Add shopping cart and purchase product functions

1, introduce jquery file

2, Add to cart function

Add click event in a tag

buynow()">Buy Now addshoppingcart()">Add to shopping cart

To add to the shopping cart, you only need to know two attributes of the product: one is the product ID, and the other is the purchase quantity

3, add ajax implementation method for shopping

       
4, based on cookie Implementation of adding shopping cart
       
New shoppingcart.php file
       
The code is as follows:
       
alert($buynum+$id)"; if(!empty($_COOKIE["shoppingcart"])) $shoppingcart=unserialize($_COOKIE["shoppingcart"]); else $shoppingcart=array(); if(isset($id) && isset($buynum)){ $id=intval($id); $buynum=intval($buynum); $shoppingcart[]=array($id,$buynum); } setcookie('shoppingcart',serialize($shoppingcart));//商品属性进行序列化保存到cookie中 return"true"; }
       
5, shopping cart purchase implementation
       
click When purchasing, you need to add it to the shopping cart first and then jump to the purchase page. Modify the goodsshow.php code as follows:
       
 //立即购买 function buynow(){ //先添加到购物车再进行跳转到购买页面 addshoppingcart("buy"); } //添加到购物车 function addshoppingcart(a){ $.ajax({ url:"shoppingcart.php?a=addshoppingcart", type:"post", data:{'buynum':$("#buynum").val(),'id':$("#id").val()}, dataType:"html", success:function (data) { if(a=="buy"){ location.href="shoppingcart.php?a=buynow"; }else{ if(data){ alert("添加购物车成功!"); } } } }) } 
       
Add the code in shoppingcart.php: