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# bi.navigation
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## 导航栏控件,[BI.Widget](/core/widget.md)
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{% method %}
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[source](https://jsfiddle.net/fineui/ubsren48/)
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{% common %}
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```javascript
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BI.createWidget({
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element: "#wrapper",
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type: "bi.navigation",
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tab: {
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height: 30,
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items: [{
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once: false,
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text: "后退",
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value: -1
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}, {
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once: false,
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text: "前进",
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value: 1
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}]
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},
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cardCreator: function(v) {
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return BI.createWidget({
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type: "bi.label",
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cls: "layout-bg" + BI.random(1, 8),
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text: "第" + v + "页"
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})
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}
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})
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```
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{% endmethod %}
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## API
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##### 基础属性
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| 参数 | 说明 | 类型 | 可选值 | 默认值
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| :------ |:------------- | :-----| :----|:----
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| direction | 控件位置 | string | top,bottom,left,right,custom | "bottom"|
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| single | 是否为单页 | boolean | true,false | true |
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| defaultShowIndex | 是否默认显示 |boolean | true,false | true |
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| tab | tab页元素 | boolean | true,false | true |
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| logic | | object | | {dynamic:true} |
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| cardCreator | 面板构造器 | function | — | v |
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| afterCardCreated | 面板构造之后 | function | — | — |
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| afterCardShow | 面板显示之后 | function | —| — |
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## 对外方法
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| 名称 | 说明 | 回调参数
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| :------ |:------------- | :-----
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| render | 渲染组件 | — |
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| mounted | 挂载组件 | —|
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| afterCardCreated | 创建卡导航页页之后 | v |
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| afterCardShow | 导航页展示之后 | v |
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| setSelect | 设置选中的index | v |
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| getSelect | 获取选中的index| —|
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| getSelectedCard | 获取选中的导航页| —|
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| populate | 刷新列表 | items |
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| setValue | 设置value值 | value |
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| getValue | 获取被选中的值 |—|
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| empty| 清空组件|—|
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| destroy| 销毁组件|—|
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---
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