<!DOCTYPE html> <html> <body> <h1>HTML DOM Attributes</h1> <h2>removedNamedItem() 方法</h2> <input id="myInput" type="button" value="OK"> <p>点击下面的按钮可去掉上面的输入元素的 type 属性。</p> <button onclick="myFunction()">试一试</button> <script> function myFunction() { const nodeMap = document.getElementById("myInput").attributes; nodeMap.removeNamedItem("type"); } </script> </body> </html>