We have multiple forms with different IDs but same onclick function .
For Like ,
<input type="button" id="a" value="SUBMIT" onclick="fnSubmitForm();">
<input type="button" id="b" value="SUBMIT" onclick="fnSubmitForm();">
<input type="button" id="c" value="SUBMIT" onclick="fnSubmitForm();">
How to find the ID of which submit button is submitted.