Vue 基础 作业

1.用户管理

div部分,用bootstrap来写

<div class='container'>
    <form action="">
        <div class='form-group'>
            <label for="">用户名</label>
            <input type="text" class='form-control' placeholder="请输入用户名" v-model="student.uname">
        </div>
        <div class='form-group'>
            <label for="">密码</label>
            <input type="text" class='form-control' placeholder="请输入密码" v-model="student.pass">
        </div>
        <div class='form-group'>
            <label for="">邮箱</label>
            <input type="text" class='form-control' placeholder="请输入邮箱" v-model="student.email">
        </div>
        <div class='form-group text-center'>

            <input type="text" class='btn btn-success' value='添加' @click='add'>
            <input type="text" class='btn btn-info' value='重置'>
        </div>
    </form>
    <table class='table table-bordered'>
        <thead>
        <tr>
            <th>编号</th>
            <th>姓名</th>
            <th>密码</th>
            <th>邮箱</th>
            <th>操作</th>
        </tr>
        </thead>
        <tbody>
        <tr v-for="(value,index) in user">
            <td>{{index+1}}</td>
            <td>{{value.uname}}</td>
            <td>{{value.pass}}</td>
            <td>{{value.email}}</td>
            <td>
                <button @click='delt(index)'>删除</button>
            </td>
        </tr>
        </tbody>
    </table>
</div>

JS部分

<script src='../js/vue.js'></script>
<script>
    new Vue({
        el:'.container',
        data:{
            user:[
                {uname:'jack',pass:'123456',email:'123@126.com'},
                {uname:'rose',pass:'789456',email:'456@126.com'},
                {uname:'tom',pass:'456321',email:'789@126.com'}
            ],
            student:{}
        },
        methods:{
            add:function(){
                //浅克隆
                var newstu={}
                for(var i in this.student){
                    newstu[i]=this.student[i]
                }

                this.user.push(this.student);
                //this.student={}
            },
            delt:function(ind){
                this.user.splice(ind,1)
            }
        }
    })
</script>

效果如下:
Image 3.png

2.购物车

div部分,用bootstrap来写

<div class='container'>
    <table class='table table-bordered text-center'>
        <thead>
        <tr>
            <th class="text-center">编号</th>
            <th class="text-center">名称</th>
            <th class="text-center">单价</th>
            <th class="text-center">数量</th>
            <th class="text-center">小计</th>
        </tr>
        </thead>
        <tbody>
        <tr v-for="(value,index) in list">
            <td>{{index+1}}</td>
            <td>{{value.pname}}</td>
            <td>{{value.price}}</td>
            <td>
                <button @click='add(index)'>+</button>
                <span>{{value.count}}</span>
                <button @click='redu(index)'>-</button>
            </td>
            <td>{{value.sub}}</td>
        </tr>
        <tr>
            <td colspan="5">总价:¥{{sum}}</td>
        </tr>
        </tbody>
    </table>
</div>

JS部分

<script src='../js/vue.js'></script>
<script type="text/javascript">
    new Vue({
        el:'.container',
        data:{
            list:[
                {pname:'apple',price:3,count:2,sub:6},
                {pname:'pear',price:4,count:3,sub:12},
                {pname:'banana',price:5,count:4,sub:20}
            ],
            sum:0
        },
        methods:{
            add:function(ind){
                //数量
                this.list[ind].count++;
                //改变小计
                this.list[ind].sub=this.list[ind].count*this.list[ind].price;
                this.total();
            },
            redu:function(ind){
                //数量
                if(this.list[ind].count>1){
                    this.list[ind].count--;
                }
                //小计
                this.list[ind].sub=this.list[ind].count*this.list[ind].price;

                this.total();
            },
            total:function(){
                for(var i=0,tota=0;i<this.list.length;i++){
                    tota+=this.list[i].sub
                }
                this.sum=tota
            }
        }
    })
</script>

效果如下:


Image 5.png

3.选项卡

用v-show实现
样式

<style>
        li{
            list-style: none;
            width: 100px;
            height: 20px;
            border: 1px #000000 solid;
        }
        .txt li{
            float: left;
            cursor: pointer;
        }
        .clearfix:before,
        .clearfix:after{
            content: "";
            display: block;
            clear: both;
        }
    </style>

div部分

<div id="itany">
    <ul class="txt">
        <li v-for="(value,index) in card" @click="chg(index)">{{value.title}}</li>
    </ul>
    <ul>
        <li v-for='(value,index) in card' v-show='value.flag' class="clearfix">{{value.content}}</li>

    </ul>
</div>

JS部分

<script src="../js/vue.js"></script>
<script>
    new Vue({
        el:"#itany",
        data:{
            card:[
                {title:'选项卡1',content:'11111111111111111',flag:true},
                {title:'选项卡2',content:'22222222222222222',flag:false},
                {title:'选项卡3',content:'33333333333333333',flag:false}
            ]
        },
        methods:{
            chg:function(ind){
                for(var i=0;i<this.card.length;i++){
                    this.card[i].flag=false;
                }
                this.card[ind].flag=true;
            }
        }
    })
</script>

效果如图:


Image 7.png

4.display:none和visible:hidden都能把网页上某个元素隐藏起来,但两者有区别:

display:none ---不为被隐藏的对象保留其物理空间,即该对象在页面上彻底消失,通俗来说就是看不见也摸不到。
visible:hidden--- 使对象在网页上不可见,但该对象在网页上所占的空间没有改变,通俗来说就是看不见但摸得到。
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