Created
August 2, 2012 07:32
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Examine the code snippet below, without evaluating it. What would you expect to be consoled?
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| MyApp = 42; | |
| (function() { | |
| if (typeof MyApp === 'undefined') { | |
| var MyApp = { oops: true }; | |
| } | |
| console.log(MyApp); | |
| }()); |
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[Object]
Since the inner var declaration masks the global MyApp.
The declaration of var MyApp in the function happens before the If-statement, and there for is undefined.