JSFiddle - React, Tailwind, and code Playground

JavaScript

var testRegex = /^https?:\/\/(?:[a-z\-]+\.)+[a-z]{2,6}(?:\/[^\/#?]+)+\.(?:jpe?g|gif|png)$/;
var imageUrl = "http://stackoverflow.com/questions/406192/how-to-get-the-current-url-in-jquery";

if (testRegex.test(imageUrl)) {
    alert('Not Match');
}