Checks if value is classified as a number primitive and is an integer.
value
number
The value to check.
Returns true if value is an integer, else false.
true
false
isNumber(123)// => trueisNumber(123.456)// => falseisNumber(Number.NaN)// => falseisNumber(Infinity)// => falseisNumber('123')// => false Copy
isNumber(123)// => trueisNumber(123.456)// => falseisNumber(Number.NaN)// => falseisNumber(Infinity)// => falseisNumber('123')// => false
Checks if
valueis classified as anumberprimitive and is an integer.