HIT&BLOW

クリックしたボタンの要素を取得

    
    let answer = ['','',''];

    document.getElementById('zero').onclick = function clickbtn() {
    if(answer[0] === ''){
      answer[0] = parseInt(zero.value);
    }
    else if(answer[1] === ''){
      answer[1] = parseInt(zero.value);
    }
    else answer[2] = parseInt(zero.value);
    console.log(answer);
  }