how to get a random whole number from one to x in javascript code example

Example 1: javascript get random number in range

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

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

Example 2: javascript random number between 0 and 10

Math.floor(Math.random() * 10);