基于layui的select区域联动

要实现联动效果注意两点：

第一要可以监听到select的change事件；

第二异步加载的内容，需要重新渲染后才可以 正常使用。

Html结构：

<div class="x-body"><form class="layui-form" action="" method="post"><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" id="s_p"><option value="1">请选择省</option></select></div><div class="layui-input-inline"><select name="city" lay-filter="city" id="s_c"><option value="1">请选择市</option></select></div><div class="layui-input-inline"><select name="area" lay-filter="area" id="s_x"><option value="1">请选择区/县</option></select></div></div><div><label class="layui-form-label">选择地区</label><div class="layui-input-inline"><select name="towns" lay-filter="towns" id="s_t"><option value="1">请选择乡镇/街道</option></select></div><!--<div class="layui-input-inline">--><!--<select name="burg" lay-filter="burg" id="s_b">--><!--<option value="1">庄/村</option>--><!--</select>--><!--</div>--></div></form>
</div>

Js:

<script type="text/javascript">layui.use(['form', 'layer', 'laytpl', 'jquery'], function () {var form = layui.form, $ = layui.jquery;var parentId = '0';$(function () {$.post(serverPath + "sys/area/backProvince/" + parentId, function (result) {var p = result;for (v in p) {var pp = p[v].id;$("#s_p").append("<option value=" + pp + ">" + p[v].fullname + "</option>")}form.render();})form.on('select(province)', function (data) {var p = $("#s_p").val();if (p != "1") {$.post(serverPath + "sys/area/backProvince/" + p, function (result) {var c = result;$("#s_c").html("");$("#s_c").append("<option value='1'>请选择市</option>");$("#s_x").html("");$("#s_x").append("<option value='1'>请选择县/区</option>");$("#s_t").html("");$("#s_t").append("<option value='1'>请选择乡镇/街道</option>");$("#s_b").html("");$("#s_b").append("<option value='1'>请选择村/街道号</option>");for (v in c) {var cc = c[v].id;$("#s_c").append("<option value=" + cc + ">" + c[v].fullname + "</option>")}form.render();})}});form.on('select(city)', function (data) {var c = $("#s_c").val();if (c != "1") {$.post(serverPath + "sys/area/backProvince/" + c, function (result) {var x = result;$("#s_x").html("");$("#s_x").append("<option value='1'>请选择县/区</option>");$("#s_t").html("");$("#s_t").append("<option value='1'>请选择乡镇/街道</option>");$("#s_b").html("");$("#s_b").append("<option value='1'>请选择村/街道号</option>");for (v in x) {var xx = x[v].id;$("#s_x").append("<option value=" + xx + ">" + x[v].fullname + "</option>")}form.render();});}});form.on('select(area)', function (data) {var x = $("#s_x").val();if (x != "1") {$.post(serverPath + 'sys/area/backProvince/'+ x, function (result) {var t = result;$("#s_t").html("");$("#s_t").append("<option value='1'>请选择乡镇/街道</option>");$("#s_b").html("");$("#s_b").append("<option value='1'>请选择村/街道号</option>");for (v in t) {var xx = t[v].id;$("#s_t").append("<option value=" + xx + ">" + t[v].fullname + "</option>")}form.render();});}});});});</script>

总结：

1.select的chage监听事件使用

form.on('select(myselect)', function(data){}） 其中myselect是select的 lay-filter属性值

2.数据异步加载到select的option中之后，点击该select会发现layui的选中效果不起作用，需要使用form.render('select');重新渲染一次，就可以正常使用。