基于 Layui form 组件的省市区级联的实现 ---
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<title>基于 Layui form 组件的省市区级联的实现</title>
<link rel="stylesheet" href="plugins/layui/css/layui.css" />
</head>
<body>
<div style="margin: 50px auto; ">
<form class="layui-form">
<div class="layui-form-item">
<label class="layui-form-label">选择地区</label>
<div class="layui-input-inline">
<select name="province" lay-filter="province">
<option value="">请选择省</option>
</select>
</div>
<div class="layui-input-inline" style="display: none;">
<select name="city" lay-filter="city">
<option value="">请选择市</option>
</select>
</div>
<div class="layui-input-inline" style="display: none;">
<select name="area" lay-filter="area">
<option value="">请选择县/区</option>
</select>
</div>
</div>
</form>
</div>
<script type="text/javascript" src="plugins/layui/layui.js"></script>
<script type="text/javascript" src="js/area.js"></script>
<script>
//初始数据
var areaData = Area;
var $form;
var form;
var $;
layui.use(['jquery', 'form'], function() {
$ = layui.jquery;
form = layui.form();
$form = $('form');
loadProvince();
});
//加载省数据
function loadProvince() {
var proHtml = '';
for (var i = 0; i < areaData.length; i++) {
proHtml += '<option value="' + areaData[i].provinceCode + '_' + areaData[i].mallCityList.length + '_' + i + '">' + areaData[i].provinceName + '</option>';
}
//初始化省数据
$form.find('select[name=province]').append(proHtml);
form.render();
form.on('select(province)', function(data) {
$form.find('select[name=area]').html('<option value="">请选择县/区</option>').parent().hide();
var value = data.value;
var d = value.split('_');
var code = d[0];
var count = d[1];
var index = d[2];
if (count > 0) {
loadCity(areaData[index].mallCityList);
} else {
$form.find('select[name=city]').parent().hide();
}
});
}
//加载市数据
function loadCity(citys) {
var cityHtml = '';
for (var i = 0; i < citys.length; i++) {
cityHtml += '<option value="' + citys[i].cityCode + '_' + citys[i].mallAreaList.length + '_' + i + '">' + citys[i].cityName + '</option>';
}
$form.find('select[name=city]').html(cityHtml).parent().show();
form.render();
form.on('select(city)', function(data) {
var value = data.value;
var d = value.split('_');
var code = d[0];
var count = d[1];
var index = d[2];
if (count > 0) {
loadArea(citys[index].mallAreaList);
} else {
$form.find('select[name=area]').parent().hide();
}
});
}
//加载县/区数据
function loadArea(areas) {
var areaHtml = '';
for (var i = 0; i < areas.length; i++) {
areaHtml += '<option value="' + areas[i].areaCode + '">' + areas[i].areaName + '</option>';
}
$form.find('select[name=area]').html(areaHtml).parent().show();
form.render();
form.on('select(area)', function(data) {
//console.log(data);
});
}
</script>
</body>
</html>参考demo：http://www.zhengjinfan.cn/picker.html
