javascript/introduction-to-js-1/tasks/variables/variables3-download.html

<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="utf-8"/>
    <title>变量：任务3</title>
    <style>
      p {
        color: purple;
        margin: 0.5em 0;
      }

      * {
        box-sizing: border-box;
      }
    </style>
    <link rel="stylesheet" href="../styles.css" />
  </head>

  <body>

    <section class="preview">


    </section>

  </body>
  <script>
    // 在下方编写代码

    const myName = 'Default';
    myName = '李雷'

    let myAge = '18';

    // 不要编写此行以下的代码！

    const section = document.querySelector('section');

    let para1 = document.createElement('p');
    let para2 = document.createElement('p');
    para1.textContent = myName;
    para2.textContent = `20年后我 ${myAge + 20} 岁。`;
    section.appendChild(para1);
    section.appendChild(para2);
  </script>

</html>