Darths & Droids EZ reader

gistfile1.js

// Makes it so clicking on the current comic loads the next one. Also updates the URL so you can go back and forward.
var e = document.querySelector('body > div.center > p:nth-child(2) > img');
e.addEventListener('click', function() {
    var next = function(n) { var s = '0000' + (++n); return s.substr(s.length - 4); };
    window.history.pushState({n: this.src.match(/\d{4}/)[0].replace(/\d{4}/, next)}, 'idk', window.location.href.replace(/\d{4}/, next));
    this.src = this.src.replace(/\d{4}/, next);
});
window.onpopstate = function(ev) {
    e.src = e.src.replace(/\d{4}/, ev.state.n);
    console.log(ev);
};