1、实现源码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery判断select选中</title>
<script type="text/javascript" src="jquery-1.12.3.js"></script>
<script type="text/javascript">
$(function(){
$("#sel").change(function(){
var btn = $("#btn").val();
var sel = $("#sel").text();
if(btn==sel)
{
$("#sel").find("option[text='"+btn+"']").attr("selected",true);
alert(btn+"
"+sel);
}
});
});
</script>
</head>
<body>
<div id="div-select">
<select id="sel" style="200px;">
<option value="1">春季</option>
<option value="2">夏季</option>
<option value="3">秋季</option>
<option value="4">冬季</option>
</select><br/><br/>
<input type="text" id="btn" style="195px;" />
</div>
</body>
</html>
2、实现结果
