JQuery implements shopping cart addition, deletion and settlement functions-JS Tutorial-php.cn

JQuery implements shopping cart addition, deletion and settlement functions

小云云

Release： 2018-05-15 11:12:29

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This article mainly introduces examples of adding, deleting and settling shopping cart functions based on JQuery. It has certain reference value. Interested friends can refer to it. I hope it can help everyone.

I learned some time ago that shopping cart settlement is a difficult part, and I also found some online. However, in addition to plug-ins, there are some semi-finished products on the Internet. For example, some only have add and delete effects, and the other only have settlement. Function, it is rare to see the integrated shopping cart effect, so I wrote one myself for everyone to check
(The added effect did not fly in, I am too lazy to write the animation effect, so I will just watch it)

HTML part

<!DOCTYPE html> 
<html> 
<head> 
   <meta charset="utf-8"> 
   <meta http-equiv="X-UA-Compatible" content="IE=edge"> 
   <title></title> 
   <link rel="stylesheet" href="css/index.css" rel="external nofollow" > 
   <script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js" type="text/javascript" charset="utf-8"></script> 
   <script src="js/index.js" type="text/javascript" charset="utf-8" async defer></script> 
</head> 
<body> 
   <p id="banner"></p> 
   <p id="container"> 
    <ul> 
      <li num="1"><img src="images/1.jpg"/><span class="things_name">2014年春季爆品A<p>$<i>10</i><span class="buy">点击购买</p></li> 
      <li num="2"><img src="images/2.jpg"/><span class="things_name">2014年春季爆品B<p>$<i>20</i><span class="buy">点击购买</p></li> 
      <li num="3"><img src="images/3.jpg"/><span class="things_name">2014年春季爆品C<p>$<i>30</i><span class="buy">点击购买</p></li> 
      <li num="4"><img src="images/4.jpg"/><span class="things_name">2014年春季爆品D<p>$<i>40</i><span class="buy">点击购买</p></li> 
    </ul> 
   </p> 
    
   <p id="carlist"> 
    <p class="car"> 
      <p> 
        <span class="carLogo"><span><img src="images/car.png"/> 
        <span class="txt">购<br />物<br />车 
      </p> 
       
    </p> 
    <p class="list"> 
      <!--此处添加动态元素--> 
      <p class="total"> 
        <span>总价：<span>0元 
      </p> 
    </p> 
   </p> 
   <script type="text/javascript"> 
    function view(){ 
          return{ 
            w:document.documentElement.clientWidth, 
            h:document.documentElement.clientHeight 
          }; 
        } 
        document.body.style.height=view().h+"px"; 
   </script> 
</body> 
</html>

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JS part

$(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"); 
       
   $(".list").append(&#39;<p class="select things" num=&#39;+kNum+&#39;><img src=&#39;+thingsImage+&#39;/><p class="name">&#39;+thingsName+&#39;</p><p class="price">$<i>&#39;+thingsPrice+&#39;</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>&#39;); 
   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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