JS+CSS实现随机点名(实例代码)

JavaScript 2019-12-11

<body>
  <div id="Box">随机点名</div>
  <span id="span">开始</span>
</body>

CSS代码结构

<style>
  #Box {
    width: 30%;
    height: 200px;
    background-color: rgb(233,248,214);
    border: 1px solid rgb(130,216,18);
    font-size: 40px;
    font-weight: 600;
    font-family: Arial,Helvetica,sans-serif;
    line-height: 200px;
    text-align: center;
    margin: 25px auto;
    border-radius: 10px;
  }
  span {
    display: block;
    width: 30%;
    height: 44px;
    line-height: 44px;
    background-color: rgb(6,158,64);
    border-radius: 10px;
    color: #fff;
    text-align: center;
    margin: 0 auto;
    font-size: 18px;
    font-family: 华文细黑;
  }
  span:hover {
    background-color: rgb(4,190,76);
  }
</style>

JS代码结构

<script>
  var arr = ["西施","马超","曜","云中君","瑶","猪八戒","嫦娥","伽罗","盾山","司马懿","孙策","元歌","米莱狄","狂铁","弈星","裴擒虎","杨玉环","公孙离","明世隐","女娲","梦奇","苏烈","百里玄策","百里守约","铠","鬼谷子","干将莫邪","东皇太一","大乔","黄忠","诸葛亮","哪吒","太乙真人","蔡文姬","雅典娜","杨戬","成吉思汗","钟馗","虞姬","李元芳","张飞","刘备","后羿","牛魔","孙悟空","亚瑟","橘右京","娜可露露","不知火舞","张良","花木兰","兰陵王","王昭君","韩信","刘邦","姜子牙","露娜","程咬金","安琪拉","貂蝉","关羽","老夫子","武则天","项羽","达摩","狄仁杰","马可波罗","李白","宫本武藏","典韦","曹操","甄姬","夏侯惇","周瑜","吕布","芈月","白起","扁鹊","孙膑","钟无艳","阿轲","高渐离","刘禅","庄周","鲁班七号","孙尚香","嬴政","妲己","墨子","赵云","小乔","廉颇"
  ]
  var Box = document.getElementById("Box");
  var span = document.getElementById("span");//获取元素
  var state = 0;//定义状态，开始和结束
  var t;
  span.onclick = function () {
    if (state == 0) {
      //如果是0即开始随机，变为1时结束，不是0时执行else
      clearInterval(t);
      t = setInterval(function () {
        // console.log(1);
        var sj = Math.round(Math.random() * (arr.length - 1));
        console.log(arr[sj]);
        Box.innerHTML = arr[sj];
      },3)
      span.innerHTML = "结束"//更改按钮的内容
      state=1;
    }else{
      state=0;
      clearInterval(t);
      span.innerHTML = "开始"
    }
  }
</script>

效果预览

JS+CSS实现随机点名(实例代码)