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Equality.

The Equality operator (==) checks whether its two Operands are equal,returning a Boolean result. Unlike the Strict equality operator, it attemnpts to convert and compare operands that are of different types.

Equality Provides 3 types of comparison they are :-

  1. (==) Loose Equality.
  2. (===) Strict Equality.
  3. Object.is()

Loose Equality (==)

Double equals (==) will perform a type of conversion when comparing two things and will handle NAN, -0, and +0 specially to conform to IEE 754(so NaN!=NaN, and -0 == +0 );.

Strict Equality. (===)

Triple equals (===) will do the same comparsion as double equals (including the special handling for NaN, -0, and +0) but without type conversion; if the types differ, false is returned.

Object.is()

Object.is() does no type conversion and no special handling for NaN, -0, and +0 (giving it the same behavior as === except on those special numeric values).

  • For Example.
console.log(11 == '11');
// true. it's check only the values not types.
console.log(11 === '11');
// false. it's also check data types along values.

(==) Allows Coerciion when the data type are different.

(==) Comapres Only Primitives. Whenever we use it with non primitive it's turn into a primitive.

(===) disallows Coercion if the data tpes are same.

For More Information Click Below:-

Equality