“eval” for Objective-C code

问题

Does a method like eval exist in Objective-C as in Javascript, Ruby, PHP, or Python?

I use PhoneGap and I want to create a window which is specific for each of my projects, and I can't use an HTML file. So I want to call a method from JavaScript and, with one of the arguments being Objective-C code to be interpreted.

回答1:

Sorry, there is no "eval" method in Objective-C, and the iPhone license specifically prohibits interpreted code. You can specify a xib/nib file by name, however.

回答2:

Try this

NSString *returnOfJavascriptExecution = [webView stringByEvaluatingJavaScriptFromString:@"[your javascript code]"];

来源：https://stackoverflow.com/questions/2550897/eval-for-objective-c-code