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Installs JavaScript callback into web viewer.

Component Version macOS Windows Linux Server iOS SDK
WebView 1.3 ✅ Yes ✅ Yes ❌ No ❌ No ❌ No
MBS( "WebView.InstallCallback" )




Installs JavaScript callback into web viewer.
This function needs to be called one time to enable JavaScript to reach out from the web viewer to run a FileMaker Script.
One strategy is to call this function on start-up before any WebViewers have been displayed.

To call back from Javascript to FileMaker, you assign a string to the window.status property:


The Parameter part can contain ":". Filename must include file extensions so FileMaker finds the database file.

You can also call it within a link with "javascript:window.status='Filename:Scriptname:Parameter'". Like this: href="javascript:window.status='callbacks.fp7:Another Script:Hello World'".
Does not work currently with Internet Explorer 10 on Windows.

Not supported for WebKit 2.x (FileMaker 16 Mac), but works in FileMaker 16, when using a Web Viewer created using WebView.Create.

For FileMaker 16, please check WebView.AddScriptMessageHandler function as a replacement.

Note for Windows: For Windows this function is only supported in FileMaker Pro when using Internet Explorer as engine behind the Web Viewer, but not when Microsoft Edge/Chrome engine is used. But the functions should still work if with Web Viewers created via plugin using WebView.Create and WebView.CreateWithControl as those still use Internet Explorer.


Install Callbacks


See also

Release notes

Example Databases

Blog Entries

Created 18th August 2014, last changed 31st July 2019

WebView.HasOnlySecureContent - WebView.InstallMultiFileOpenDialog

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