<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<style type="text/css">
#_body
{
}
</style>
<script src="Scripts/jquery-1.4.1-vsdoc.js" type="text/javascript"></script>
<script type="text/javascript">
var json = {
"河北省": ["石家庄", "邯郸", "保定"],
"河南省": ["郑州", "洛阳", "安阳"],
"山东省": ["济南", "青岛", "德州"]
}
$(function () {
loadPro(json);
})
function loadPro(json) {
var $select = $("#province");
for (var key in json) {
var $option = $("<option>" + key + "</option>")
$select.append($option);
}
}
function loadcity() {
//1.获取当前选择的值，2，遍历3，添加
var $pro = $("#province");
var $city = $("#city");
var key_v = $pro.val();
var citys = json[key_v];
var city = $city.get(0);
city.innerHTML = "";
for (var i = 0; i < citys.length; i++) {
var $option = $("<option>" + citys[i] + "</option>")
$city.append($option);
}
}
</script>
</head>
<body id="_body">
<select id="province" onchange="loadcity()">
</select>
<br />
<select id="city">
</select>
</body>
</html>