vue实现仿淘宝结账页面

        这个demo，是小颖基于之前的 vue2.0在table中实现全选和反选   文章进行更新后的demo，主要功能呢，是仿照淘宝页面的结算购物车商品时自动算出合计价格的页面，具体页面效果请看下面的动图：（如果大家发现有什么问题请及时提出帮小颖改正错误呦，谢谢啦嘻嘻）

效果图：

   

更新后的home.vue

<template>
  <div class="container">
    <div class="checkout-title">
      <span>购物车</span>
    </div>
    <table class="product_table">
      <tbody>
        <template v-for="(list,index) in table_list">
          <tr>
            <td width="7%" min-width="94px" v-if="index===0">
              <input type="checkbox" v-model='checked' @click='checkedAll'>
            </td>
            <td width="7%" v-if="index!==0">
              <input type="checkbox" v-model='checkList' :value="list.id" @click=checkProductFun(index,$event)>
            </td>
            <td width="43%">{{list.product_inf}}</td>
            <td width="10%" v-if="index===0">{{list.product_price}}</td>
            <td width="10%" v-if="index!==0">&yen;{{list.product_price}}</td>
            <td width="10%" v-if="index===0">{{list.product_quantity}}</td>
            <td width="10%" v-if="index!==0">
              <a class="numbers plus" href="javascript:void(0)" @click="changeMoney(index,-1)">-</a>
              <input class="txt_number" type="text" v-model="list.product_quantity" size="1" disabled>
              <a class="numbers reduce" href="javascript:void(0)" @click="changeMoney(index,1)">+</a>
            </td>
            <td width="10%">{{list.total_amount}}</td>
            <td width="20%" v-if="index===0">编辑</td>
            <td width="20%" v-if="index!==0">
              <a href="javascript:void(0)" class="update">修改</a>
              <a href="javascript:void(0)" class="delete">删除</a>
            </td>
          </tr>
        </template>
      </tbody>
    </table>
    <div class="price_total_bottom">
      <div class="price_total_ms">
        <label>合计：{{allProductTotal}}</label>
        <router-link to="/userAddress">结账</router-link>
      </div>
    </div>
  </div>
</template>
<script>
import userAddress from './address'
export default {
  components: {
    userAddress
  },
  data() {
    return {
      table_list: [{
        'id': 0,
        'product_inf': '商品信息',
        'product_price': '商品金额',
        'product_quantity': '商品数量',
        'total_amount': '总金额'
      }, {
        'id': '1',
        'product_inf': '女士银手链',
        'product_price': 100,
        'product_quantity': 10,
        'total_amount': 1000
      }, {
        'id': '2',
        'product_inf': '女士银手镯',
        'product_price': 200,
        'product_quantity': 5,
        'total_amount': 1000
      }, {
        'id': '3',
        'product_inf': '女士银耳环',
        'product_price': 50,
        'product_quantity': 10,
        'total_amount': 500
      }],
      checked: false,
      allProductTotal: null,
      checkList: ['1', '3']
    }
  },
  mounted: function() {
    var _this = this;
    // 根据data中默认勾选的checkbox，计算当前勾选的商品总价
    _this.allProductTotal = 0;
    this.checkList.forEach(function(element1, index1) {
      _this.table_list.forEach(function(element2, index2) {
        if (element1 == element2.id) {
          _this.$set(_this.table_list[index2], 'checked', true);
          _this.allProductTotal += element2.product_price * element2.product_quantity;
        }
      });
    });
  },
  methods: {
    checkedAll: function() {
      var _this = this;
      _this.allProductTotal = 0;
      if (_this.checked) { //实现反选
        _this.checkList = [];
        _this.table_list.forEach(function(item, index) {
          if (_this.table_list[index].checked) {
            _this.table_list[index].checked = false;
          }
        });
      } else { //实现全选
        _this.checkList = [];
        _this.table_list.forEach(function(item, index) {
          if (index > 0) {
            _this.checkList.push(item.id);
            if (!_this.table_list[index].checked) {
              _this.$set(_this.table_list[index], 'checked', true);
            } else {
              _this.table_list[index].checked = true;
            }
            if (item.checked) {
              _this.allProductTotal += item.product_price * item.product_quantity;
            }
          }
        });
      }
    },
    checkProductFun(index, event) { //根据checkbox是否勾选，计算勾选后的商品总价
      var _this = this;
      _this.allProductTotal = 0;
      if (event.target.checked) {
        if (!_this.table_list[index].checked) {
          _this.$set(_this.table_list[index], 'checked', true);
        }
      } else {
        if (_this.table_list[index].checked) {
          _this.table_list[index].checked = false;
        }
      }
      this.table_list.forEach(function(item, index) {
        if (item.checked) {
          _this.allProductTotal += item.product_price * item.product_quantity;
        }
      });
    },
    changeMoney: function(index, way) {
      if (way > 0) {
        this.table_list[index].product_quantity++;
      } else {
        this.table_list[index].product_quantity--;
        if (this.table_list[index].product_quantity < 1) {
          this.table_list[index].product_quantity = 1;
        }
      }
      this.calcTotalPrice();
    },
    calcTotalPrice: function() {
      var _this = this;
      _this.allProductTotal = 0;
      this.table_list.forEach(function(item, index) {
        if (index > 0) { //因为第一行为表头不需要进行计算
          item.total_amount = item.product_price * item.product_quantity; //根据商品数量计算每一个商品对应的总金额
        }
        if (item.checked) {
          _this.allProductTotal += item.product_price * item.product_quantity; //根据是否否选该商品的checkbox，计算总价
        }
      });
    },
  },
  watch: { //深度 watcher
    'checkList': {
      handler: function(val, oldVal) {
        if (val.length === this.table_list.length - 1) {
          this.checked = true;
        } else {
          this.checked = false;
        }
      },
      deep: true
    }
  }
}

</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
.container {
  padding: 69px 0 54px 0;
}

table {
  border-collapse: collapse;
  border-color: transparent;
  text-align: center;
}

.product_table,
.product_table tbody {
  width: 100%
}

.product_table tr:first-child {
  background: #ece6e6;
  color: #e66280;
  font-size: 20px;
}

.product_table td {
  border: 1px solid #f3e8e8;
  height: 62px;
  line-height: 62px;
}

.product_table a.update:link,
.product_table a.update:visited,
.product_table a.update:hover,
.product_table a.update:active {
  color: #1CE24A;
}

.product_table a.delete:link,
.product_table a.delete:visited,
.product_table a.delete:hover,
.product_table a.delete:active {
  color: #ffa700;
}

.product_table .txt_number {
  text-align: center;
}

.product_table .numbers {
  font-weight: bold;
}

.price_total_bottom {
  font-size: 20px;
  padding: 20px 10px;
}

.price_total_ms {
  text-align: right;
}

.price_total_bottom .price_total_ms label {
  margin-right: 100px;
}

.price_total_bottom .price_total_ms a {
  cursor: default;
  text-align: center;
  display: inline-block;
  font-size: 20px;
  color: #fff;
  font-weight: bold;
  width: 220px;
  height: 54px;
  line-height: 54px;
  border: 0;
  background-color: #f71455;
}

</style>