关于html代码中name为apple-itunes-app的meta标签

有些网站看它html网页源码会有类似下面的一段代码在head中：

<meta name="apple-itunes-app" content="app-id=569706824" />

一开始我也百思不得其解，查了下才知道

原文：http://segmentfault.com/q/1010000000171226

这个标签是告诉iphone的safari浏览器，这个网站对应的app是什么，然后在页面上面显示一个下载banner

参考：http://developer.apple.com/library/io...

https://developer.apple.com/library/ios/documentation/AppleApplications/Reference/SafariWebContent/PromotingAppswithAppBanners/PromotingAppswithAppBanners.html

Safari has a new Smart App Banner feature in iOS 6 and later that provides a standardized method of promoting apps on the App Store from a website, as shown in Figure 7-1.