Javascript怎样随机打乱数组
function shuffle(array) {
var currentIndex = array.length, temporaryValue, randomIndex ;// While there remain elements to shuffle...
while (0 !== currentIndex) {// Pick a remaining element...
randomIndex = Math.floor(Math.random() * currentIndex);
currentIndex -= 1;// And swap it with the current element.
temporaryValue = array[currentIndex];
array[currentIndex] = array[randomIndex];
array[randomIndex] = temporaryValue;
}return array;
}