Comments on: Internet Explorer: Global Variables, and Stack Overflows

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By: 800 calorie diet

800 calorie diet — Tue, 13 Jul 2010 07:35:26 +0000

Golden. Great, useful info.

By: Dave Doolin

Dave Doolin — Wed, 10 Mar 2010 23:45:42 +0000

Shoot this over to Crockford at jslint. It's important!

By: Joe

Joe — Sat, 06 Mar 2010 22:09:51 +0000

I discovered another IE6 defect with the same cause yesterday – see
http://zebracorner.blogspot.com/2010/03/yesterd...

By: Joe

Joe — Sat, 06 Mar 2010 22:08:33 +0000

I stumbled across a different problem with IE6 but with the same cause, which I have written up at http://zebracorner.blogspot.com/2010/03/yesterd...

By: jdalton

jdalton — Fri, 05 Mar 2010 12:41:22 +0000

shouldn't `eval(export +" = global[""+export+""];");` be `eval(export +" = exports['"+export+"'];");`

By: kangax

kangax — Fri, 05 Mar 2010 05:57:03 +0000

It's sad that resolution of this problem involves undeclared assignments — something that's been considered a bad practice for years.

FWIW, ES5-strict throws ReferenceError in cases like that (to be more precise, when LHS operand evaluates to unresolvable reference). This means that “exports” snippet you presented is not “ES5-strict”-compliant, naturally.

Another problem is MSHTML DOM, and the way it throws error when identifier on LHS of undeclared assignment is same as _name_ or _id_ of one of the elements in a document. You can see an example of it in my blog (http://perfectionkills.com/onloadfunction-consi...).

This last issue is probably more important (and likely to occur) than any other one.

By: kangax

kangax — Fri, 05 Mar 2010 05:55:50 +0000

[removed]

By: deadlyicon

deadlyicon — Thu, 04 Mar 2010 04:18:43 +0000

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By: boucher

boucher — Thu, 04 Mar 2010 04:15:09 +0000

Yeah, that's more accurate. It was kind of pseudo code already. I've made the change, thanks.