All integers which can be represented as an IEEE-754 double-precision number are considered safe integers.
JavaScript Number.isSafeInteger() is used to check whether the given number is a safe integer or not.
Syntax:
Number.isSafeInteger(number)
Parameters
number: It represents the number on which safe integer checks have to be informed.
Returns
It returns true if the specified number is a safe integer otherwise returns false.
Example:
<!DOCTYPE html> <html> <body> <script> function testThreadSafe() { var result = ""; result = result + Number.isSafeInteger(453) + ": 453<br>"; result = result + Number.isSafeInteger(-453) + ": -453<br>"; result = result + Number.isSafeInteger(53-21) + ": 53-21<br>"; result = result + Number.isSafeInteger('456') + ": '456'<br>"; result = result + Number.isSafeInteger(false) + ": false<br>"; result = result + Number.isSafeInteger(Infinity) + ": Infinity<br>"; document.writeln(result); } testThreadSafe(); </script> </body> </html>