front-end-77
/
22-面试题数组和伪数组.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta
      name="viewport"
      content="width=device-width, initial-scale=1.0,maximum-scale=1,minimum-scale=1,user-scalable=no"
    />
    <title>22-面试题数组和伪数组.html</title>
    <style>
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }
    </style>
  </head>
  <body>
    <ul>
      <li>1</li>
      <li>2</li>
    </ul>

    <script>
      // 伪数组 dom  具有 forEach方法
      // const liList = document.querySelectorAll('li');

      // liList.length=0;
      // console.log(liList);

      const list=[1,23];
      list.length=0;
      console.log(list);
    </script>
  </body>
</html>