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$(function() {
$(".service_left li").click(
function(){
// console.log($(this).index())
/*每个li下属的div*/
var divShow = $(".content").children("div");
/*利用selected进行判断*/
// console.log($(this).hasClass(""))
if($(this).hasClass("")){
/*li标签的顺序和div的顺序是对应的，获取索引*/
var index = $(this).index();
/*当前对象设置class属性*/
$(this).addClass("selected");
/*移除其他同级元素属性*/
$(this).siblings("li").removeClass("selected");
/*展示当前li对应的div内容,利用方法显示和隐藏*/
$(divShow[index]).show();
/*隐藏同级元素*/
$(divShow[index]).siblings("div").hide();
}
})