JavaScript isSafeInteger() method

　JavaScript Number Object

isSafeInteger()Method to determine whether the provided value is a safe integer.

A safe integer can be represented precisely as an IEEE-754The integer part of the double-precision number, its IEEE-754The representation cannot be rounded to any other integer to comply with IEEE-754The result represented.

If the type of the value is Number and it is a safe integer, this method returns true. Otherwise, it returns false.

Syntax:

Number.isSafeInteger(value)

Number.isSafeInteger(3);　　　//　true
Number.isSafeInteger(NaN);　//　false
Number.isSafeInteger(Infinity);//　false
Number.isSafeInteger('3');　//　false
Number.isSafeInteger(3.1);　//　false
Number.isSafeInteger(3.0);　//　true

Browser Compatibility

The numbers in the table specify the first browser version that fully supports the isSafeInteger() method:

Parameter Value

Technical Details

　JavaScript Number Object