What is the use of the Object.is() method in JavaScript ?

The Object.is() method in JavaScript serves the purpose of comparing two values for equality. It returns a boolean value indicating whether the two values are the same.

Syntax:

Object.is(value1, value2)

Parameter:

• value1: The first value to compare.
• value2: The second value to compare.

Example: Here,

• In the first example, Object.is(5, 5) returns true because both values are numerically equal.
• In the second example, Object.is(5, "5") returns false because the values are of different types (number and string).
• In the third example, Object.is(NaN, NaN) returns true because both values are NaN.
• In the fourth example, Object.is(+0, -0) returns false because the two zero values have different signs.

Javascript

console.log(Object.is(5, 5));
console.log(Object.is(5, "5"));
console.log(Object.is(NaN, NaN));
console.log(Object.is(+0, -0));

Output

true
false
true
false