javascript - Jquery not removing variable's Class -


i'm making chess website practice , trying assign variable element id, use variable remove class element. reason program seems crash when try this. html snipped looks this:

<td class="square light" id="1"></td>

and javascript using jquery looks this:

var firsttouch = false; var startid = 0; $('.square').click(function(){     if (firsttouch == false){         startid = $(this).attr('id');         alert(startid);         firsttouch = true;     } else {         var startsquare = document.getelementbyid(startid);         startsquare.removeclass('pawna');         firsttouch = false;     } });

i wondering if has idea why isn't working. when alert on variable startsquare gives: [object htmltablecellelement] i'm guessing found element, doesn't seem want remove class unfortunately.

because getting element via pure js doesn't define startsquare jquery object; jquery selectors...

$("#"+ startid).removeclass('pawna');

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