number square in javascript code example

Example 1: how to square a value in javascript

// Use Math.pow(a,b); where a is your value and b is the exponent
var num = Math.pow(4, 2);
//num returns 16

Example 2: javascript detect square number

var isSquare = function (n) {
    return n > 0 && Math.sqrt(n) % 1 === 0;
};