JavaScript Number.isInteger()

The syntax of the isInteger() method is:

Number.isInteger(value)

The isInteger() method is called using the Number class name.


Number.isInteger() Parameters

The isInteger() method takes in:

  • value - The value to be tested for being an integer.

Return value from Number.isInteger()

  • Returns a Boolean representing whether the given value is an integer.

Note: The isInteger() method returns false for NaN and Infinity.


Example: Using Number isInteger()

Output

true
true
true
false
false
false
false
false
false
false
false