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Code Component for printing stopped working; popup closes fast

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Posted on by Community Power Pla... Microsoft Employee

I've successfully created a Code Component to print from a screen a few months ago. The user clicks a button to launch the Print dialog. It formats and prints data from the screen. All good.

Just recently, when using Edge, when I click the button, the print dialog flashes open then closes instantly. However, it works in IE, Chrome, and Firefox.

Any ideas?

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Power Apps Pro Dev & ISV

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cchannon 4,702 Moderator on at

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Two options:
Debug and find the JS operation that is not playing nicely with Edge any more, then branch that section based on current browser (navigator.userAgent works well, but no approach is perfect) or,
Switch to New Edge and pretend none of this ever happened.

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Community Power Pla... Microsoft Employee on at

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Resolver. Thanks for your reply.
I AM using the chromium-based Edge browser. (Microsoft EdgeVersion 89.0.774.54 (Official build) (64-bit)) That's what's odd. Chrome works fine.
So, it must be something in the TypeScript. There is a line that looks suspicious:
popupWin.document.close();

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cchannon 4,702 Moderator on at

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There are a million JS commands that could cause browser incompatibility issues. document.close seems like an unlikely one, but I have been wrong in my career as often as I've been right, so if it looks to you like a good suspect, go ahead and dig in.

That said, I would also advise that TS (and your react app, if you have one) get rendered as JS before the code is run on your model driven app, so don't google search your TS; it could lead you astray. Debug the compiled JS step by step in the browser until you find the line that is causing your problem then search that function/operation to see if you can find something more browser-agnostic.

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Community Power Pla... Microsoft Employee on at

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It was me 😞
Missed the right bracket at the end of this line:
<body onload="window.print();window.close()">;

Evidently, Edge handled this error differently than Chrome, Firefox, and Internet Explorer.

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