<!DOCTYPE html><html><body>Search: <input type="search" id="mySearch" name="googlesearch"><p>点击按钮显示或修改搜索字段 name 属性的值。</p><button onclick="display()">显示名称</button><button onclick="change()">修改名称</button><script>function display() {var x = document.getElementById("mySearch").name;alert("搜索字段名称为: " + x);}function change() {var x = document.getElementById("mySearch").name = "newSearchName";alert ("名称修改为: " + x);}</script></body></html>