layui实现下拉框三级联动
编程学习 2021-07-04 15:51www.dzhlxh.cn编程入门
这篇文章主要为大家详细介绍了layui实现下拉框三级联动，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
项目需要用layui的三级联动，自己整理了一下，做个记录
1.表结构设计
CREATE TABLE `dt_area` ( `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '区域主键', `area_name` varchar(16) DEFAULT NULL COMMENT '区域名称', `area_code` varchar(128) DEFAULT NULL COMMENT '区域代码', `area_short` varchar(32) DEFAULT NULL COMMENT '区域简称', `area_is_hot` varchar(1) DEFAULT NULL COMMENT '是否热门(0:否、1:是)', `area_sequence` int(11) DEFAULT NULL COMMENT '区域序列', `area_parent_id` int(11) DEFAULT NULL COMMENT '上级主键', `init_date` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT '初始时间', PRIMARY KEY (`id`), KEY `parent_id` (`area_parent_id`) USING HASH ) ENGINE=InnoDB AUTO_INCREMENT=900001 DEFAULT CHARSET=utf8 COMMENT='区域字典';
2.mybatis xml
<select id="queryByParentId" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
select
<include refid="Base_Column_List" />
from dt_area
where area_parent_id = #{id,jdbcType=INTEGER}
</select>
根据上级主键查询
3.页面元素
<div class="layui-form-item">
<label class="layui-form-label">地址</label>
<div class="layui-input-inline">
<select id="province" lay-filter="province" lay-verify="required" lay-search="">
<option value="">请选择或搜索省</option>
</select>
</div>
<div class="layui-input-inline">
<select id="city" lay-filter="city" lay-verify="required" lay-search="">
<option value="">请选择或搜索市</option>
</select>
</div>
<div class="layui-input-inline">
<select id="area" lay-filter="area" lay-verify="required" lay-search="">
<option value="">请选择或搜索县/区</option>
</select>
</div>
<div class="layui-input-inline" style="width: 45%;">
<input class="layui-input" id="" lay-verify="required" placeholder="请输入详细地址：城镇＋乡村＋街道＋门牌号码"></input>
</div>
</div>
4.js
layui.use(['form','layer','jquery'],function(){
var form = layui.form,
layer = parent.layer === undefined ? layui.layer : parent.layer,
$ = layui.jquery;
var provinceText = "";
var cityText = "";
var areaText = "";
//异步加载下拉框数据
$.post(WEB_ROOT+"dtArea/queryByParentId",{"id":0},function (data) {
if(!data.success){
layer.msg(data.msg)
}else{
var $html = "";
if(data.data != null) {
$.each(data.data, function (index, item) {
$html += "<option value='" + item.id + "'>" + item.areaName + "</option>";
});
$("#province").append($html);
//append后必须从新渲染
form.render('select');
}
}
});
//监听省下拉框
form.on('select(province)', function(dataObj){
//移除城市下拉框所有选项
$("#city").empty();
var cityHtml = '<option value="">请选择或搜索市</option>';
$("#city").html(cityHtml);
var areaHtml = '<option value="">请选择或搜索县/区</option>';
$("#area").html(areaHtml);
provinceText = $("#province").find("option:selected").text();
var value = $("#province").val();
//异步加载下拉框数据
$.post(WEB_ROOT+"dtArea/queryByParentId",{"id":value},function (data) {
if(!data.success){
layer.msg(data.msg)
}else{
var $html = "";
if(data.data != null) {
$.each(data.data, function (index, item) {
$html += "<option value='" + item.id + "'>" + item.areaName + "</option>";
});
$("#city").append($html);
//append后必须从新渲染
form.render('select');
}
}
});
});
//监听市下拉框
form.on('select(city)', function(dataObj){
//移除县区下拉框所有选项
$("#area").empty();
var html = '<option value="">请选择或搜索县/区</option>';
$("#area").html(html);
cityText = $("#city").find("option:selected").text();
var value = $("#city").val();
//异步加载下拉框数据
$.post(WEB_ROOT+"dtArea/queryByParentId",{"id":value},function (data) {
if(!data.success){
layer.msg(data.msg)
}else{
var $html = "";
if(data.data != null) {
$.each(data.data, function (index, item) {
$html += "<option value='" + item.id + "'>" + item.areaName + "</option>";
});
$("#area").append($html);
//append后必须从新渲染
form.render('select');
}
}
});
});
//监听县区下拉框
form.on('select(area)', function(dataObj){
areaText = $("#area").find("option:selected").text();
});
});
5.页面效果
附上联动sql
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持狼蚁SEO。