有相当多的Chrome网络应用看起来只不过是我们最喜欢的网站的“美化”快捷方式，但这就是它们的全部，还是它们还有更多？今天的超级用户问答有答案。

今天的问答环节是由SuperUser提供的，SuperUser是Stack Exchange的一个分支，是一个由社区驱动的问答网站分组。

问题

超级用户读者kolypto想知道安装复制网站的Chrome应用程序有什么好处（如果有的话）：

There are a number of Chrome apps that seem to be nothing more than shortcuts to various web services. Some examples are:

• Google Play Music
• Google Docs
• Google Calendar
• Google Maps
• Evernote

They do not seem to add or modify any features outside of placing a shortcut on the “Apps” page. Are there any reas*** for installing these? What do they actually do?

这些类型的Chrome应用程序仅仅是“美化”了的快捷方式，还是有比我们知道的更多的快捷方式？

答案

超级用户贡献者joejoe31b为我们提供了答案：

This Google Developer page details the differences between hosted and packaged apps. In a nutshell, the main difference between them is that hosted apps are the ones you are thinking of (ones that display a hosted website), and packaged apps are apps that are more self-contained (and include most, if not all, of their HTML and CSS files, or resources).

On the WrongPlanet forums, there was an interesting page here that describes some of the reas*** why a developer might make a hosted app. One reason that ‘Apple in my Eye‘ pointed out was:

• It may be a website technically, but it functi*** indistinguishably from a normal non-web browser app. Also, turning it into a shortcut strips away all the irrelevant browser controls so that it looks like a normal app window.

‘NeantHumain‘ continued the discussion by saying:

• Google Chrome apps are just web apps written in HTML5 that take advantage of new features like: canvas, video, SVG, WebGL, and a bunch of new APIs that can be accessed through JavaScript. They can be used for everything from geo-location, offline storage, and/or web workers for a sort of multithreading.

So, in other words, it seems that more goes on in the background of a hosted app than just displaying a webpage. It allows the developer to extend the functionality of the website, and bypass some of the restricti*** that a normal website may encounter.

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