``` html
<u-input placeholder="普通输入框"></u-input>
```

``` html
<u-input placeholder="加密输入框"></u-input>
```

``` html
<u-input value="可清除输入框" clearable></u-input>
```

``` html
<u-input size="huge" placeholder="大输入框"></u-input>
```

``` html
<u-input size="medium" placeholder="中等输入框"></u-input>
```

``` html
<u-input size="small" placeholder="小输入框"></u-input>
```

``` html
<u-input prefix="search" clearable size="normal medium" placeholder="搜索框"></u-input>
```

``` html
<u-input suffix="search" clearable size="normal medium" placeholder="搜索框"></u-input>
```
