# 智能的 App Banner - Smart App Banners

Safari 在iOS6设备里有一个智能的App Banner特性，添加一行代码在你的网站里，如果用户在iPhone或iPad等iOS设备上，用Safari浏览器打开网站，他将在顶部看到如下的内容：

![Smart App Banner](https://developer.apple.com/library/ios/documentation/AppleApplications/Reference/SafariWebContent/Art/smartappbanner.png)

这行代码就是：

```
<meta name="apple-itunes-app" content="app-id=myAppStoreID, affiliate-data=myAffiliateData, app-argument=myURL">
```

app-id 就是你的AppStore上的id 号，affiliate-data 与 app-argument 是可选的两个参数

添加后，他会智能的判断你的手机上是否安装有此APP，如果有则为打开按钮，没有则出现一个AppStore下载链接。

*如果点过关闭显示\[x]后，它将不再显示，除非你去设置中清除Safari Cookies*


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://www.doruby.com/mobile/tips-1/zhi-neng-de-app-banner-smart-app-banners.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.