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objective c - JavaScript alert() not working in embedded WebView

问题描述:

When embedding WebView in an application and loading html-pages in it, JavaScripts alert()/confirm()/etc. do not work.

Looking around in the documentation, there are no related settings in WebPreferences - the only thing that looks related are WebUIDelegates -(void)webView:runJavaScriptAlertPanelWithMessage:initiatedByFrame: etc ... but implementing these would mean writing custom dialogs for these which seems pretty redundant...

I don't need a custom WebUIDelegate and would like to continue just using the default one.

Surely there has to be some way to simply enable alert() et al, but how?

网友答案:

Here is a sample code that will do the basic job. You need however to make sure that this object is registered as a UIDelegate for the WebView.

- (void)webView:(WebView *)sender runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WebFrame *)frame {
    NSAlert *alert = [[NSAlert alloc] init];
    [alert addButtonWithTitle:@"OK"];
    [alert setMessageText:message];
    [alert runModal];
    [alert release];
}
网友答案:

It turns out there is simply no default WebUIDelegate set - Apple seems to expect everyone to implement the same basic features for themselves.

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