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Which equals operator (== vs ===) should be used in JavaScript?
Double equals (==) is abstract equality comparison operator, which transforms the operands to the same type before making the comparison.
For example,
5 == 5 //true '5' == 5 //true 5 == '5' //true 0 == false //true
Triple equals (===) are strict equality comparison operator, which returns false for different types and different content.
For example,
5 === 5 // true
5 === '5' // false
var v1 = {'value':'key'};
var v2 = {'value': 'key'};
v1 === v2 //false
Updated on 07-Jan-2020 10:59:49
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