鸿蒙js开发8 鸿蒙的商品购物车及参数传递 原创

本文初步的实现了商品添加到购物车和跳转购物车页面时参数的传递

效果图：

视图及样式：

<div class="container">
    <list class="listdiv">
        <block for="{{productlists}}">
            <list-item class="list-item">
                <text>{{$item.pname}}</text>
                <text>{{$item.price}}</text>
                <image class="imgdiv" src="/common/add.png" onclick="addproduct({{$idx}})"></image>
            </list-item>
        </block>
    </list>

    <div class="shopcardiv">
        <div class="shopcar" onclick="showshopcar">
            <image class="shopcarimg" src="/common/shopcar0.png"></image>
        </div>
        <!--初始不出现-->
        <div if="{{count>0?true:false}}" class="countdiv">
            <text class="t1">{{count}}</text>
        </div>
    </div>
</div>

.container {
    width: 100%;
    height: 1300px;
    background-color: snow;
    display: flex;
    flex-direction: column;
}
.listdiv{
    width: 100%;
    height: 90%;
}
.list-item{
    width: 100%;
    height: 20%;
    border-bottom: 1px solid silver;
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    align-items: center;
}
.imgdiv{
    width: 60px;
    height: 60px;
}
.shopcardiv{
    width: 100%;
    height: 9%;
    border-top: 1px solid darkolivegreen;
    position: fixed;
    bottom: 0px;
    left: 0px;
}
.shopcar{
    width: 80px;
    height: 80px;
    background-color: green;
    border-radius: 100px;
    position: absolute;
    left: 300px;
    bottom: 70px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.shopcarimg{
    width: 60px;
    height: 60px;
}
.countdiv{
    position: absolute;
    left: 350px;
    bottom: 110px;
    background-color: red;
    padding: 10px 20px;
    border-radius: 100px;
}
.t1{
    color: white;
    font-weight: bold;
}

业务逻辑层：

import prompt from '@system.prompt';
import router from '@system.router';
export default {
    data: {
        productlists:[{"pname":"P40","price":"¥4500"},
                      {"pname":"手环","price":"¥199"},
                      {"pname":"手表","price":"¥1388"},
                      {"pname":"电脑","price":"¥9999"},
                      {"pname":"耳机","price":"¥1099"},
                      {"pname":"Pad","price":"¥4999"},
                      {"pname":"智慧屏","price":"¥3299"}],
        count:0,

        //购物车商品
        carproduct:[]

    },
    addproduct(index){
        ++this.count;

        //商品记录到购物车中
        this.carproduct.push(this.productlists[index]);
    },

    showshopcar(){

        //
        prompt.showToast({
           message:this.carproduct
        });

        //鸿蒙带参数跳转页面
        router.push({
            uri:'pages/productcar/productcar',
            params:{
                carlists:this.carproduct
            }
        });
    }
}

选择商品后跳转到购物车页面：

鸿蒙页面跳转接收参数的方式：定义数据模型名称时和参数的名字一致即可

export default {
    data: {
        title:"购物车列表",
        //接收页面跳转时带的参数方式：定义名称和参数的名字一致即可
        carlists:[]
    }
}

视图及样式：

<div class="container">
    <div class="topdiv">
        <text>{{title}}</text>
    </div>
    <list class="listdiv">
        <block for="{{carlists}}">
            <list-item class="list-item">
                <text>{{$item.pname}}</text>
            </list-item>
        </block>
    </list>
</div>

.container {
    width: 100%;
    height: 1300px;
    display: flex;
    flex-direction: column;
}
.topdiv{
    width: 100%;
    height: 10%;
    border-bottom: 1px solid black;
    display: flex;
    justify-content: center;
    align-items: center;
}
.listdiv{
    width: 100%;
    height: 90%;
}
.list-item{
    width: 100%;
    height: 15%;
    border-bottom: 1px solid silver;
    display: flex;
    justify-content: center;
    align-items: center;
}