layui实现三级联动效果

时间:2021-04-03 人气:0

<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="src/css/layui.css" /> 
 </head> 
 <body> 
  <div class="layui-form"> 
   <div class="layui-input-inline"> 
    <select name="province" lay-filter="province" class="province"> 
     <option value="">请选择省</option> 
    </select> 
   </div> 
   <div class="layui-input-inline"> 
    <select name="city" lay-filter="city" disabled> 
     <option value="">请选择市</option> 
    </select> 
   </div> 
   <div class="layui-input-inline"> 
    <select name="area" lay-filter="area" disabled> 
     <option value="">请选择县/区</option> 
    </select> 
   </div> 
  </div> 
 </body> 
 <script type="text/javascript" src="src/layui.js"></script> 
 <script type="text/javascript" src="src/address.js"></script> 
 <script type="text/javascript"> 
  layui.config({ 
   base : "src/" //address.js的路径 
  }).use([ 'layer', 'jquery', "address" ], function() { 
   var layer = layui.layer, $ = layui.jquery, address = layui.address(); 
 
  }); 
 </script> 
<html>

JS:address.js

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("area",{code:'',type:1}, function (pro) {
 
 
   for (var i = 0; i < pro.length; i++) {
    proHtml += '<option value="' + pro[i].code + '">' + pro[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) {
     $.post('area',{code:value,type:2},function (val) {
      //console.log(val.length) ;
      that.citys(val) ;
     },"json");
     //that.citys(pro[$(this).index() - 1].childs);
 
 
    } else {
     $("select[name=city]").attr("disabled", "disabled");
    }
   });
  },'json');
 }
 
 //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) {
    $.post('area',{code:value,type:3},function (area) {
     that.areas(area) ;
    },"json");
    //that.areas(citys[$(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(); 
 }); 
});

ajax ->PHP 后台

/**
  * 地区三级联动
  */
  public function areaAction(){
   $code = $this->sys_getparam('code' ) ; // 获取省市区数据
   $type = $this->sys_getparam('type' ) ;
   
   if($type==1){ //省
    $sql = "
   SELECT id AS code,province AS name FROM a_province ;
   " ;
   }
   if($type==2){ //市
    $sql = "
   SELECT id AS code,city AS name FROM a_city WHERE province_id= $code ;
   " ;
   }
   if($type==3){ //区
    $sql = "
   SELECT id AS code,district AS name FROM a_district WHERE city_id= $code ;
   " ;
   }
   $areaData = app::dbload($sql,'all');
   echo json_encode($areaData) ;
  }

效果：

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