淘寶購物車功能，效果如下圖
非常簡單的邏輯，沒有做代碼的封裝，代碼如下
<div class="list-container">
<div class="top-ops">
<div>
<img src="../../../static/images/HomeRecommendShopInfoAdress@2x.png" alt="">
<span>浙江省杭州市...</span>
</div>
<div class="ops">
<span v-if="cartStatus === 'account'" @click="cartStatus = 'edit'">編輯商品</span>
<span v-if="cartStatus === 'edit'" @click="cartStatus = 'account'">完成</span>
</div>
</div>
<div class="paddingB200">
<div class="shop-list" v-for="(item,index) in cartShops" :key="index">
<div class="shop-name">
<label>
<input type="checkbox"
name="shopRadio"
:value="item.productShopId"
@click="shopCheck($event,cartShops)"
class="disN">
<b></b>
</label>
<div>
<div>
<img src="../../../static/images/mall@2x.png" alt="">
<span class="name">{{item.shopName}}</span>
</div>
<span>
<img src="../../../static/images/jtxq@2x.png" alt="">
</span>
</div>
</div>
<div class="goods-list" v-for="(goods,goodsIndex) in item.detailLists" :key="goodsIndex">
<label>
<input type="checkbox"
name="goodRadio"
:price="goods.price"
:num="goods.number" :dataId="item.productShopId"
:value="goods.cartDetailId"
@click="goodsCkeck($event,item.detailLists,cartShops,item.productShopId)"
class="disN">
<b></b>
</label>
<div class="middle">
<img :src="goods.reportImage" alt="">
<div>
<p class="name">{{goods.name}}</p>
<p class="spec">{{goods.specifications}}</p>
<p class="tab">
<img src="../../../static/images/lsspbq@2x.png" alt="">
</p>
</div>
</div>
<div class="right">
<p class="price">￥{{goods.price}}</p>
<p class="num">X{{goods.number}}</p>
<p class="caculate">
<span class="mark" @click="numDecrease(goods.number)"></span>
<span class="beeforCacul">{{goods.number}}</span>
<span class="cacul" :num="goods.cartDetailId">{{goods.number}}</span>
<span class="mark" @click="numAdd(goods.number)"></span>
</p>
</div>
</div>
</div>
<div class="edit" v-if="cartStatus === 'edit'">
<label>
<input type="checkbox" name="allRadio" class="disN" @click="allCheck($event)">
<b></b>
<span>全選</span>
</label>
<span class="delet">刪除(3)</span>
</div>
<div class="gotopay" v-if="cartStatus === 'account'">
<label>
<input type="checkbox" name="allRadio" class="disN" @click="allCheck($event)">
<b></b>
<span class="marginR40">全選</span>
<span>合計：</span>
<span class="sum">￥{{sumPrice.toFixed(2)}}</span>
</label>
<span class="delet" @click="cauSum">去結算({{totalNumber}})</span>
</div>
</div>
</div>
export default {
components: {
},
name: "life",
data() {
return {
cartStatus:"account", //購物車狀態，account結算，edit刪除編輯狀態
cartShops: [], //店鋪列表
sumPrice:0, //合計金額
totalNumber: 0, //總數
shopList:[], //店鋪列表
goodsList:[], //商品列表
};
},
watch: {
},
mounted() {
this.getCartDetail();
},
methods: {
//購物車列表
getCartDetail: function(){
this.$http.get("api/product/v1/getCartDetail").then( res => {
if(res.data.code === 200){
//console.log(res.data.data)
this.cartShops = res.data.data.cartShops;
}else{
Toast(res.data.msg);
}
}).catch( error => {
console.log(error)
})
},
//商品選擇
goodsCkeck: function(event,goodsList,shopList,shopId){
//商品列表+-，店鋪是否checked(店鋪列表+-),全選是否checked
var input = document.getElementsByTagName('input')
if(event.currentTarget.checked){
this.goodsList.push(String(event.currentTarget.value));
//如果店鋪內所有商品全選，店鋪選中
var newArr = this.goodsList;
var tt = goodsList.every(function(itemValue){
return (newArr.indexOf(String(itemValue.cartDetailId)) != -1)
})
if(tt){
//店鋪內全選,店鋪checked,店鋪列表+
for(var i = 0;i<input.length;i++){
if(input[i].value == shopId){
input[i].checked = true;
}
}
this.shopList.push(String(shopId)); //防止shopid是number類型造成麻煩
//如果所有店鋪都全選，則全選按鈕checked
if(this.shopList.length === shopList.length){
//所有店鋪全選
for(var i = 0;i<input.length;i++){
if(input[i].name == 'allRadio'){
input[i].checked = true;
}
}
}
}
}else{
//商品列表--
this.goodsList.splice(this.goodsList.indexOf(event.currentTarget.value),1)
//如果店鋪checked，則取消，店鋪列表--
for(var i = 0;i<input.length;i++){
if(input[i].value == shopId){
if(input[i].checked){
input[i].checked = false;
this.shopList.splice(this.shopList.indexOf(String(shopId)),1); //防止shopid是number類型造成麻煩
}
}
//任意一個不選，全選取消
if(input[i].name == 'allRadio'){
input[i].checked = false;
}
}
}
//計算總價和數量
this.caculate();
},
//店鋪選擇
shopCheck: function(event,shopList){
//店鋪選中則對應商品全選，否則全不選
//console.log(event.currentTarget)
var input = document.getElementsByTagName('input')
if(event.currentTarget.checked){
//店鋪列表+，店鋪checked,店鋪內商品全checked，商品列表++
//console.log(this.shopList)
this.shopList.push(String(event.currentTarget.value));
//店鋪內商品全checked
for(var i = 0;i<input.length;i++){
if(input[i].getAttribute('dataId') == event.currentTarget.value){
//將沒有選中的checked,並加入列表，去重
if(!input[i].checked){
input[i].checked = true;
//商品列表++
this.goodsList.push(String(input[i].value))
}
}
}
//所有店鋪全選
if(this.shopList.length === shopList.length){
for(var i = 0;i<input.length;i++){
if(input[i].name == 'allRadio'){
input[i].checked = true;
}
}
}
}else{
//店鋪取消checked,店鋪列表--，店鋪內所有商品取消checked,商品列表--
this.shopList.splice(this.shopList.indexOf(String(event.currentTarget.value)),1);
//店鋪內所有商品取消checked
for(var i = 0;i<input.length;i++){
if(input[i].getAttribute('dataId') == event.currentTarget.value){
input[i].checked = false;
//商品列表--
this.goodsList.splice(this.goodsList.indexOf(input[i].value),1);
}
//任意一個不選，全選取消
if(input[i].name == 'allRadio'){
input[i].checked = false;
}
}
}
//計算總價和數量
this.caculate();
},
//所有全選
allCheck: function(event){
var input = document.getElementsByTagName('input')
if(event.currentTarget.checked){
//全選checked,所有店鋪checked,店鋪列表++,所有商品checked,商品列表++
for(var i = 0;i<input.length;i++){
//去重
if(!input[i].checked){
input[i].checked = true;
if(input[i].name == 'shopRadio'){
this.shopList.push(String(input[i].value))
}
if(input[i].name == 'goodRadio'){
this.goodsList.push(String(input[i].value))
}
}
}
}else{
//全不選取消checked,店鋪全部取消checked,店鋪列表清空，所有商品取消checked,商品列表清空
for(var i = 0;i<input.length;i++){
input[i].checked = false;
this.shopList = [];
this.goodsList = [];
}
}
//計算總價和數量
this.caculate();
},
//計算總金額總數量
caculate: function(){
var input = document.getElementsByTagName('input');
var newArr = [];
for(var i = 0;i<input.length;i++){
if(input[i].name == 'goodRadio' && input[i].checked){
var num = input[i].parentNode.parentNode.children[2].children[2].children[2].innerHTML;
newArr.push(
{
'price': input[i].getAttribute('price'),
'num': num
}
)
}
}
this.totalNumber = newArr.length;
//歸零
this.sumPrice = 0;
for(var j = 0,len = newArr.length;j<len;j++){
this.sumPrice += newArr[j].price * newArr[j].num;
}
},
//數量減小
numDecrease: function(num){
//如果當前input選中，則修改數量計算價格，如果當前input沒有選中，則修改數量不計算價格
var spanList = event.currentTarget.parentNode.children;
for(var i = 0,len = spanList.length;i<len;i++){
if(spanList[i].getAttribute("class") == 'beeforCacul'){
spanList[i].style.display = 'none';
}
if(spanList[i].getAttribute("class") == 'cacul'){
spanList[i].style.display = 'block';
var caculNum = spanList[i].innerHTML;
if(caculNum < 2){
Toast('寶貝不能再少了哦');
}else{
caculNum --
spanList[i].innerHTML = caculNum;
}
}
}
if(event.currentTarget.parentNode.parentNode.parentNode.children[0].children[0].checked){
this.caculate();
}
},
//數量增加
numAdd: function(num){
var spanList = event.currentTarget.parentNode.children;
//console.log(event.currentTarget.parentNode.children)
for(var i = 0,len = spanList.length;i<len;i++){
if(spanList[i].getAttribute("class") == 'beeforCacul'){
spanList[i].style.display = 'none';
}
if(spanList[i].getAttribute("class") == 'cacul'){
spanList[i].style.display = 'block';
var caculNum = spanList[i].innerHTML;
caculNum ++;
spanList[i].innerHTML = caculNum;
}
}
if(event.currentTarget.parentNode.parentNode.parentNode.children[0].children[0].checked){
this.caculate();
}
},
//去結算
cauSum:function(){
if(this.sumPrice === 0){
Toast('您還沒有選擇寶貝哦');
}else{
this.$router.push('/cart/order')
}
},
}
};