Double equals vs Triple equals Operators in JavaScript

 

Double equals vs Triple equals Operators in JavaScript

 

 

Related Queries.
1)Difference between == and === in JavaScript
2)double equal vs triple equal operators in JavaScript

JavaScript has both strict and type-converting equality comparison Operators.

As we know == (double equal) is a Type Converted Equality Operator it convert data type accordingly.

Example:-  

0 == false        // true

1 == true         // true

1 == "1"          // true, auto type coercion 

null == undefined // true, auto type coercion    

While === (triple equal) is Strict Equality Operator, triple equal operator strictly check the data type for matching the value.

Example:-

0 === false        // false, because they are of a different type

1 === true         // false, because they are of a different type

1 === "1"          // false, because they are of a different type

1 === 1            // true,  because they are of a similar type

null == undefined  // false, because they are of a different type