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by evilpie 4370 days ago
No you can't. You can do something like function(undefined) {}, but the global 'undefined' is non-writable and non-configurable.
1 comments
ahoge 4370 days ago
That's an ES5 change. With ES3, you can overwrite NaN, Infinity, and undefined.
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LunaSea 4369 days ago
Only in strict mode I though no ?
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ahoge 4369 days ago
Generally. Technically, it's a "breaking change".

As you can imagine, this didn't actually affect anyone.

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