jsclock/clock.html at main · PhilipLoewen/jsclock · GitHub

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<!DOCTYPE html>

<html lang="en">

<head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>JavaScript Clock</title>
 <style>
 body {
  margin: 0px;
  background-color: #FFFF00;
  background-image: url('fields.jpg');
  background-size: cover;
  color: #CCFFAA;
 }
 </style>

 <script>
 <!--

 var lineheightmin = 1.1;

 function twoDigits(n) {
   var retString = n;
   if (n<10) {
     retString = "0"+retString;
     }
   return retString;
   }

 function update() {
   var now = new Date();
   hh = twoDigits(now.getHours());
   mm = twoDigits(now.getMinutes());
   ss = twoDigits(now.getSeconds());
   hhmmss = hh+":"+mm+":"+ss;
   document.getElementById("timepar").firstChild.data  = hhmmss;

   /* Set font size and line height */
   var width = window.innerWidth;
   var height = window.innerHeight;
   fs1 = (height/lineheightmin)/16;
   fs2 = 0.666 * width/56;
   fs  = fs1; if (fs2<fs) {fs = fs2;}
   document.getElementById("timepar").style.fontSize = fs+"em";
   document.getElementById("timepar").style.lineHeight = (height - 2)+"px";
   }

 // -->
 </script>
</head>

<body onload='window.setInterval("update();",200)'>

<p id="timepar" style="text-align: center; margin: 0px; padding: 0px;
font-size: 30px; font-weight: bold;">
JavaScript Time by Philip D Loewen, updated 2024-07-09
</p>

</body>
</html>