JSFiddle - React, Tailwind, and code Playground

HTML

<object type="application/x-shockwave-flash" id="swf_player" data-pid="abc"></object>
<div id="div_container" data-pid="1234">pid</div>
<script>
alert($('#swf_player').data('pid') + ' = abc');
$('#swf_player').data('pid', 'def');
alert($('#swf_player').data('pid') + ' = def');

alert($('#div_container').data('pid') + ' = 1234');
$('#div_container').data('pid', '5678');
alert($('#div_container').data('pid') + ' = 5678');
</script>