javascript - Get last row of table attribute -

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var table = document.getelementbyid(table1); var lastrow = table.rows.length;  var country = lastrow.getelementbyid('country'); country.setattribute('class', "country"+lastrow);

im pretty new , wondering if possible?

instead of 

var country= document.getelementbyid('country');

as have other id=country because adding new rows..

edit

i know id unique. cloning last row of course ids same.

an id in html document unique. hence there no need sub-queries in order find elements. instead use document.getelementbyid('country')


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