W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
运行代码
<!DOCTYPE html> <html> <body> 电子邮件：<input type="email" id="myEmail"><br><br> <button onclick="disableBtn()">禁用电子邮件字段</button> <button onclick="undisableBtn()">取消禁用电子邮件字段</button> <script> function disableBtn() { document.getElementById("myEmail").disabled = true; } function undisableBtn() { document.getElementById("myEmail").disabled = false; } </script> </body> </html>