JS与iOS之间的通信 iOS调用JS代码

//获取当期页面的URL

 NSString *url = [_webView stringByEvaluatingJavaScriptFromString:@"document.location.href"];

//获取当期页面的标题

NSString *title= [_webViewstringByEvaluatingJavaScriptFromString:@"document.title"];

//提交表单

 [_webViewstringByEvaluatingJavaScriptFromString:@"document.form[0].submit()"];