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var TE_LIST = [ "グー", "チョキ", "パー" ];
var KEKKA_LIST = [ "あいこ", "勝ち", "負け" ];
var com = 0;
var timer = null;
function change_te() {
var e = document.getElementById("com");
com = (com + 1) % 3;
e.innerHTML = TE_LIST[com];
}
function pon(you) {
if (timer == null) return;
clearInterval(timer);
timer = null;
var kekka = (com - you + 3) % 3;
alert(KEKKA_LIST[kekka]);
}
function start() {
if (timer != null) return;
timer = setInterval(change_te, 200);
}