base/index.html at master · luismiguelbravo/base · GitHub

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<!DOCTYPE html>
<html>
<head>
  <script>
    var color = 0;
    function startTime() {
      if (color == 0) {
        document.body.style.backgroundColor = "red";
      }
      if (color == 1) {
        document.body.style.backgroundColor = "green";
      }
      if (color == 2) {
        document.body.style.backgroundColor = "blue";
      }
      if (color == 3) {
        document.body.style.backgroundColor = "white";
      }
      color++;
      if (color > 2) color = 0;
      var t = setTimeout(startTime, 1000);
    }
  </script>
</head>
  <body onload="startTime()">
    <table style="width: 100%; height: 20%">
      <tr>
        <td style="background-color: red; color: red;">rojo</td>
        <td style="background-color: green; color: green;">verde</td>
        <td style="background-color: blue; color: blue;">azul</td>
      </tr>
    </table>
  </body>
</html>