表单控制

checkbox选中

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>checkbox</title>
    <script src="https://cdn.bootcdn.net/ajax/libs/vue/2.6.12/vue.min.js"></script>
</head>
<body>
<div id="box">
    <input type="text" placeholder="请输入用户名："><br>
    <input type="password" placeholder="请输入密码："><br>
    <input type="checkbox" v-model="radio">记住用户名
</div>
</body>
<script>
    var vm = new Vue({
        el: '#box',
        data: {
            myText: '',
            textBig: '',
            radio: false,
        },
    })
</script>
</html>

单选

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>单选</title>
    <script src="https://cdn.bootcdn.net/ajax/libs/vue/2.6.12/vue.min.js"></script>
</head>
<body>
<div id="box">
    <input type="radio" v-model="radio" value="男">男
    <input type="radio" v-model="radio" value="女">女
    <input type="radio" v-model="radio" value="保密">保密
    <br><br>您选择的性别：{{radio}}
</div>
</body>
<script>
    var vm = new Vue({
        el: '#box',
        data: {
            radio: '',
        },

    })
</script>
</html>

多选

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>多选</title>
    <script src="https://cdn.bootcdn.net/ajax/libs/vue/2.6.12/vue.min.js"></script>
</head>
<body>
<div id="box">

    <input type="checkbox" v-model="many" value="篮球">篮球
    <input type="checkbox" v-model="many" value="足球">足球
    <input type="checkbox" v-model="many" value="棒球">棒球
    <input type="checkbox" v-model="many" value="桌球">桌球
    <br><br>您喜欢的球类：{{many}}
</div>
</body>
<script>
    var vm = new Vue({
        el: '#box',
        data: {
            many: [],
        },
    })
</script>
</html>

购物车案例 - 结算

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>购物车结算</title>
    <script src="https://cdn.bootcdn.net/ajax/libs/vue/2.6.12/vue.min.js"></script>
    <style>
        table, td {
            border: 1px solid black;
            text-align: center;
        }
    </style>
</head>
<body>
<div id="box">
    <table>
        <tr>
            <td>商品名称</td>
            <td>价格</td>
            <td>数量</td>
            <td>选择</td>
        </tr>
        <tr v-for="item in dataList">
            <td>{{item.name}}</td>
            <td>{{item.price}}</td>
            <td>{{item.number}}</td>
            <td><input type="checkbox" :value="item" v-model="checkGroup"></td>
        </tr>
    </table>
    <br>已选商品：{{checkGroup}}
    <br>总价：{{getPrice()}}
</div>
</body>
<script>
    var vm = new Vue({
        el: '#box',
        data: {
            dataList: [
                {name: '今瓶没', price: 99, number: 2},
                {name: '西柚记', price: 59, number: 1},
                {name: '水壶转', price: 89, number: 5},
            ],
            checkGroup: [],
        },
        methods: {
            getPrice() {
                let sum_price = 0
                for (i in this.checkGroup) {    // 这里的 i 是索引
                    sum_price += this.checkGroup[i]['number'] * this.checkGroup[i]['price']
                }
                return sum_price
            }
        }
    })
</script>
</html>

购物车案例 - 全选/全不选

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>全选/全不选</title>
    <script src="https://cdn.bootcdn.net/ajax/libs/vue/2.6.12/vue.min.js"></script>
    <style>
        table, td {
            border: 1px solid black;
            text-align: center;
        }
    </style>
</head>
<body>
<div id="box">
    <table>
        <tr>
            <td>商品名称</td>
            <td>价格</td>
            <td>数量</td>
            <td>全选/全不选<input type="checkbox" v-model="allChecked" @change="checkAll"></td>
        </tr>
        <tr v-for="item in dataList">
            <td>{{item.name}}</td>
            <td>{{item.price}}</td>
            <td>{{item.number}}</td>
            <td><input type="checkbox" :value="item" v-model="checkGroup" @change="checkOne"></td>
        </tr>
    </table>
    <br>已选商品：{{checkGroup}}
    <br>总价：{{getPrice()}}
</div>
</body>
<script>
    var vm = new Vue({
        el: '#box',
        data: {
            dataList: [
                {name: '今瓶没', price: 99, number: 2},
                {name: '西柚记', price: 59, number: 1},
                {name: '水壶转', price: 89, number: 5},
            ],
            checkGroup: [],
            allChecked: false,
        },
        methods: {
            getPrice() {
                let sum_price = 0
                for (i in this.checkGroup) {    // 这里的 i 是索引
                    sum_price += this.checkGroup[i]['number'] * this.checkGroup[i]['price']
                }
                return sum_price
            },
            checkAll() {
                if (this.checkGroup.length > 0) {
                    this.checkGroup = []
                } else {
                    this.checkGroup = this.dataList
                }
            },
            checkOne() {
                // if (this.checkGroup.length === this.dataList.length) {
                //     this.allChecked = true
                // } else {
                //     this.allChecked = false
                // }
                this.allChecked = this.checkGroup.length === this.dataList.length;
            }
        }
    })
</script>
</html>

购物车案例 - 数量加减

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>控制加减</title>
    <script src="https://cdn.bootcdn.net/ajax/libs/vue/2.6.12/vue.min.js"></script>
    <link href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.5.3/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="row">
    <div id="box" class="col-md-4 offset-md-1 text-center mt-5 ">
        <table class="table table-bordered">
            <thead>
            <tr>
                <th scope="col">商品名称</th>
                <th scope="col">单价</th>
                <th scope="col">数量</th>
                <th scope="col">全选/全不选 <input type="checkbox" v-model="allChecked" @change="checkAll"></th>
            </tr>
            </thead>
            <tbody>
            <tr v-for="item in dataList">
                <td>{{item.name}}</td>
                <td>{{item.price}}</td>
                <td>
                    <button class="btn link btn-sm" @click="reduceNum(item)">-</button>
                    {{item.number}}
                    <button class="btn link btn-sm" @click="item.number++">+</button>
                </td>
                <td><input type="checkbox" :value="item" v-model="checkGroup" @change="checkOne"></td>
            </tr>
            <tr class="text-left">
                <td colspan="4">总价：{{getPrice()}}
            </tr>
            </tbody>
        </table>
    </div>
</div>
</body>
<script>
    var vm = new Vue({
        el: '#box',
        data: {
            dataList: [
                {name: '今瓶没', price: 99, number: 1},
                {name: '西柚记', price: 59, number: 1},
                {name: '水壶转', price: 89, number: 1},
            ],
            checkGroup: [],
            allChecked: false,
        },
        methods: {
            getPrice() {
                let sum_price = 0
                for (i in this.checkGroup) {
                    sum_price += this.checkGroup[i]['number'] * this.checkGroup[i]['price']
                }
                return sum_price
            },
            checkAll() {
                if (this.checkGroup.length > 0) {
                    this.checkGroup = []
                } else {
                    this.checkGroup = this.dataList
                }
            },
            checkOne() {
                // if (this.checkGroup.length === this.dataList.length) {
                //     this.allChecked = true
                // } else {
                //     this.allChecked = false
                // }
                this.allChecked = this.checkGroup.length === this.dataList.length;
            },
            reduceNum(item) {
                if (item.number === 1) {
                    item.number = 1
                } else {
                    item.number--
                }
            }
        }
    })
</script>
</html>

posted @ 2022-04-12 18:33  那就凑个整吧  阅读(28)  评论(0)  编辑  收藏  举报