## 表单
### 基本用法
开发者可以给表单元素指定model属性实现数据的双向绑定。UOkay会根据表单元素的类型自动选择正确的方法来更新元素。
### 文本
~~~
<div id = "app">
<input model = "msg" placeholder="请输入"/>
<div>{{msg}}</div>
</div>
~~~
~~~
var app = new Okay({
ele:'app',
data: {
msg:''
},
})
~~~
### 选择框
~~~
<div id = "app">
<select model = "msg" >
<option value = "你好，世界">中文</option>
<option value = "Hello,World">英文</option>
</select>
<div>{{msg}}</div>
</div>
~~~
### 多行文本
~~~
<div id = "app">
<textarea model = "msg" >
</textarea>
<div>{{msg}}</div>
</div>
~~~
### 单选Radio
~~~
<div id = "app">
<input type="radio" model="gender" name="gender" value = "Man"/>男
<input type="radio" model="gender" name="gender" value = "Woman"/>女
<div>{{gender=='Man'?'男':'女'}}</div>
</div>
~~~
~~~
var app = new Okay({
ele:'app',
data: {
gender:'Man'
},
})
~~~
### 复选框
~~~
<div id = "app">
<input type="checkbox" model="gender" name="gender" value = "Man"/>男
<div>{{gender=='Man'?'男':'女'}}</div>
</div>
~~~
### 复选框多选
~~~
<div id = "app">
<input type="checkbox" model="interest" name="likes[]" value = "篮球"/>篮球
<input type="checkbox" model="interest" name="likes[]" value = "足球"/>足球
<input type="checkbox" model="interest" name="likes[]" value = "乒乓球"/>乒乓球
<div>{{interest|join}}</div>
</div>
~~~
~~~
var app = new Okay({
ele:'app',
data: {
interest:[]
},
filters: {
join(arr) {
return arr.join(",")
}
}
})
~~~
