JSFiddle - React, Tailwind, and code Playground
HTML
<div id='results'>
</div>
JavaScript
var $=jQuery;
var $h=$('<span>');
function encodeAttr(t) {
return $h.attr('title',t).prop('outerHTML').match(/title="(.*)"/)[1]
}
var myTitleVar = '"My Title\'s Quotation Marks"';
var encoded = encodeAttr(myTitleVar);
$('body').html(`<span title="${encoded}"> My content </span>`)