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URL Follow Warning Example
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URL Follow Warning

These buttons all launch the same published form. Some of them show a warning when clicked in the published version of the doc on iOS Chrome and iOS Safari:

Open Link?
Are you sure you want to follow the link to coda.io?


This button just opens the URL with no formula. It shows no warning.
Just URL

This button has a formula, which is just the URL in quotes. It shows no warning.
Just URL

This button concatenate()s the URL with “”. It shows the warning.
Concatenated

This button builds a URL string using +. It shows the warning.
Added to with +


Bonus: link to outside domain without formula (no warning):
Link out to Google
With formula (warning):
Link out to Google with Formula

Want to print your doc?
This is not the way.
Try clicking the ⋯ next to your doc name or using a keyboard shortcut (
CtrlP
) instead.