Detailed explanation of the steps to implement shopping cart and address selection in vue2

This time I will bring you a detailed explanation of the steps to implement shopping cart and address selection in vue2. What are the precautions for implementing the shopping cart and address selection steps in vue2. The following is a practical case. Let’s take a look. .

First of all, vue basic js writing method

new Vue({
  el:"#app",
  //模型
  data:{
  },
  filters:{
  },
  mounted:function(){
    this.$nextTick(function(){
    //初始化调用
    });
  },
  computed:{
    //实时计算
  },
  methods:{
  }
});

v-for

<li v-for="(item,index) in productList">
  <p class="item-name">{{item.productName}}</p>
</li>

v-model

(Real-time update)

<input type="text" value="0" disabled v-model="item.productQuantity">
<p class="item-price-total">{{item.productQuantity}}</p>

v-bind

<a href="javascript:;" class="item-check-btn" v-bind:class="{&#39;check&#39;:item.checked}">
<!--可通过更改item.checked的值设置是否选中-->
<!--必须用v-bind 不可直接在class里面直接使用{{}}-->
<!--v-bind:class= 可简写为 :class= -->

filtersUse of filters

1.html reference method

<p class="item-price">{{item.productPrice | money('元')}}</p>

2.Filter

filters:{
  formatMoney:function(value,type){
    return "￥"+value.toFixed(2)+ type;
  }
},

3. Global filter (written outside new Vue)

Vue.filter("money",function(value,type){
  return "￥"+value.toFixed(2) + type; //保留两位小数 结果eg:￥19.00元
});

Call the method in methods:

@click="method(param)"
//或者
@click="delFlag=false"
@click="limitNum=addressList.length"

computed real-time calculation

are as follows: three pieces of data are displayed by default, click more to display all

<li v-for="(item,index) in filterAddress">
<p class="shipping-addr-more">
<a class="addr-more-btn up-down-btn" href="javascript:" @click="limitNum=addressList.length">
  more
  <i class="i-up-down">
   <i class="i-up-down-l"></i>
   <i class="i-up-down-r"></i>
  </i>
 </a>
</p>
data:{
    limitNum:3
  },
computed:{
  filterAddress:function(){
    return this.addressList.slice(0,this.limitNum);
  }
},

Let’s first put forward one or two classic examples

1. The following implements the click selection of the loop card

<li v-for="(item,index) in filterAddress" v-bind:class="{&#39;check&#39;:index==currentIndex}" 
@click="currentIndex=index">
<!--其中currentIndex在js里需要定义-->

2. The following implements the click selection of the fixed card

<ul>
  <li v-bind:class="{&#39;check&#39;:shippingMethod==1}" @click="shippingMethod=1">
   <p class="name">标准配送</p>
   <p class="price">Free</p>
  </li >
  <li v-bind:class="{&#39;check&#39;:shippingMethod==2}" @click="shippingMethod=2">
   <p class="name">高级配送</p>
   <p class="price">180</p>
  </li>
 </ul>
 <!--其中shippingMethod在js里需要定义-->

Digression: Since I am a novice, I will learn a little bit, and I will also record the writing method of the auxiliary pop-up box mask layer

<p class="md-overlay" v-if="delFlag"></p>

#vue2’s js syntax is posted for easy reference

1. Call the backend method

var _this = this;
this.$http.get("data/address.json").then(function(response){
    _this.addressList = response; //这里不能直接用this 此this非彼this 所以只能声明_this
}); 
//以下为ES6写法，就可以直接用this了
let _this = this;  //没用，就放这看看~
this.$http.get("data/cartData.json",{"id":123}).then(res=>{
  this.productList = res.data.result.list;
});

2.forEachLoop

this.productList.forEach(function(item,index){
  if(typeof item.checked == 'undefined'){ 
  //如果item中没有checked属性 在item对象中添加checked属性，值为true
    _this.$set(item,"checked",true);//局部注册
    Vue.set(item,"checked",true);//全局注册
  }
});

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

Detailed explanation of the steps to implement Observer in Vue

Summary of vue parent component calling child component methods

Detailed explanation of the steps to use vue global and local components

The above is the detailed content of Detailed explanation of the steps to implement shopping cart and address selection in vue2. For more information, please follow other related articles on the PHP Chinese website!