javascript - Check to see if a HTML button gets released -

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so want able tell when html button no longer clicked/touched can change boolean true false. 

<input id="clickme" type="button" value="click start." onclick="playit();" />

i way see if it's still pressed work well.

just add onmouseup button:

<input id="clickme" type="button" value="click start." onmouseup="playit();">

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