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[JavaScript] JavaScript显示表单内元素的数量 →→→→→进入此内容的聊天室

来自 , 2021-01-11, 写在 JavaScript, 查看 97 次.
URL http://www.code666.cn/view/8e77b376
  1. <!DOCTYPE html>
  2. <html>
  3. <body>
  4.  
  5. <form id="frm1" action="form_action.asp">
  6. First name: <input type="text" name="fname" value="Donald"><br>
  7. Last name: <input type="text" name="lname" value="Duck"><br>
  8. <input type="submit" value="Submit">
  9. </form>
  10.  
  11. <p>The number of elements in "frm1" are:
  12. <script>
  13. document.write(document.getElementById("frm1").length);
  14. </script>
  15. </p>
  16.  
  17. </body>
  18. </html>
  19.  
  20.  
  21. //javascript/7933

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