4.demo.html 973 B

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <meta charset="UTF-8">
  5. <meta name="viewport" content="width=device-width, initial-scale=1.0">
  6. <title>Document</title>
  7. </head>
  8. <body>
  9. <div>
  10. 时间:
  11. <span></span>
  12. <span></span>
  13. <span></span>
  14. <div id="box">
  15. <!-- 今天<span>天气真好</span> -->
  16. </div>
  17. </div>
  18. <script>
  19. var spans = document.querySelectorAll("span");
  20. spans[0].innerText = '你好'
  21. spans[1].innerText = 'aaa'
  22. spans[2].innerHTML = 'ccc'
  23. console.log(spans)
  24. // innerText 只操作文本 会忽略html标签
  25. // innerHTML 操作html标签 并渲染
  26. var box = document.getElementById("box");
  27. console.log(box);
  28. // console.log(box.innerText)
  29. // console.log(box.innerHTML)
  30. // box.innerText = '<h1>你好</h1>'
  31. box.innerHTML = '<h1 style="color:red">你好</h1>'
  32. </script>
  33. </body>
  34. </html>