iOS动态注入JS屏蔽页面系统默认弹窗

NSString *javaScriptCodeSelected = @"document.documentElement.style.webkitUserSelect='none';";

NSString *javaScriptTouchCodeCallOut = @"document.documentElement.style.webkitTouchCallout='none';";

1. WKWebview注入：

       [webView evaluateJavaScript:javaScriptCode completionHandler:completionHandler];

2. UIWebVIEW注入：

       [webView stringByEvaluatingJavaScriptFromString:javaScriptCode]；

关于这个脚本的说明可参考http://www.css88.com/book/css/webkit/behavior/touch-callout.htm