prac10-5.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>setTimeout</title>
    <script>
      let timerID;
      function run() {
        let div = document.getElementById("timer");
        let now = new Date();
        div.innerHTML = now.toLocaleTimeString();
        timerID = setInterval(startTimer, 1000);
      }
      function startTimer() {
        div = document.getElementById("timer");
        now = new Date();
        div.innerHTML = now.toLocaleTimeString();
      }
    </script>
  </head>
  <body onload="run();">
    <h2>div 태그에 시계 만들기</h2>
    <hr />
    <div id="timer"></div>
  </body>
</html>