP
javascriptfirefox
spoulson
spoulson

Reputation: 21601

How to avoid the Unresponsive Script popup in Firefox with long running Javascript?

I want to benchmark some Javascript code in the browser, but it may trigger Firefox's "Warning: Unresponsive script" popup. This allows the user to click "Stop script" in the event that the browser is caught in a runaway function. While the pop-up is displayed, the currently running function has been halted. This isn't ideal, so is there a way to run my benchmarks differently such that Firefox doesn't popup this warning and ruin my results?

Upvotes: 10

Views: 15327

Answers (5)

Lucky
Lucky

Reputation: 17365

The below code solved that problem for me...

<script type="text/javascript">
   function downloadJSAtOnload() {
   var element = document.createElement("script");
   element.src = "deferredfunctions.js";
   document.body.appendChild(element);
   }
   if (window.addEventListener)
   window.addEventListener("load", downloadJSAtOnload, false);
   else if (window.attachEvent)
   window.attachEvent("onload", downloadJSAtOnload);
   else window.onload = downloadJSAtOnload;
</script>

Upvotes: 0

zmila
zmila

Reputation: 1660

See in blog of Nicholas C. Zakas What determines that a script is long-running? (at 2009/01/05)

Speed up your JavaScript, Part 1 http://www.nczonline.net/blog/2009/01/13/speed-up-your-javascript-part-1/

there are the reasons and the ways how to avoid the dialog

Upvotes: 4

Diodeus - James MacFarlane
Diodeus - James MacFarlane

Reputation: 114437

You can use the script from this question to break processing long lists into smaller chunks:

How can I give control back (briefly) to the browser during intensive JavaScript processing?

Upvotes: 2

krb
krb

Reputation: 16345

You have to break up long actions into smaller ones and perform them in turns. This will also allow a better progress indication.

http://www.sonofsofaman.com/hobbies/code/settimeout.asp

Upvotes: 9

tloach
tloach

Reputation: 8040

In firefox's address bar type about:config

You want to change dom.max_script_run_time to be large enough for your scripts to run.

Upvotes: 12

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