validate is integer javascript code example
Example 1: javascript is number an integer
Number.isInteger(value)
Example 2: javascript check if number
function isNumber(n) { return /^-?[\d.]+(?:e-?\d+)?$/.test(n); }
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isNumber('123');
isNumber('123abc');
isNumber(5);
isNumber('q345');
isNumber(null);
isNumber(undefined);
isNumber(false);
isNumber(' ');
Example 3: javascript check if a value is an int
Number.isInteger(2);
Number.isInteger(90);
Number.isInteger("37");
Number.isInteger(false);