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text area height


freelance84

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I've noticed on some web pages (eg Facebook), the size of text areas can start at 2 lines high but then as the user inputs more text the height can grow to accommodate the text.

 

How is this done?

 

<textarea style="max-height:50px;" name="additional_comment" cols="20" rows="1"></textarea>

 

I assumed it would be a simple max-height job but, no.

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