JSFiddle - React, Tailwind, and code Playground
HTML
<div id="result"></div>
JavaScript
var showResult = function showResult(str) {
$('#result').text(str);
};
var options = {
imageTypes1: /\.(gif|jpe?g|png)$/i,
imageTypes2: /image\/(gif|jp?g|png)$/i
};
if (options.imageTypes1.test('.jpg') && options.imageTypes2.test('image/png')) {
//do stuff
showResult('true');
} else {
showResult('false');
}