基于JQuery的购物车添加删除以及结算功能示例

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");

$(".list").append('<div class="select things" num='+kNum+'><img src='+thingsImage+'/><p class="name">'+thingsName+'</p><p class="price">$<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></div>');
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")
}
}
}
})