random number in js

function getRandomNumberBetween(min,max){
    return Math.floor(Math.random()*(max-min+1)+min);
}

//usage example: getRandomNumberBetween(20,400); 

var random;
var max = 8
function findRandom() {
  random = Math.floor(Math.random() * max) //Finds number between 0 - max
  console.log(random)
}
findRandom()

Math.floor(Math.random() * 100);     // returns a 
  random integer from 0 to 99
 

Math.floor(Math.random() * 5)   // print 0 to 5 && 5 not included

# it will give whole random number upto 5.
# you can add your lastIndex at place of (5).
# Math.floor() function returns the largest integer less than or equal to a given number.

Math.floor(Math.random() * 10);     // returns a random 
  integer from 0 to 9
 

function getRandomArbitrary(min, max) {
  return Math.random() * (max - min) + min;
}

var randomNo = Math.floor(Math.rand() * 10000000001);
console.log(randomNo);

//This will generate random number

Math.random() returns a random number in [0,1)

function getTotal(){
    var total=0;
    for(let t=0; t<array.length; t++){
        total+= array[t].randomNum;