Vue简单小练习

Vue实现购物车列表

最终效果图:

当勾选行时,自动进行总和计算;可以进行单列删除,也可以使用复选框,进行多选批量删除;可以对商品数量进行更改,但商品数量为1时将不能进行减少。

Vue简单小练习_第1张图片

表格html:

引入jquery.js、bootstrap.css进行表格美化,并且引入要用到的vue.js。

<script type="text/javascript" src="../lib/jquery-2.1.0.min.js"></script>
<link rel="stylesheet" href="../lib/bootstrap.css">
<script type="text/javascript" src="../lib/vue.js"></script>
<div class="container">
		<div id="list">
			<div class="panel panel-default">
				<div class="panel-heading">
					<div class="panel-body">
						<template v-if="list.length">
							<table class="table table-bordered table-hover table-striped" style="text-align:center;">
								<thead style="background-color: #7A8B8B">
									<tr>
										<td><input id="allcheck" type="checkbox" @click="allcheck(event)" :checked="list.length===listIds.length && listIds.length"></td>
										<td>商品名称</td>
										<td>商品价格</td>
										<td>购买数量</td>
										<td>操作</td>
									</tr>
								</thead>
								<tbody>
									<tr v-for="(item,index) in list" :key = "index">
										<td><input type="checkbox" name="boxs" :value="index" @click="checkedOne(item.id)" :checked="listIds.indexOf(item.id)>=0"></td>
										<td>{{ item.name }}</td>
										<td>{{ item.price }}</td>
										<td><button type="button" class="btn btn-xs" @click="del(index)" :disabled="item.count===1">-</button>
											{{ item.count }}
											<button type="button" class="btn btn-xs" @click="add(index)">+</button></td>
											<td><button type="button" class="btn btn-xs" @click="move(index)">删除</button></td>
										</tr>
									</tbody>
								</table>
							</template>
							<div v-else>购物车为空!</div>
						</div>
						<div class="panel-footer">{{ total }}元!
							<button type="button" class="btn btn-default" style="float:right;" :disabled="listIds.length==0" @click="deleteAll">批量删除</button>
						</div>
					</div>
				</div>
			</div>
		</div>

Vue:

①表格数据 :使用v-for进行表格数据绑定

var vm = new Vue({
			el:"#list",
			data:{
				isCheckedAll: false,
				listIds: [],
				list:[
				{
					id:1,
					name:"aaaaaaa",
					price:2222,
					count:1
				},{
					id:2,
					name:"bbbbbb",
					price:2222,
					count:2
				},{
					id:3,
					name:"cccccc",
					price:2222,
					count:1
				}]
			},

②计算属性 :判断复选框的勾选情况实时计算总额

computed:{
				total:function(){
					var	total=0;
					for(var i = 0 ;i < this.listIds.length ; i++ ){
						var n=this.listIds[i];
						var item = this.list.find((element) => (element.id == n));
						total+=item.count*item.price;	
					}
					return total.toString().replace(/B(?=(\d{3})+$)/g,",");
				}
			},

③methods:各个按钮的点击事件(包含复选框勾选,全选,数量更改,单行删除,批量删除)

methods:{
				checkedOne (listId) {
					let idIndex = this.listIds.indexOf(listId);
                if (idIndex >= 0) {     //如果listIds中已经包含就去除
                	this.listIds.splice(idIndex, 1);
                } else {       //如果listIds中没有包含就添加
                	this.listIds.push(listId);
                }
            },
            del:function(index){
            	if(this.list[index].count===1) return;
            	this.list[index].count--;
            },
            add:function(index){
            	this.list[index].count++;
            },
            move:function(index){
            	this.listIds = [];
            	this.list.splice(index,1);
            },
            allcheck:function(e){
            	this.isCheckedAll = e.target.checked;
                    if (this.isCheckedAll) {//全选时
                    	this.listIds = [];
                    	this.list.forEach(item => {
                    		this.listIds.push(item.id);
                    	})
                    } else {
                    	this.listIds = [];
                    }
                },
                deleteAll:function(){
                	this.list = this.list.filter(item => this.listIds.indexOf(item.id) === -1);
                	this.listIds = [];
                }
            }

谢谢!!

你可能感兴趣的:(web前端,vue)