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How do I make the upload page restrict the types of files that the user can upload, even before they are uploaded?

April 26, 2017files page Restrict types upload uploaded user

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How do I make the upload page restrict the types of files that the user can upload, even before they are uploaded?

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The sample upload page uploadTester.asp has a form validation JavaScript function (“onSubmitForm”) where you can add that test. The filename can be accessed in that function through “formDOMObj.attach1.value”.