You should create a tool where you first be able to register players and then re-register results. The tournament you create will have 4 players, but for full credit should be easy to extend to more players. Each player will play against each of the other players where victory gives a point, draw a half a mark and losses are not eligible. When all the results are registry you should see a list of players by points. This is the task, and this is what i got so far:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script>
window.onload = oppdater;
var listemedspillere = [];
function oppdater (){
document.getElementById("reg").onclick = registrer;
}
function registrer (){
var player = document.getElementById("spiller").value;
var x = document.getElementById("spillere1");
var option = document.createElement("option");
option.text = player;
x.add(option);
listemedspillere.push(player);
var y = document.getElementById("spillere2");
var option = document.createElement("option");
option.text = player;
y.add(option, y[0]);
}
</script>
</head>
<body>
<h1>Sjakkturnering:</h1>
<p id="hei"></p>
<input id="spiller" type="text" placeholder="Registrer en ny spiller">
<button id="reg">Legg til spiller</button>
</br>
<select id="spillere1"></select>
<select id="spillere2"></select>
</br>
<button id="vinn">Vant</button>
<button id="tapp">Tap</button>
<button id="uavgjort">Uavgjort</button>
</body>
</html>