vue 随机抽签

1.新建一个数组

roomArr: ["1", "2", "3", "4","5", "6", "7", "8","9", "10", "11", "12","13", "14", "15"],
number:'',

2.点击抽签，获取随机数，为了有随机的效果，使用了一个定时器

this.timer = setInterval(() => {
     
	this.number = this.roomArr[Math.floor(Math.random() * this.roomArr.length)];
},40)

3.点击暂停，清除定时器，在数组中剔除掉已经选出的数字

clearInterval(this.timer)  //清除定时器
console.log(this.number)   //这是随机抽取出的数字
this.roomArr = this.roomArr.filter(item => item != this.number)  //剔除已经选出的数字，返回新的数组