javascript random number between 0 and 10

1// Genereates a number between 0 to 1;
2Math.random();
3
4// to gerate a randome rounded number between 1 to 10;
5var theRandomNumber = Math.floor(Math.random() * 10) + 1;

1function getRandomNumberBetween(min,max){
2    return Math.floor(Math.random()*(max-min+1)+min);
3}
4
5//usage example: getRandomNumberBetween(20,400); 
6

1Math.floor(Math.random() * 10);

1Math.random() * 10 = 0-10

1//an equation that returns either 1 or -1
2var number = ((Math.floor(Math.random() * 2) - 2) * 2) + 3