根据当前时间显示问候语


<!DOCTYPE html>
<html>
<head lang="en">
  <meta charset="UTF-8">
<title>根据当前时间显示问候语</title>
</head>
<h2 id="date"></h2>
<h2 id="time"></h2>
<h2 id="hello"></h2>
<script type="text/javascript">
  let date = document.getElementById("date");
  let time = document.getElementById("time");
  let hello = document.getElementById("hello");

  let data = new Date();
  let year = data.getFullYear();
  // 注意getMonth() 
  // 返回值是 0(一月) 到 11(十二月) 之间的一个整数
  let month = data.getMonth()+1;
  let day = data.getDate();
  let hour = data.getHours();
  let minute = data.getMinutes();


  date.innerHTML = `今天日期${year}年${month}月${day}日`;
  time.innerHTML = `今天时间${hour}点${minute}分`;
  
  if (hour>=0 && hour<=12) {
     hello.innerHTML = "上午好! ";
  } else if (hour>12 && hour<=18) {
     hello.innerHTML = "下午好! ";
  } else {
     hello.innerHTML = "晚上好! ";
  }


</script>
<body>

</body>
</html>

posted @ 2020-05-12 22:32  陈太浪  阅读(1117)  评论(0编辑  收藏  举报