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Editorial Team
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Asked: 2026-05-16T06:02:27+00:00

I’ve been researching about Flex and it seems that it’s possible to use JavaScript

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I’ve been researching about Flex and it seems that it’s possible to use JavaScript to interact with the Flash component. What I would like to know is if there are any security issues when doing this versus just building everything within the SWF?

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1 Answer

  1. Editorial Team

    You have to explicitly define in your Flex code which Javascript functions to respond to.

    Look at ExternalInterface.addCallback()

    As for Security: there are mechanisms in place to keep things ‘secure’.

    For local content running in a browser, calls to the ExternalInterface.addCallback() method work only if the SWF file and the containing web page are in the local-trusted security sandbox.

    For more info, read through the API

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