Created
June 11, 2010 05:50
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| var i = "initialized"; | |
| function test() { | |
| var i = 0; | |
| for (i in [1, 2, 3]) { console.log(i) }; | |
| } | |
| test(); | |
| console.log(i); |
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Line 4 narrows the scope of var i. If you remove that line, the global var i will be changed after test() is called.
It's a feature in ECMAScript to change global variable value in for..in loop like this according to its specification.