機機亂數

gistfile1.js

//Method 1
var ary1 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
Array.prototype.shuffle = function() {
  var i = this.length,
    j, tempi, tempj;
  if(i == 0) return false;
  while(--i) {
    j = Math.floor(Math.random() * (i + 1));
    tempi = this[i];
    tempj = this[j];
    this[i] = tempj;
    this[j] = tempi;
  }
  return this;
}
ary1.shuffle();
console.log(ary1);

//Method 2
var ary2 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
ary2.sort(function() {
  return 0.5 - Math.random();
});
console.log(ary2);

//Method 3
Array.prototype.random = function() {
  this.sort(function() {
		return 0.5 - Math.random();
	});
}
var ary3 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
ary3.random();
console.log(ary3);