v-model 双向绑定
修饰符 ：
- .lazy 当在输入框输入内容的时候不立即响应，失焦的时候数据才双向绑定
- .number 输入框内只能输入数字，当输入其它
- .trim
- 文本框应用
- 单选应用
- 复选应用
- 下拉列表应用
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script src="js/vue.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<div id="app">
<h4>文本框</h4>
<input class="box1" v-model.lazy="value">
<input class="box1" v-model.number="value">
{
{
value }}
<h4>单选</h4>
<input type="radio" v-model="sex" id="" value="男" />男
<input type="radio" v-model="sex" id="" value="女" />女
<h4>复选</h4>
城市：
<input type="checkbox" v-model="city" value="长治" />长治
<input type="checkbox" v-model="city" value="运城" />运城
<input type="checkbox" v-model="city" value="太原" />太原
<h4>下拉列表</h4>
<select name="" v-model="items">
<option value="java">java</option>
<option value="html">html</option>
<option value="php">php</option>
</select>
{
{
items }}
</div>
<script type="text/javascript">
new Vue({
el : '#app',
data : {
value : 'd',
sex : '女',
city : ['长治','太原'],
items : 'html'
},
})
</script>
</body>
</html>
v-bind 绑定属性
1.绑定style属性
案例：点击按钮切换文本颜色
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<title></title>
<style type="text/css">
.green{
color: green;
}
.red{
color: #FF0000;
}
.blue{
color : blue;
}
</style>
<script src="js/vue.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<div id="app">
<button type="button" @click="change('red')">红色</button>
<button type="button" @click="change('green')">绿色</button>
<button type="button" @click="change('blue')">蓝色</button>
<p :style="{color : colorType}">{
{
msg }}</p>
</div>
<script type="text/javascript">
new Vue({
el: '#app',
data: {
msg : 'yyqx',
item : 'item',
red : false,
green : false,
blue : false,
colorType : '红色'
},
methods:{
change(name){
this.colorType = name;
}
}
})
</script>
</body>
</html>
2. 绑定class属性
案例：点击按钮切换文本颜色
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<title></title>
<style type="text/css">
.green{
color: green;
}
.red{
color: #FF0000;
}
.blue{
color : blue;
}
</style>
<script src="js/vue.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<div id="app">
<button type="button" @click="red = true">红色</button>
<button type="button" @click="green = true">绿色</button>
<button type="button" @click="blue = true">蓝色</button>
<p :class="{red,green,blue}">{
{
msg }}</p>
</div>
<script type="text/javascript">
new Vue({
el: '#app',
data: {
msg : 'yyqx',
item : 'item',
red : false,
green : false,
blue : false,
},
methods:{
change(name){
if(name == 'red'){
this.red = true;
this.green = false;
this.blue = false;
}else if(name == 'green'){
this.green = true;
this.blue = false;
this.red = false;
}else if(name == 'blue'){
this.blue = true;
this.red = false;
this.green = false;
}
}
}
})
</script>
</body>
</html>
