Javascript/おみくじ

function kyouha(){
  var omikuji = ["大吉", "中吉", "小吉", "吉", "凶", "大凶"];
  var lucky = ["赤", "白", "黄", "青", "緑"];
  var unsei = omikuji[Math.floor(Math.random() * omikuji.length)];
  var color = lucky[Math.floor(Math.random() * lucky.length)];
  document.getElementById("kekka").innerHTML = "今日の運勢は「" + unsei + "」です。";
  document.getElementById("kekka2").innerHTML = "ラッキーカラーは「" + color + "」です。";
}