javascript get random number between 0 and 3 code example

Example 1: javascript random number between 1 and 10

// Genereates a number between 0 to 1;
Math.random();

// to gerate a randome rounded number between 1 to 10;
var theRandomNumber = Math.floor(Math.random() * 10) + 1;

Example 2: random js

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

Example 3: nombre random js

// On renvoie un nombre aléatoire entre une valeur min (incluse) 
// et une valeur max (exclue)
function getRandomArbitrary(min, max) {
  return Math.random() * (max - min) + min;
}

Example 4: javascript random number 1 or -1

//an equation that returns either 1 or -1
var number = ((Math.floor(Math.random() * 2) - 2) * 2) + 1