Comments on Meeting Notes

Luke Hoban lukeh at
Tue Dec 4 21:14:15 PST 2012

Brendan Eich wrote:
Hard to say what IE8's share will be, but IE9 did not implement strict mode IIRC. IE10 did.

Michał Z. Gołębiowski wrote:
IE10 sort of did. The following code:
(function(){ 'use strict'; return !this; })();
returns false in IE10. Who knows what other
deviations from the standard there are...

That code returns true in IE10 standards mode.  See for tests validating this and other ES5 implementation compatibility.  If you see things not covered there, open bugs suggesting new tests:


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