注册事件

 

 

 

 

 

 

  <body>
    <button>注册事件</button>
  </body>
  <script>
    let arr = "asdfdgd";
    let aar = 0;
    for (let i = 0; i < arr.length; i++) {
      aar += arr[i];
    }
    console.log(aar);
  </script>

 

posted @ 2022-04-18 11:29  罗砂  阅读(28)  评论(0)    收藏  举报