1. 代码功能实现
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<!--
作者：[email protected]
时间：2020-09-17
描述：按钮1 显示金色
-->
<script type="text/javascript" src="js/jquery-3.3.1.min.js">
</script>
<script type="text/javascript">
function f() {
var b = document.getElementById("b");
$(b).css("background","gold");
$("#b").css("background","aqua");
}
</script>
</head>
<body>
<button onclick="f()">按钮</button>
<button id="b">按钮变化</button>
</body>
</html>
效果展示
