基于JQuery的购物车添加删除以及结算功能示例

JS部分

$(function(){ 
 var mark=0; 
 $(".car").on("click",function(){ 
   if(mark==0){ 
     $("#carlist").animate({marginRight:"0px"},500) 
     mark=1; 
   }else{ 
     $("#carlist").animate({marginRight:"-260px"},500) 
     mark=0 
   } 
 }) 
 
 
 //点击购买按钮添加至购物车 
 var buyButton=$(".buy"); 
 buyButton.on("click",BuyClick) 

 function BuyClick(){ 
   var thingsName=$(this).parents("li").find(".things_name").text(); 
   var thingsPrice=$(this).parent().find("i").text(); 
   var thingsImage=$(this).parents("li").find("img").attr("src"); 
   var kNum=$(this).parents("li").attr("num") 
   var Geshu=1; 
   $(this).off("click").text("已经添加至购物车"); 
       
   $(".list").append('<p class="select things" num='+kNum+'><img src='+thingsImage+'/><p class="name">'+thingsName+'</p><p class="price">$<i>'+thingsPrice+'</i></p><ul class="caozuo"><li class="zengjian"><span class="minus">-<span>1<span class="add">+</li><li class="del">删除</li></ul></p>'); 
   countTotalPrice(); 
   totalGeshu(); 
    
   //点击加号添加商品个数 
    
   $(".add").off("click").on("click",function(){ 
     Geshu=parseInt($(this).parent().find("span:nth-of-type(2)").text()) 
     Geshu++ 
     $(this).parent().find("span:nth-of-type(2)").text(Geshu) 
     countTotalPrice(); 
     totalGeshu(); 
   }) 
    
   //动态生成的元素点击减号减少商品个数 
   $(".minus").off("click").on("click",function(){ 
     Geshu=parseInt($(this).parent().find("span:nth-of-type(2)").text()); 
     if(Geshu>1){ 
       Geshu--; 
       $(this).parent().find("span:nth-of-type(2)").text(Geshu) 
     }else{ 
       Geshu==1; 
     } 
     countTotalPrice(); 
     totalGeshu(); 
   }) 
    
   //删除购物车内的商品 
   var del=$(".del"); 
   del.each(function(){ 
     $(this).off("click").on("click",function(){ 
       var delName=$(this).parents(".things").find(".name").text(); 
       $(this).parents(".things").remove(); 
       countTotalPrice(); 
       totalGeshu(); 
       var oldBtn=$("#container ul li").find("span:contains("+delName+")").parents("li").find(".buy") 
       oldBtn.on("click",BuyClick).text("点击购买") 
     }) 
   }) 
 
   //计算总价函数 
   function countTotalPrice(){       
     var totalPrice=0,listThings=$(".list").find(".things"); 
     for (var i=0;i<listThings.length;i++) { 
       var this_geshu=parseInt(listThings.eq(i).find(".zengjian span:nth-of-type(2)").text()); 
       var this_price=parseInt(listThings.eq(i).find(".price i").text()); 
       totalPrice+=this_geshu*this_price; 
     } 
     $(".total span").eq(1).text(totalPrice); 
     totalGeshu(); 
   } 
    
   //购物车上的商品总数 
   function totalGeshu(){ 
     var listThings=$(".list").find(".things"); 
     if (listThings.length>0) { 
       var totalGeshu=0; 
       listThings.each(function(){ 
         var this_geshu=parseInt($(this).find(".zengjian span:nth-of-type(2)").text()); 
         totalGeshu+=this_geshu; 
       }) 
       $(".carLogo span").html(totalGeshu) 
     } else{ 
       $(".carLogo span").css("display","none") 
     } 
   } 
 } 
})                 
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