今天做了一个下拉框的友情连接，跟select操作有点不一样，记录下，代码如下：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>测试</title>
<link type="text/css" rel="stylesheet" href="http://static.xitongcheng.cc/css/sty.css">
<script type="text/javascript" src="jquery.min.js"></script>
</head>
<body>
<select class="form_select" name="view_dropdownlist_55_843">
<option selected>苏老的学习笔记</option>
<option value="https://sulao.cn/category-1.html">php笔记</option>
<option value="https://sulao.cn/category-2.html">mysql笔记</option>
<option value="https://sulao.cn/category-3.html">mssql笔记</option>
<option value="https://sulao.cn/category-4.html">linux笔记</option>
</select>
<script type="text/javascript">
$(function(){
$(".form_select").click(function(){
var index = $(".form_select").get(0).selectedIndex; //获取索引
var jumpurl = $(".form_select").find("option:selected").val();
if(index != 0 && jumpurl){
window.open(jumpurl);
$(".form_select option").attr("selected",false);
}
});
});
</script>
</body>
</html>