Javascript get random number in a specific range #vanillajs

random.js

//NOTE: Math.random() returns a floating point number from 0 up to but not including 1. 

//1. inclusive at the minimum, exclusive at the maximum
var max = 10;
var min = 1;
var result = Math.floor(Math.random() * (max - min)) + min; //The maximum is exclusive and the minimum is inclusive

/** helper function version **/
function getRandomInt(min, max) {
  min = Math.ceil(min);
  max = Math.floor(max);
  return Math.floor(Math.random() * (max - min)) + min; //The maximum is exclusive and the minimum is inclusive
}

//example: 
//Math random result is .01, then... Math.floor(.01 * (10 - 1)) + 1 = 1 //min is 1(inclusive)
// Math random result is .99, then... Math.floor(.99 * (10 - 1)) + 1  = 9 //not 10, max is exclusive

//2.  inclusive at both the minimum and the maximum

var max = 10;
var min = 1;
var result = Math.floor(Math.random() * (max - min + 1)) + min; //The maximum is inclusive and the minimum is inclusive 


/*helper function version*/
function getRandomIntInclusive(min, max) {
  min = Math.ceil(min);
  max = Math.floor(max);
  return Math.floor(Math.random() * (max - min + 1)) + min; //The maximum is inclusive and the minimum is inclusive 
}

//example: 
//Math random result is .01,  then... Math.floor(.01 * (10(max) - 1(min) + 1)) + 1(min) = 1  //min is 1(inclusive)
// Math random result is .99, then... Math.floor(.99 * (10(max) - 1(min) + 1)) + 1(min) = 10 //max is 10(inclusive)

//src: MDN: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/random