JS如何从数组中随机取出若干个数，且不重复

Posted 2020-08-09

//原数组

var arr = [0,1,2,3,4,5,6,7,8,9,10,11];

//输出数组

var out = [];

//输出个数

var num = 5;

while(out.length < num){

    var temp = (Math.random()*arr.length) >> 0;

    out.push(arr.splice(temp,1));

}

alert(out);