实现方式千差万别，满足自己需求的才是最好的。
插件版提供了两种方式：
distpicker版
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <link href="css/city.css" rel="external nofollow" rel="external nofollow" rel="stylesheet" type="text/css" /> <script src="js/jquery-2.2.0.min.js"></script> <script src="js/distpicker.data.js"></script> <script src="js/distpicker.js"></script> </head> <body> <h5>Demo:</h5> <form class="form-inline"> <div data-toggle="distpicker"> <div class="form-group"> <label class="sr-only" for="province1">Province</label> <select class="form-control" id="province1"></select> </div> <div class="form-group"> <label class="sr-only" for="city1">City</label> <select class="form-control" id="city1"></select> </div> <div class="form-group"> <label class="sr-only" for="district1">District</label> <select class="form-control" id="district1"></select> </div> </div> </form> </body> </html>
distpicker.data.js 、distpicker.js 下载地址
第二种插件版
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<link href="css/city.css" rel="external nofollow" rel="external nofollow" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/city.min.js"></script>
</head>
<body>
<div id="content-wrap">
<div id="content-left" class="demo">
<form action="" name="form1">
<div class="infolist">
<lable>所在地区：</lable>
<div class="liststyle">
<span id="Province">
<i>请选择省份</i>
<ul>
<li><a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" rel="external nofollow" alt="请选择省份">请选择省份</a></li>
</ul>
<input type="hidden" name="cho_Province" value="请选择省份">
</span>
<span id="City">
<i>请选择城市</i>
<ul>
<li><a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" rel="external nofollow" alt="请选择城市">请选择城市</a></li>
</ul>
<input type="hidden" name="cho_City" value="请选择城市">
</span>
<span id="Area">
<i>请选择地区</i>
<ul>
<li><a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" rel="external nofollow" alt="请选择地区">请选择地区</a></li>
</ul>
<input type="hidden" name="cho_Area" value="请选择地区">
</span>
</div>
</div>
</form>
</div>
<div id="content-right"></div>
</div>
</body>
</html>
相关js下载地址：链接: jqueryminjs
css下载地址：链接: css
无插件版：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<link rel="stylesheet" href="//cdn.bootcss.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="external nofollow" >
</head>
<body>
<p> </p>
<div class="row">
<div class="col-sm-12">
<div class="form-group">
<label class="control-label col-sm-2">所在区域</label>
<div class="col-sm-3">
<select name="input_province" id="input_province" class="form-control">
</select>
</div>
<div class="col-sm-3">
<select name="input_city" id="input_city" class="form-control">
</select>
</div>
<div class="col-sm-3">
<select name="input_area" id="input_area" class="form-control">
</select>
</div>
</div>
</div>
</div>
<p> </p>
<div class="row text-center">数据来源：
<a href="http://www.stats.gov.cn/tjsj/tjbz/xzqhdm/201504/t20150415_712722.html" target="_blank">http://www.stats.gov.cn/tjsj/tjbz/xzqhdm/201504/t20150415_712722.html</a>
</div>
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="js/pdata.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript">
$(function() {
var html = "<option value=''>== 请选择 ==</option>";
$("#input_city").append(html);
$("#input_area").append(html);
$.each(pdata, function(idx, item) {
if(parseInt(item.level) == 1) {
html += "<option value='" + item.name + "' exid='" + item.code + "'>" + item.name + "</option>";
}
});
$("#input_province").append(html);
$("#input_province").change(function() {
if($(this).val() == "") return;
$("#input_city option").remove();
$("#input_area option").remove();
var code = $(this).find("option:selected").attr("exid");
code = code.substring(0, 2);
var html = "<option value=''>== 请选择 ==</option>";
$("#input_area").append(html);
$.each(pdata, function(idx, item) {
if(parseInt(item.level) == 2 && code == item.code.substring(0, 2)) {
html += "<option value='" + item.name + "' exid='" + item.code + "'>" + item.name + "</option>";
}
});
$("#input_city").append(html);
});
$("#input_city").change(function() {
if($(this).val() == "") return;
$("#input_area option").remove();
var code = $(this).find("option:selected").attr("exid");
code = code.substring(0, 4);
var html = "<option value=''>== 请选择 ==</option>";
$.each(pdata, function(idx, item) {
if(parseInt(item.level) == 3 && code == item.code.substring(0, 4)) {
html += "<option value='" + item.name + "' exid='" + item.code + "'>" + item.name + "</option>";
}
});
$("#input_area").append(html);
});
//绑定
$("#input_province").val("山东省");
$("#input_province").change();
$("#input_city").val("潍坊市");
$("#input_city").change();
$("#input_area").val("诸城市");
});
</script>
</body>
</html>
pdata.js下载地址
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