vue实现商城购物车功能

本文实例为大家分享了vue实现商城购物车功能的具体代码,供大家参考,具体内容如下

首先,先上最终的效果图

vue实现商城购物车功能

效果并不是很好看,但是这不是重点。

首先,我们先看下布局:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
<template>
  <div class="shopcar" id="demo04">
    <div class="header-title">
      <h3>购物车</h3>
    </div>
    <div class="car-list">
      <ul>
        <li class="car-item" v-for="(item,index) in good_list">
          <div class="input-block">
            <label class="input-label" :class="{active: item.is_selected}" :for="'car-checkbox-'+index" @click="select_one(index)"></label>
          </div>
          <div class="car-item-content">
            <div class="car-img">
              <img :src="item.img" />
            </div>
            <div class="car-cont">
              <h3>{{item.title}}</h3>
              <div class="cat-desc">
                <span v-for="spec in item.spec_item">{{spec}}</span>
              </div>
            </div>
            <div class="num">
              <span @click="reduce(index)">-</span>
              <span>{{item.num}}</span>
              <span @click="add(index)">+</span>
            </div>
            <div class="car-price">
              <span class="car-price">¥{{item.price}}</span>
              <span class="car-num">X{{item.num}}</span>
            </div>
          </div>
        </li>
      </ul>
    </div>
    <div class="car-footer">
      <div class="foot-car">
        <label for="foot-check" class="input-label" :class="{active: selected_all}" @click="slect_all"></label>
      </div>
      <div class="total-cont">
        <span>总价:{{totalPrice}}</span>
        <span>共{{totalNum}}件</span>
      </div>
      <div class="btn-box">
        <button>立即下单</button>
      </div>
    </div>
  </div>
</template>

非常常见的布局,微商城购物车随处可见,先说明下,在这里,实现选中的功能并不是用传统的label+checkbox实现,而是一个单独的label,目的是为了简化dom结构,在传统的jq项目或者zepto项目中,一般会会这样写,主要是为了方便操作demo,但是vue项目完全不用考虑dom的操作,怎么方便怎么来就ok。

在加些简单的样式,

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
.header-title
  height 42px
  line-height 42px
  background #f5f5f5
  border-bottom 1px solid #ddd
.header-title h3
  font-weight normal
  text-align center
.car-list 
  background #f2f2f2
  margin-top 12px
  padding 8px
.car-item
  border-bottom 1px solid #ddd
  position relative
  height 76px
  overflow hidden
.car-checkbox
  display none
.input-block
  width 30px
  float left
  height 55px
  line-height 55px
.input-label
  cursor pointer 
  position absolute 
  width 18px 
  height 18px 
  top 18px 
  left 0 
  background #fff 
  border:2px solid #ccc
  border-radius 50%
.input-label:after 
  opacity 0 
  content '' 
  position absolute 
  width 9px 
  height 5px 
  background transparent 
  top 6px 
  left 6px 
  border 2px solid #333 
  border-top none 
  border-right none 
  -webkit-transform rotate(-45deg) 
  -moz-transform rotate(-45deg) 
  -o-transform rotate(-45deg) 
  -ms-transform rotate(-45deg) 
  transform rotate(-45deg) 
.car-img
  width 64px
  height 64px
  float left
  overflow hidden
.car-img img
  width 100%
.input-label.active
  background #F15A24
.car-cont 
  margin-left 100px
.car-cont h3
  font-weight normal
  line-height 24px
  font-size 14px
.car-price 
  position absolute
  right 12px
  bottom 0px
  width 40px
  height 40px
  text-align right
.car-price span
  display block
  height 24px
  line-height 24px
  width 100%
.car-footer 
  height 60px
  background #f5f5f5
  position fixed
  bottom 0
  left 0
  right 0
.foot-car
  width 42px
  height 60px
  float left
  margin-left 12px
  position relative
.total-cont 
  height 60px
  line-height 60px
  font-size 16px
  float left
.total-cont span
  display inline-block 
  margin-left 12px
.btn-box
  float right
  height 60px
  line-height 60px
.btn-box button
  height 100%
  width: 100px
  border none
  background #F15A24
  color #fff
  font-size 16px
.num
  position absolute
  top 28px
  right 25px
  width 120px
.num span
  display inline-block
  width 28px
  height 28px
  float left
  text-align center
  line-height 28px
  border 1px solid #ddd
  font-size 14px

最近在学习stylus的使用,所以,就当做练习了。
接下就是javascript了。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
export default {
    data () {
      return {
        good_list: [
          {
            title: 'Apple iPhone 6s 16GB 玫瑰金色 移动联通电信4G手机',
            num: 2,
            price: 6070.00,
            spec_item:[
              '内存:16G',
              '网络:4G',
              '颜色:玫瑰金'
            ],
            is_selected: false
          },{
            title: 'Apple iPhone 6s 32GB 玫瑰金色 移动联通电信4G手机',
            num: 2,
            price: 4570.00,
            spec_item:[
              '内存:32G',
              '网络:4G',
              '颜色:玫瑰金'
            ],
            is_selected: true
          },{
            title: 'Apple iPhone 6s 8GB 玫瑰金色 移动联通电信4G手机',
            num: 2,
            price: 4870.00,
            spec_item:[
              '内存:8G',
              '网络:4G',
              '颜色:玫瑰金'
            ],
            is_selected: false
          },{
            title: 'Apple iPhone 6s 128GB 玫瑰金色 移动联通电信4G手机',
            num: 2,
            price: 10568.00,
            spec_item:[
              '内存:128G',
              '网络:4G',
              '颜色:玫瑰金'
            ],
            is_selected: true
          },
        ],
        totalPrice: 0,
        totalNum: 0,
        selected_all: false
      }
    },
    mounted: function () {
      this.getTotal();
    },
    watch: {
      'good_list': {
        handler: function (val, oldVal) {
          // console.log(val)
          return val;
        },
        deep: true
      }
    },
    methods: {
      getTotal () {
        this.totalPrice = 0
        this.totalNum = 0
        for (var i = 0; i < this.good_list.length; i++) {
          var _d = this.good_list[i]
          if(_d.is_selected){
            this.totalPrice += _d['price'] * _d['num']
            this.totalNum +=_d['num']
          }
        }
      },
      select_one (index) {
        if(this.good_list[index].is_selected == true){
          this.good_list[index].is_selected = false
        }else{
          this.good_list[index].is_selected = true
        }
        this.getTotal()
      },
      slect_all () {
        if(this.selected_all){
          for (var i = 0; i < this.good_list.length; i++) {
            this.good_list[i].is_selected = false;
          }
          this.selected_all = false            
        }else{
          for (var i = 0; i < this.good_list.length; i++) {
            this.good_list[i].is_selected = true;
          }
          this.selected_all = true            
        }
        this.getTotal()
      },
      reduce (index) {
        if(this.good_list[index].num <= 1) return;
        this.good_list[index].num --
        this.getTotal()
      },
      add (index) {
        this.good_list[index].num ++
        this.getTotal()
      }
    }
  }

这里用mock数据来代替后台请求数据的动作,为了方便测试,逻辑比较简单,首先getTotal这个方法用来计算选中的item的数量以及总价,select_one用来处理单个选中的逻辑,slect_all 用来处理全部选中以及全部取消选中的操作,reduce用来处理处理减操作,顾名思义add用来处理加的操作。当然在真实的开发中,还会有校验库存的动作,每次加减都要校验库存。数据处理也会更复杂,但是闻琴弦而知雅意,器原理都是相通的。

github地址传送门