多店铺洗车微信小程序_JavaScript完成QQ列表打开缩

本文实例为大家分享了js实现QQ列表展开收缩扩展展示的具体代码，供大家参考，具体内容如下

效果图：

代码：

 html 
 head 
 meta http-equiv="Content-Type" content="text/html; charset=utf-8" / 
 title 无标题文档 /title 
 style 
ul,h2{margin:0; padding:0;}
li{list-style-type:none;}
#list{margin:0 auto; border:#333 solid 1px; width:250px;}
#list h2 {background: url(../img/ico1.gif) no-repeat 5px 14px #0C6; text-indent:20px; height:32px; line-height:32px;}
#list ul li{text-indent:25px; border-bottom:#333 solid 1px; line-height:24px; height:23px; }
#list .active{background: url(../img/ico2.gif) no-repeat 5px 14px #693; text-indent:20px; height:30px; line-height:30px;}
#list ul{display:none;}
.hover{background:#CFC;}
 /style 
 script 
window.onload = function(){
var oUl = document.getElementById("list");
var aUl =oUl.getElementsByTagName("ul");
var aH2 = oUl.getElementsByTagName("h2");
var aLi = null;
var arrLi = [];
var that = null;
for(i=0;i aH2.length;i++){
 aH2[i].index = i;
 aH2[i].onclick = function(){
 if(this.className==''){
 for(i=0;i aH2.length;i++){
aH2[i].className='';
aUl[i].style.display='none';
this.className='active';
aUl[this.index].style.display = 'block';
}else{
this.className='';
aUl[this.index].style.display='none';
for(i=0;i aUl.length;i++){
 aLi =aUl[i].getElementsByTagName("li");
 for(j=0;j aLi.length;j++){
 arrLi.push(aLi[j]);
for(var i=0;i arrLi.length;i++){
 arrLi[i].onclick = function(){
 for(i=0; i arrLi.length;i++){ 
arrLi[i].className='';
this.className = 'hover';
 /script 
 /head