elevate if a value is between javascript code example

Example 1: exponent in javascript

let number = 2;
let exponent = 3;

//using the exponent operator
console.log( number ** exponent);
// using the Math library 
console.log( Math.pow(number, exponent);
// these will both output 8

Example 2: javascript number between values

Number.prototype.between = function(a, b) {
  var min = Math.min.apply(Math, [a, b]),
    max = Math.max.apply(Math, [a, b]);
  return this > min && this < max;
};

var windowSize = 550;

console.log(windowSize.between(500, 600));