layui实现三级联动的方法：首先创建html的页面；然后创建【address.js】文件，内容为“Address.prototype.provinces = function(){...}”；最后通过layui模块实现三级联动即可。
本教程操作环境：windows10系统、layui2.5.6版，Dell G3电脑。
基于layui的三级联动模块html的页面代码如下：
<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta name="renderer" content="webkit"><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"><meta name="apple-mobile-web-app-status-bar-style" content="black"><meta name="apple-mobile-web-app-capable" content="yes"><meta name="format-detection" content="telephone=no"><link rel="stylesheet" href="https://zhishitu.com/ke" /></head><body><p class="layui-form"><p class="layui-input-inline"><select name="province" lay-filter="province" class="province"><option value="">请选择省</option></select></p><p class="layui-input-inline"><select name="city" lay-filter="city" disabled><option value="">请选择市</option></select></p><p class="layui-input-inline"><select name="area" lay-filter="area" disabled><option value="">请选择县/区</option></select></p></p></body><script type="text/javascript" src="../../../layui-v2.1.5/layui.js"></script><script type="text/javascript" src="address.js"></script><script type="text/javascript">layui.config({base : "../../../js/" //address.js的路径}).use([ 'layer', 'jquery', "address" ], function() {var layer = layui.layer, $ = layui.jquery, address = layui.address();});</script><html>address.js的代码入下：ps:需要注意的有：$.get("address.json", function (data) {} 的地址为json地址，地址不对会报异常。layui.define(["form","jquery"],function(exports){ var form = layui.form, $ = layui.jquery, Address = function(){}; Address.prototype.provinces = function() { //加载省数据 var proHtml = '',that = this; $.get("address.json", function (data) { for (var i = 0; i < data.length; i++) { proHtml += '<option value="' + data[i].code + '">' + data[i].name + '</option>'; } //初始化省数据 $("select[name=province]").append(proHtml); form.render(); form.on('select(province)', function (proData) { $("select[name=area]").html('<option value="">请选择县/区</option>'); var value = proData.value; if (value > 0) { that.citys(data[$(this).index() - 1].childs); } else { $("select[name=city]").attr("disabled", "disabled"); } }); }) } //加载市数据 Address.prototype.citys = function(citys) { var cityHtml = '<option value="">请选择市</option>',that = this; for (var i = 0; i < citys.length; i++) { cityHtml += '<option value="' + citys[i].code + '">' + citys[i].name + '</option>'; } $("select[name=city]").html(cityHtml).removeAttr("disabled"); form.render(); form.on('select(city)', function (cityData) { var value = cityData.value; if (value > 0) { that.areas(citys[$(this).index() - 1].childs); } else { $("select[name=area]").attr("disabled", "disabled"); } }); } //加载县/区数据 Address.prototype.areas = function(areas) { var areaHtml = '<option value="">请选择县/区</option>'; for (var i = 0; i < areas.length; i++) { areaHtml += '<option value="' + areas[i].code + '">' + areas[i].name + '</option>'; } $("select[name=area]").html(areaHtml).removeAttr("disabled"); form.render(); } var address = new Address(); exports("address",function(){ address.provinces(); });});address.json的下载地址如下：
一、下载地址https://qan.baidu.com/s/1bprUQSZ
二、下载地址https://download.csdn.net/download/sundy_fly/10149270
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