(8)vue 表单

一、基础

1.文本

   <div id="vm">
        <input v-model="message" />
        <h1>{{message}}</h1>
    </div>
    <script>
        var vm = new Vue({
            el: '#vm',
            data: {
                message: null
            }
        })
    </script>

 

2.多行文本

    <div id="vm">
        <p style="white-space: pre-line;">{{ message }}</p>
        <br>
        <textarea v-model="message" ></textarea>
    </div>
    <script>
        var vm = new Vue({
            el: '#vm',
            data: {
                message: null
            }
        })
    </script>

 

3.复选框

    <div id="vm">
        <input type="checkbox" id="jack" value="Jack" v-model="checkedNames">
        <label for="jack">Jack</label>
        <input type="checkbox" id="john" value="John" v-model="checkedNames">
        <label for="john">John</label>
        <input type="checkbox" id="mike" value="Mike" v-model="checkedNames">
        <label for="mike">Mike</label>
        <br>
        <span>Checked names: {{ checkedNames }}</span>
    </div>
    <script>
        var vm = new Vue({
            el: '#vm',
            data: {
                checkedNames: []
            }
        })
    </script>

 

4.单选按钮

    <div id="vm">
        <input type="radio" id="one" value="One" v-model="picked">
        <label for="one">One</label>
        <br>
        <input type="radio" id="two" value="Two" v-model="picked">
        <label for="two">Two</label>
        <br>
        <span>Picked: {{ picked }}</span>
    </div>
    <script>
        var vm = new Vue({
            el: '#vm',
            data: {
                picked: ''
            }
        })
    </script>

 

5.选择框

（1）简单

    <div id="vm">
        <select v-model="selected">
            <option disabled value="">请选择</option>
            <option>A</option>
            <option>B</option>
            <option>C</option>
        </select>
        <span>Selected: {{ selected }}</span>
    </div>
    <script>
        var vm = new Vue({
            el: '#vm',
            data: {
                selected: ''
            }
        })
    </script>

（2）多选

<!DOCTYPE html>
<html>
<head>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
    <div id="vm">
        <select v-model="selected" multiple style="width: 50px;">
            <option>A</option>
            <option>B</option>
            <option>C</option>
        </select>
        <br>
        <span>Selected: {{ selected }}</span>
    </div>
    <script>
        var vm = new Vue({
            el: '#vm',
            data: {
                selected: []
            }
        })
    </script>
</body>
</html>

 （3）v-for动态渲染

    <div id="vm">
        <select v-model="selected">
            <option v-for="option in options" v-bind:value="option.value">
                {{ option.text }}
            </option>
        </select>
        <span>Selected: {{ selected }}</span>
    </div>
    <script>
        var vm = new Vue({
            el: '#vm',
            data: {
                selected: 'A',
                options: [
                    { text: 'One', value: 'A' },
                    { text: 'Two', value: 'B' },
                    { text: 'Three', value: 'C' }
                ]
            }
        })
    </script>

 

二、值绑定

 1.复选框

 2.单选按钮

 

 3.选择框的选项

 

三、修饰符

 1 number

自动转数字类型

<input v-model.number="age" type="number">

2.trim

过滤输入空格

<input v-model.trim="msg">

3.lazy

当失去焦点时更新

    <div id="vm">
        <input type="text" v-model.lazy="content">
        <p>{{content}}</p>
    </div>
    <script>
        var vm = new Vue({
            el: '#vm',
            data: {
                content: ''
            },
        })
    </script>

 

posted @ 2020-02-09 09:40  富坚老贼  阅读(154)  评论(0)  编辑  收藏  举报