comparison in javascript
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JavaScript | ‘===’ vs ‘==’Comparison Operator
Difficulty Level : Expert
Last Updated : 25 Sep, 2019
In Javascript(ES6), there are four ways to test equality which are listed below:
Using ‘==’ operator
Using ‘===’ operator
SameValueZero: used mainly in sets, maps and arrays.
SameValue: used elsewhere
Now, our main concern is getting to know the difference between the ‘==’ and ‘===’ operators that the javascript provides, though they look similar, yet they are very different.
‘==’ operator: In Javascript, the ‘==’ operator is also known as loose equality operator which is mainly used to compare two value on both the sides and then return true or false. This operator checks equality only after converting both the values to a common type i.e type coercion.
Note: Type coercion means that the two values are compared only after attempting to convert them into the same type. Let’s look at all the value in which the ‘==’ operator will return true.
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