#### `picker多级联动`
[预览](https://aui-js.github.io/aui/pages/api/plugs/picker.html) </br>
参数 | 类型 | 描述 | 默认值 | 必选
---- | ----- | ------ | ----- | ----
warp | string | 父容器元素 | 'body' | 否
title | string | 标题 | '' | 否
layer | number | 控制几级联动 | 1 | 否
data | arr | 数据 如：[{text: '', adcode: '', children: [{text: '', adcode: ''}]}] | [] | 否
````html
<link rel="stylesheet" type="text/css" href="https://aui-js.github.io/aui/static/css/aui.min.css"/>
<link rel="stylesheet" type="text/css" href="https://aui-js.github.io/aui/static/css/aui.picker.css"/>
<script type="text/javascript" src="https://aui-js.github.io/aui/static/js/aui.min.js"></script>
<script type="text/javascript" src="https://aui-js.github.io/aui/static/js/aui.picker.js"></script>
````
> 示例：
````javascript
aui.picker.open({
title: '选择区域',
layer: 3,
data: cityData, //城市数据
select: function(ret){
console.log(ret);
}
},function(ret){
console.log(ret);
if(ret.status == 1){
aui.picker.close(function(){
aui.alert({msg: ret.data.text + " " + ret.data.children.text + ' ' + ret.data.children.children.text});
});
}
})
````
