最近接觸layui,比較簡潔美觀的一款ui,但也有很多小坑,記錄一下實現省市區下拉三級聯動更新回顯的問題
<%--監聽省份選擇 --%> form.on('select(uprovinceId)', function(data){ initCityList('change');});
這里面有個問題就是 選擇的時候 如果 請選擇 的value 是“” 空字符串,當選擇從河北省變到請選擇時不會觸發這個監聽事件
<script type="text/javaScript">layui.use(['form'],function(){ var form = layui.form; <%--監聽省份選擇 --%> form.on('select(uprovinceId)', function(data){ initCityList('change');});<%--監聽城市選擇 --%> form.on('select(ucityId)', function(data){initDistrictList('change');}); <%--監聽修改提交 --%> form.on('submit(update)', function(data){ updateAccount(); form.render(); return false; //阻止表單跳轉。如果需要表單跳轉,去掉這段即可。});});<%-- 監聽取消按鈕 --%>$(document).on("click",".cancel",function(){ layer.closeAll("page");}); $(function(){<%--初始化省份列表 --%>initProvinceList('init');initCityList('init');initDistrictList('init');});<%--初始化省份列表 --%>function initProvinceList(flag){var provinceId = $("#oldProvinceId").val();$("#uprovinceId").append("<option value='" + -1 +"'>" + '請選擇' + "</option>");$("#udistrictId").append("<option value='" + -1 + "'>" + '請選擇' + "</option>");$("#ucityId").append("<option value='" + -1 + "'>" + '請選擇' + "</option>");var url = "${ctx}/admin/getProvinceList.action?ranNum="+Math.random();$.post(url,{},function(data){var list = eval(data); for (i = 0; i < list.length; i++) { var name = list[i].province; var id = list[i].id; if(id == provinceId){ $("#uprovinceId").append("<option value='" + id + "' selected>" + name + "</option>"); }else{ $("#uprovinceId").append("<option value='" + id + "'>" + name + "</option>"); } } layui.use(['form'],function(){ var form = layui.form; form.render(); });});}<%--初始化城市列表 --%>function initCityList(flag){var provinceId = $("#uprovinceId").val();var oldProvinceId = $("#oldProvinceId").val();if(provinceId == -1 && flag == "init"){provinceId = oldProvinceId; }var cityId = $("#oldCityId").val();$("#ucityId").empty();$("#ucityId").append("<option value='" + -1 + "'>" + '請選擇' + "</option>");$("#udistrictId").empty();$("#udistrictId").append("<option value='" + -1 + "'>" + '請選擇' + "</option>");var url = "${ctx}/admin/getCityList.action?ranNum="+Math.random();$.post(url,{provinceId:provinceId},function(data){var list = eval(data);alert(list.length+"list長度"); for (i = 0; i < list.length; i++) { var name = list[i].city; var id = list[i].id; if(id == cityId){ $("#ucityId").append("<option value='" + id + "' selected>" + name + "</option>"); }else{ $("#ucityId").append("<option value='" + id + "'>" + name + "</option>"); } } layui.use(['form'],function(){ var form = layui.form; form.render(); });});}<%--初始化區列表 --%>function initDistrictList(flag){var cityId = $("#ucityId").val();var oldCityId = $("#oldCityId").val();if(cityId == -1 && flag == "init"){cityId = oldCityId;}var districtId = $("#oldDistrictId").val();$("#udistrictId").empty();$("#udistrictId").append("<option value='" + -1 + "'>" + '請選擇' + "</option>");var url = "${ctx}/admin/getDistrictList.action?ranNum="+Math.random();$.post(url,{cityId:cityId},function(data){var list = eval(data); for (i = 0; i < list.length; i++) { var name = list[i].district; var id = list[i].id; if( id == districtId){ $("#udistrictId").append("<option value='" + id + "' selected>" + name + "</option>"); }else{ $("#udistrictId").append("<option value='" + id + "'>" + name + "</option>"); } } layui.use(['form'],function(){ var form = layui.form; form.render(); });});}</script> <div class="layui-form-item city" style="margin-bottom: -8px;"> <label class="layui-form-label">所負責區域</label> <div class="layui-inline"> <div class="layui-input-inline" style="width: 90px;margin-right: 0px;margin-bottom: 0px;"> <select id="uprovinceId" name="provinceId" lay-verify="required" lay-search="" lay-filter="uprovinceId"> <!-- <option value="-1">請選擇</option> --> </select> </div> </div> <div class="layui-inline"> <div class="layui-input-inline" style="width: 90px;margin-right: 0px;margin-bottom: 0px;"> <select id="ucityId" name="cityId" lay-verify="required" lay-search="" lay-filter="ucityId" οnchange="initDistrictList()"> <!-- <option value="-1">請選擇</option> --> </select> </div> </div> <div class="layui-inline"> <div class="layui-input-inline" style="width: 90px;margin-right: 0px;margin-bottom: 0px;"> <select id="udistrictId" name="districtId" lay-verify="required" lay-search=""> <!-- <option value="-1">請選擇</option> --> </select> </div> </div> </div><input type = "hidden" value="${admin.provinceId }" id="oldProvinceId"><input type = "hidden" value="${admin.cityId }" id="oldCityId"><input type = "hidden" value="${admin.districtId }" id="oldDistrictId">
以上這篇解決layui 三級聯動下拉框更新時回顯的問題就是小編分享給大家的全部內容了,希望能給大家一個參考,也希望大家多多支持武林網。
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