//在使用到js交互的控制器里面 要导入 JavaScriptCore
import JavaScriptCore
在UIWebViewDelegate 的代理方法里面写如下
func webViewDidFinishLoad(webView: UIWebView) {
let context = webView.valueForKeyPath("documentView.webView.mainFrame.javaScriptContext")as!JSContext
jsContext = context
js端调用本地方法 这里用block来实现
let someMethon: @convention(block) AnyObject -> AnyObject = { obj in
print(obj)
return ""
}
jsContext!.setObject(unsafeBitCast(someMethon, AnyObject.self), forKeyedSubscript: "someMethon")
}
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