v-model 指令在表单控件元素上创建双向数据绑定，下面一一进行示例解释。
1、v-model 双向绑定文本
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<!doctype html>
<html>
<head lang="en">
<meta charset="utf-8">
<title></title>
<script type="text/javascript" src="vue.js"></script>
</head>
<body>
<div id="app">
<input v-model="message" placeholder="edit me">
<p>message is: {{ message }}</p>
</div>
</body>
<script>
var vm = new vue({
el:"#app",
data: {
message: '绑定文本'
}
})
</script>
</html>
输出结果：
2、v-model 双向绑定多行文本，与上面的例子相似。
<!doctype html>
<html>
<head lang="en">
<meta charset="utf-8">
<title></title>
<script type="text/javascript" src="vue.js"></script>
</head>
<body>
<div id="app">
<<span>multiline message is:</span>
<p style="white-space: pre">{{ message }}</p>
<br>
<textarea v-model="message" placeholder="add multiple lines"></textarea>
</div>
</body>
<script>
var vm = new vue({
el:"#app",
data: {
message: '绑定多行文本'
}
})
</script>
</html>
输出结果：
3、v-model 绑定复选框
<!doctype html>
<html>
<head lang="en">
<meta charset="utf-8">
<title></title>
<script type="text/javascript" src="vue.js"></script>
</head>
<body>
<div id="app">
<input type="checkbox" id="checkbox" v-model="checked">
<label for="checkbox">{{ checked }}</label>
</div>
</body>
<script>
var vm = new vue({
el:"#app",
data: {
checked: 'true'
}
})
</script>
</html>
输出结果：选中为true 不选中则为false
<!doctype html>
<html>
<head lang="en">
<meta charset="utf-8">
<title></title>
<script type="text/javascript" src="vue.js"></script>
</head>
<body>
<div id="app">
<input type="checkbox" id="jack" value="刘二狗" v-model="checkednames">
<label for="jack">jack</label>
<input type="checkbox" id="john" value="张麻子" v-model="checkednames">
<label for="john">john</label>
<input type="checkbox" id="mike" value="小狗子" v-model="checkednames">
<label for="mike">mike</label>
<br>
<span>checked names: {{ checkednames }}</span>
</div>
</body>
<script>
var vm = new vue({
el:"#app",
data: {
checkednames: []
}
})
</script>
</html>
输出结果：
4、v-model 绑定单选按钮
<!doctype html>
<html>
<head lang="en">
<meta charset="utf-8">
<title></title>
<script type="text/javascript" src="vue.js"></script>
</head>
<body>
<div id="app">
<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>
</body>
<script>
var vm = new vue({
el:"#app",
data: {
picked: ''
}
})
</script>
</html>
输出结果：
5、v-model 绑定下拉列表
<!doctype html>
<html>
<head lang="en">
<meta charset="utf-8">
<title></title>
<script type="text/javascript" src="vue.js"></script>
</head>
<body>
<div id="app">
<select v-model="selected">
<option>a</option>
<option>b</option>
<option>c</option>
</select>
<span>selected: {{ selected }}</span>
</div>
</body>
<script>
var vm = new vue({
el:"#app",
data: {
selected: ''
}
})
</script>
</html>
输出结果：
多选列表
<!doctype html>
<html>
<head lang="en">
<meta charset="utf-8">
<title></title>
<script type="text/javascript" src="vue.js"></script>
</head>
<body>
<div id="app">
<select v-model="selected" multiple style="width: 50px">
<option>a</option>
<option>b</option>
<option>c</option>
</select>
<br>
<span>selected: {{ selected }}</span>
</div>
</body>
<script>
var vm = new vue({
el:"#app",
data: {
selected: []
}
})
</script>
</html>
输出结果：
6、动态选项，用 v-for 渲染：
<!doctype html>
<html>
<head lang="en">
<meta charset="utf-8">
<title></title>
<script type="text/javascript" src="vue.js"></script>
</head>
<body>
<div id="app">
<select v-model="selected">
<option v-for="option in options" v-bind:value="option.value">
{{ option.text }}
</option>
</select>
<span>selected: {{ selected }}</span>
</div>
</body>
<script>
var vm = new vue({
el:"#app",
data: {
selected: 'a',
options: [
{ text: 'one', value: 'a' },
{ text: 'two', value: 'b' },
{ text: 'three', value: 'c' }
]
}
})
</script>
</html>
输出结果：
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