在没有UIWebView的情况下运行JavaScript? [英] Run javascript without UIWebView possible?

问题描述

是否可以在不使用 UIWebView 的情况下运行一些javascript代码(也许将 NSString 作为输入)?我想在一个单独的线程中运行此代码，所以不可能使用UIWebView，并且我真的不想呈现任何内容，只需返回结果即可.

Is it possible to run some javascript code (having perhaps an NSString as input) without using a UIWebView? I would like to run this code in a separate thread so UIWebView is not possible and I don't really want to render anything, just get back the results.

推荐答案

我还没有尝试过，但这是一个主意:

I have not tried this, but here is one idea:

编写代码以分配一个空的 UIWebView ，但不会将其添加为任何子视图，而只需直接调用

Write code to allocate an empty UIWebView but doesn't add it as a subview anywhere, and just directly call - (NSString *)stringByEvaluatingJavaScriptFromString:(NSString *)script on your javascript.

然后使用 NSOperation 并行运行它.

有什么原因可能对您不起作用?我认为这样可以避免为 UIWebView 显示任何内容.

Any reason that might not work for you? I think it would avoid displaying anything for the UIWebView.

作为一个旁注，我想不出您可以在javascript中做的任何事情，而这些事情您不能直接在Objective-C中做得更快.除了解析您从外部获取的javascript之外，根据具体情况，Apple可能会认为这是不可以的.

As a side note, I can't think of anything you can do in javascript that you can't do more quickly directly in Objective-C. Except maybe parsing javascript that you get externally, which may be considered a no-no by Apple, depending on the details.

根据您的目标进行猜测:如果您想解析JSON服务器回复，我建议托管在Google代码上的json-framework库.它具有一个不错的界面，并且易于学习和集成.

Guessing at your goals: If you want to parse a JSON server reply, I recommend the json-framework library hosted on google code. It has a nice interface, and it is surprisingly easy to learn and integrate.

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