JSFiddle - React, Tailwind, and code Playground
HTML
<span id="JQueryClick">Click #JQuery</span> </br>
<span id="JQueryAttrClick">Click #Attr</span> </br>
JavaScript
$('#JQueryClick').on("click", function(){alert('1')});
$('#JQueryClick').on("click", function(){alert('2')});
$('#JQueryAttrClick').attr('onClick'," alert('1')" );//this doesnt work
$('#JQueryAttrClick').attr('onClick'," alert('2')" );