後台開發常常用到layUI架構，這樣才能讓整個頁面效果看起來美觀大方，然而有時候一些原生的效果放到layUI架構上是無法使用的，比如最近遇到了省市縣三級聯動的select效果。不同於之前的，layUI架構裡，需要重視select的lay-filter屬性，來監聽事件，另外需要form.render()來重新渲染，解決這兩大難題，聯動也就不再是難題。下面就來為大家分享下吧。
實現代碼：
<!DOCTYPE html><html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"><title>基於 Layui form 組件的省市區級聯的實現</title><link rel="stylesheet" href="http://www.zhengjinfan.cn/plugins/layui/css/layui.css" /></head><body><div style="margin: 50px auto; "><form class="layui-form"><div class="layui-form-item"><label class="layui-form-label">選擇地區</label><div class="layui-input-inline"><select name="province" lay-filter="province"><option value="">請選擇省</option></select></div><div class="layui-input-inline" style="display: none;"><select name="city" lay-filter="city"><option value="">請選擇市</option></select></div><div class="layui-input-inline" style="display: none;"><select name="area" lay-filter="area"><option value="">請選擇縣/區</option></select></div></div></form></div><script type="text/javascript" src="http://www.zhengjinfan.cn/plugins/layui/layui.js"></script><script type="text/javascript" src="http://www.zhengjinfan.cn/js/area.js"></script><script>(function(){var areaData=Area;var $, $form,form;var $selectProvince,$selectCity,$selectArea;layui.use(['jquery', 'form'], function() {$ = layui.jquery;form = layui.form();$form = $('form');$selectProvince=$form.find('select[name=province]');$selectCity=$form.find('select[name=city]');$selectArea=$form.find('select[name=area]');form.on('select(province)', function(data){var value = data.value;var d = value.split('_');var code = d[0];var count = d[1];var index = d[2];if(count > 0) {loadCity(areaData[index].mallCityList,index);$selectCity.parent().show();} else {$selectCity.parent().hide();$selectArea.parent().hide();$selectCity.find('[data-new=1]').remove();$selectArea.find('[data-new=1]').remove();form.render('select');}});form.on('select(city)', function(data){var value = data.value;var d = value.split('_');var code = d[0];var count = d[1];var index = d[2];var areaIndex=d[3];if(count > 0) {loadArea(areaData[index].mallCityList[index].mallAreaList);$selectArea.parent().show();} else {$selectArea.parent().hide();}});form.on('select(area)', function(data){});loadProvince();});function loadProvince(){for(var i=0,length=areaData.length;i<length;i++){$selectProvince.append('<option value="'+ areaData[i].provinceCode + '_' + areaData[i].mallCityList.length + '_' + i + '">'+areaData[i].provinceName+'</option>')}form.render('select');}function loadCity(citys,areaIndex){$selectCity.find('[data-new=1]').remove();$selectArea.find('[data-new=1]').remove();for(var i=0,length=citys.length;i<length;i++){$selectCity.append('<option data-new ="1" value="'+ citys[i].cityCode + '_' + citys[i].mallAreaList.length + '_' + i + '_'+areaIndex+'">'+citys[i].cityName+'</option>')}form.render('select');}function loadArea(areas){$selectArea.find('[data-new=1]').remove();$selectArea.find('[data-new=1]').remove();for(var i=0,length=areas.length;i<length;i++){$selectArea.append('<option data-new ="1" value="'+ areas[i].areaCode+'">'+areas[i].areaName +'</option>')}form.render('select');}})()</script></body></html>
以上就是本文的全部內容，希望對大家的學習有所協助，更多相關內容請關注topic.alibabacloud.com！
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