mamie

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;
}

var arr = [1,2,3,3,4,6,8,0,10];
arr = shuffle(arr);
console.log(arr);

HTPP2 是二进制的协议(binary) , HTTP1.1 是文本协议， 二进制协议传输过程中数据包会更小,解析不会出错。