W3School TIY Editor
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暗黑模式
运行代码
<!DOCTYPE html> <html> <body> <form> <input type="button" id="btn01" value="确定"> </form> <p>单击“禁用”按钮以禁用“确定”按钮：</p> <button onclick="disableElement()">禁用</button> <script> function disableElement() { document.getElementById("btn01").disabled = true; } </script> </body> </html>