Possible Duplicate:
Javascript === vs == : Does it matter which “equal” operator I use?
Are != and !== are respectively the same as == and ===?
Possible Duplicate: Javascript === vs == : Does it matter which “equal” operator I
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Possible Duplicate:
Javascript === vs == : Does it matter which “equal” operator I use?
Are != and !== are respectively the same as == and ===?
!==and===are strict comparison, and==/!=are loose comparison. It’s best to use strict comparison.