【mac之javascriptcore】
The JavaScriptCore（Webkit's Javascript engine） Framework allows you to evaluate JavaScript programs（1） from within a C-based program. It also lets you insert custom objects to the JavaScript environment（2）.
Reference：https://developer.apple.com/library/mac/#documentation/Carbon/Reference/WebKit_JavaScriptCore_Ref/_index.html
遗憾的是，iOS下无法使用此API。
