We have all written ugly code so far, that's a fact. Some are just bad, some are worse. And some other ones are just disgusting. Naturally, I'm no exception either.

For me, it's probably this one(prepare yourself):

function S1E23(){
    document.getElementById("Season3div").style.display="none";
    document.getElementById("Season4div").style.display="none";
    document.getElementById("director").style.display="block";
    document.getElementById("directorname").innerHTML="<a target=blank href=https://www.imdb.com/name/nm0236173/?ref_=tt_ov_dr>Dermott Downs</a>";
    document.getElementById("episode23buttons").style.display="block";
    document.getElementById("episode2buttons").style.display="none";
    document.getElementById("episode3buttons").style.display="none";
    document.getElementById("episode4buttons").style.display="none";
    document.getElementById("episode5buttons").style.display="none";
    document.getElementById("episode6buttons").style.display="none";
    document.getElementById("episode7buttons").style.display="none";
    document.getElementById("episode8buttons").style.display="none";
    document.getElementById("episode9buttons").style.display="none";
    document.getElementById("episode10buttons").style.display="none";
    document.getElementById("episode11buttons").style.display="none";
    document.getElementById("episode12buttons").style.display="none";
    document.getElementById("episode13buttons").style.display="none";
    document.getElementById("episode14buttons").style.display="none";
    document.getElementById("episode15buttons").style.display="none";
    document.getElementById("episode16buttons").style.display="none";
    document.getElementById("episode17buttons").style.display="none";
    document.getElementById("episode18buttons").style.display="none";
    document.getElementById("episode19buttons").style.display="none";
    document.getElementById("episode20buttons").style.display="none";
    document.getElementById("episode21buttons").style.display="none";
    document.getElementById("episode22buttons").style.display="none";
    document.getElementById("episode1buttons").style.display="none";
    document.getElementById("Season2div").style.display="none";
    document.getElementById("Season1div").style.display="block";
    document.getElementById("review").style.display="block";
    document.getElementById("reviewlink").style.display="block";
    document.getElementById("reviewlink").innerHTML="<a target=blank href=http://www.ign.com/articles/2015/05/20/the-flash-fast-enough-review>Read here</a>";

    document.getElementById("trailer").style.display="block"
    document.getElementById("promo").style.display="block"
    document.getElementById("promo").innerHTML="<a target=blank href=https://www.youtube.com/watch?v=Qx90DwHjIvk>Watch here</a>";

    document.getElementById("episodeinformation").style.display="block";
    document.getElementById("episoderate").style.display="block";
    document.getElementById("episodedate").style.display="block";
    document.getElementById("episodelength").style.display="block";
    document.getElementById("date").innerHTML="19 May 2015";
    document.getElementById("star").style.display="block";
    document.getElementById("length").innerHTML="44 min";
    document.getElementById("ratenumber").innerHTML="9.6";
    document.getElementById("episodeimage").src="s1e23.png";
    document.getElementById("episodetitle").innerHTML = "<div id=episodetitle>Season 1 Episode 23:Fast Enough</div>";
    document.getElementById("episodedescription").innerHTML="<p> Once the preparations were set for Barry to travel back in time,"+
" he traveled back to the night Nora died. However, despite this,"+
" Barry's alternative future self saw Barry and signaled him to not to interfere and proceeded"+
" to transport his younger self 20 blocks away.<br><br> Barry, in tears, obeyed. He spoke to Nora once last time,"+
" revealing his identity to her, and assured her that he and Henry are okay in the future."+
" In the present, Eobard gets into the time machine Cisco made,"+
" remarking that Rip Hunter first designed it.<br><br> Cisco warns him never to return."+
" Suddenly, a helmet with wings on top comes out of the wormhole, which Eobard takes as his signal to leave. "+
"However, Barry returns, destroying the time machine with a supersonic punch.</p>";

}

I'd written this back when I just started programming, I was a total beginner, and I made a static website about The Flash. Back then I'd thought it was really good, but now I obviously know it's not. It is seriously terrible, like for real.

And if it's not enough, I had repeated the function above around 70 times, only changing 1 line, where I set the display of the current episode to block. Thus the JS file consisted of thousands of lines of ugly code.

It's your turn now, share the worst piece of code you have written so far :D

What's one of the ugliest piece of code you've written so far?