Difference between "==" and "===" in java script [duplicate]

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Possible Duplicate:开发者_高级运维

Javascript === vs == : Does it matter which “equal” operator I use?

Hi I am not clear why there are two == and === comparator operators in java script.

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The equality operator == coerces, or converts the data type temporarily to see if it's equal to the other operand whereas the identity operator === doesn't need to do any converting whatsoever since it directly compares them without conversion meaning it's stricter and faster.

2=='2'
true

2==='2'
false