随机点名小程序 - 在线点名工具 - 常规

<div class='box'>
        <h1>随机点名小程序</h1>
      <div class='nbox'>
        <img src='appIcon.png'/>
        <h4 id='title'>名字:黄泽明</h4>
        <button id='button'>点击点名</button>
      </div>
    </div> 
    <script>
let intervalId;
var i = 0;
const op = ['陈绮涵','陈伟钦','罗宇涵','陈晓冰','魏嘉和','魏天宇','黄鸿博','胡墁熙','黄斯望','陈德聪','陈翠林','唐超','何浩铭','胡鑫','陈伟校','陈雅婷','陈琦鑫','黄佳津','颜秋婷','杨俊鑫','杨宗良','黄泽明','刘雅妮','刘珠绿','赵婷婷','罗曼娜','刘家希','曾诗诗','邱怡岚','邱杰祥','何锦欣','黎栩灿','罗越凯','黄钰璇','邱嘉琳','朱雅欣','吴圳恒'];
      button.onclick=function (){
      var star = Math.floor(Math.random() * op.length);
     qdqd(); setTimeout(function(){clearInterval(intervalId);$("#title").text("名字:" + op[star]);},5000);
<pre><code>  }
function qdqd(){
    intervalId = setInterval(() =&gt; {
</code></pre>
<p>i++;            $(&quot;#title&quot;).text(&quot;名字:&quot; + op[i])
},20);
i = 0;};
</script></p>