好比iOS中內嵌H5頁面，咱們不要長按出現複製，放大鏡之類的功能

- (void)webViewDidFinishLoad:(UIWebView *)webView{

    [self.webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.style.webkitUserSelect='none';"];

    [self.webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.style.webkitTouchCallout='none';"];

}