JS从数组中随机取出几个数组元素的方法

var items = ['1','2','4','5','6','7','8','9','10'];

var item = items[Math.floor(Math.random()*items.length)];

function getRandomArrayElements(arr, count) {var shuffled = arr.slice(0), i = arr.length, min = i - count, temp, index;while (i-- > min) {index = Math.floor((i + 1) * Math.random());temp = shuffled[index];shuffled[index] = shuffled[i];shuffled[i] = temp;}return shuffled.slice(min);}var items = ['1','2','4','5','6','7','8','9','10'];console.log( getRandomArrayElements(items, 4) );