Is it possible to detect whether text has been cut and pasted into a textbox on a webpage?

Question

Is it possible using some sort of client side code to detect cut and paste?

The only solution I can think of is to constantly get the text length and if it changes drastically over a certain period, then assume text was pasted.

what amount of text are we talking, cause I type pretty fast :) — Doon, Aug 06 '10 at 02:36

score 1 · Answer 1 · edited May 23 '17 at 10:33

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Yes. Add a keydown event listener and look for keyCode 86 and e.ctrlKey == true. It looks like this has been asked and answered in this post and this post

edited May 23 '17 at 10:33

Community

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answered Aug 06 '10 at 02:37

umop

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If the purpose is just to detect if a text was pasted i will use both suggested ways: the one from umop, watching when the V key and control key are pressed simultaneously and if some text have incremented drastically... – Garis M Suero Aug 06 '10 at 02:44
what if you go Edit - Paste from the menu though? – Diskdrive Aug 06 '10 at 02:44
i paste with the middle mouse button – dotjoe Aug 06 '10 at 02:59
Found another, more exhaustive post. Edited my answer to suit. – umop Aug 06 '10 at 03:29

score 1 · Accepted Answer · answered Aug 06 '10 at 02:52

It seems like the only way you'd know if the text changed through all the crazy ways text can be inserted into a textbox might be to monitor the value in an Interval...checking for when the next interval value was different from the previous...that would detect any form of change but it isn't a very neat solution (seems overkill)...

Is it possible to detect whether text has been cut and pasted into a textbox on a webpage?

2 Answers2