在 iOS 应用程序中嵌入 JavaScript 引擎
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Embed a JavaScript engine in an iOS application
提问by dennycd
I wonder if anyone has successfully ported a javascript engine/interpreter to iOS. I'm writing an iPhone game that I would like to use Javascript as the high-level scripting language (AI, gameplay, etc.), but to do that, I need to compile the JS engine into a static library and link it against my objectiveC program for iPhone OS. There are some candidate JS engine I'm looking at but I couldn't find any successful cases for doing that.
我想知道是否有人成功地将 javascript 引擎/解释器移植到 iOS。我正在编写一个 iPhone 游戏，我想使用 Javascript 作为高级脚本语言（AI、游戏玩法等），但要做到这一点，我需要将 JS 引擎编译成一个静态库并将其链接到我的 iPhone 操作系统的objectiveC 程序。我正在寻找一些候选 JS 引擎，但我找不到任何成功的案例。
Here're the js engine I was hoping to use for iOS
这是我希望用于 iOS 的 js 引擎
- google's V8 javascript engine
- mozilla's SpiderMonkey
- 谷歌的 V8 javascript 引擎
- mozilla 的 SpiderMonkey
The alternative is to use UIWebView'sJavascript callback interface, but that requires loading the entire UIWebViewinto memory and the experiences I heard is that it is usually slow in performance.
另一种方法是使用UIWebView'sJavascript 回调接口，但这需要将整个加载UIWebView到内存中，我听到的经验是它通常性能很慢。
Appreciate if anyone had similar experiences of do this or know any references for that!
不胜感激，如果有人有类似的经验这样做或知道任何参考！
[UPDATED] as Kostis mentioned, Apple introduced JavascriptCorein WWDC 2013
[更新] 正如 Kostis 提到的，Apple在 WWDC 2013 中引入了JavascriptCore
采纳答案by Kostis
For future viewers, now there is the JavaScriptCore framework, introduced in the new iOS 7. It does magic! Wrapping, unwrapping values from/to JS/Objective-C, calling functions, callbacks, everything!
对于未来的观众，现在有了 JavaScriptCore 框架，它在新的 iOS 7 中引入。它真的很神奇！包装，从/向 JS/Objective-C 解包值，调用函数，回调，一切！
Unfortunately, documentation is really poor at the moment. You can find a presentation from the WWDC 2013 eventand some more info in the header files (cmd+click on the header file name in Xcode). There are also some tutorial around the internets which just copy what the guy in the WWDC presentation does.
不幸的是，目前文档确实很差。您可以在WWDC 2013 活动中找到演示文稿，并在头文件中找到更多信息（cmd+单击 Xcode 中的头文件名）。互联网上也有一些教程，它们只是复制 WWDC 演示文稿中的人所做的。
I've used it for one of my projects, it's really powerful. The only think I didn't like is that it passed objects from JS to ObjC by value, i.e. reference was lost. There might be a workaround for this, but I couldn't find anything without proper documentation.
我已经将它用于我的一个项目，它真的很强大。我唯一不喜欢的想法是它通过值将对象从 JS 传递到 ObjC，即引用丢失了。可能有一个解决方法，但如果没有适当的文档，我找不到任何东西。
Hope this will help someone :)
希望这会帮助某人:)
回答by Johannes Fahrenkrug
There are two projects you might be interested in:
您可能感兴趣的两个项目：
It is absolutely possible to build and ship a JavaScript engine with your iOS app, see http://www.phoboslab.org/log/2011/04/ios-and-javascript-for-real-this-time. Titanium does that, too: https://github.com/appcelerator/webkit_titanium/tree/master/Source/JavaScriptCore. Also see http://www.phoboslab.org/log/2011/06/javascriptcore-project-files-for-ios.
绝对有可能使用您的 iOS 应用程序构建和发布 JavaScript 引擎，请参阅http://www.phoboslab.org/log/2011/04/ios-and-javascript-for-real-this-time。Titanium 也这样做：https: //github.com/appcelerator/webkit_titanium/tree/master/Source/JavaScriptCore。另请参阅http://www.phoboslab.org/log/2011/06/javascriptcore-project-files-for-ios。
I've also made a small app that shows how to use JSC on iOS: https://github.com/jfahrenkrug/AddressBookSpy
我还制作了一个小应用程序，展示了如何在 iOS 上使用 JSC：https: //github.com/jfahrenkrug/AddressBookSpy
Enjoy.
享受。
回答by Nik
回答by ccxvii
If you eventually want to port your game to something other than iOS (or you have other reasons to avoid Apple's proprietary interfaces) you can use MuJS. It's a small library providing a JavaScript interpreter that is easy to embed and extend.
如果您最终想将您的游戏移植到 iOS 以外的其他平台（或者您有其他理由避免使用 Apple 的专有接口），您可以使用MuJS。它是一个小型库，提供易于嵌入和扩展的 JavaScript 解释器。
