In your case, you should use html("your text")
$(function(){
$('#ma').find("label[id=baa]").html("1");
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="ma">
<label id="baa">foaie</label>
</div>
1
solved Want to change Label inside div with ID using jquery