Vue之实现表单数据的自动收集

使用v-model指令对表单数据自动收集

  1. text/textarea
  2. radio
  3. checkbox
  4. select

实例

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <!--view-->
    <div id="app">
        <form action="/×××" @submit.prevent="handleSubmit">
            <span>用户名:</span>
            <input type="text" v-model="username" /><br>

            <span>密码:</span>
            <input type="password" v-model="pwd" /><br>

            <span>性别:</span>
            <input type="radio" id="female" value="女" v-model="sex" /><label for="female">女</label>
            <input type="radio" id="male" value="男" v-model="sex" /><label for="male">男</label><br>

            <span>爱好:</span>
            <input type="checkbox" id="basketbal" value="basketbal" v-model="likes"><label for="basketbal">篮球</label>
            <input type="checkbox" id="football" value="football" v-model="likes"><label for="football">足球</label>
            <input type="checkbox" id="pingpong" value="pingpong" v-model="likes"><label for="pingpong">乒乓球</label><br>

            <span>城市:</span>
            <select v-model="cityId">
                <option value="">未选择</option>
                <option v-for="(city, index) in cities" :key="index" :value="city.id">{{city.name}}</option>
            </select><br>

            <span>介绍:</span>
            <textarea rows="10" v-model="desc"></textarea><br>

            <input type="submit" value="注册" />
        </form>
    </div>

    <!--1.引入Vue-->
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script type="text/javascript">
        // 2.创建Vue实例
        const vm = new Vue({
            // 配置对象
            el: '#app',  // element:选择器
            data: {      // 数据(model)
                username: '',
                pwd: '',
                sex: '女',
                likes: [],
                cities: [
                    {id: 1, name: 'BJ'},
                    {id: 2, name: 'SH'},
                    {id: 3, name: 'GZ'},
                    {id: 4, name: 'SZ'}
                ],
                cityId: '',
                desc: ''
            },
            methods: {
                handleSubmit () {
                    console.log(this.username, this.pwd)
                }
            }
        })
    </script>
</body>
</html>

在这里插入图片描述
1.点击注册按钮时,不提交表单

<form action="/×××" @submit.prevent="handleSubmit">

2.单选框默认值
单选框默认值默认为“女”,也可修改默认值。即:修改data中的sex值。如果不设定默认值,可以这样设置(sex设为空):

data{
  sex: ''
}

3.复选框默认值
复选空没有设置默认人。可以这样设置默认值:

data{
  likes: ['football']
}

【注意】:单选框、复选框、下拉列表的默认值设定必须和value中对应的值一样

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转载自blog.csdn.net/Lucky_Boy_Luck/article/details/103434957