On 9/17/15 8:26 PM, Shu-yu Guo wrote:
​The first call to f() does not throw.

It actually does, because the bareword lookup for "x" fails. You get "ReferenceError: x is not defined".

If you replaced "x" with "window.x" or "self.x" or "this.x" or something I think you'd get the behavior you describe.

-Boris
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