I have made a clock in javascript but its a static clock. What changes I need to do in the following code so that it updates with every second.
<html>
<head>
<title>Javascript Clock</title>
<script type="text/javascript">
function clk() {
var a=new Date();
document.getElementById("disp").innerHTML=a.getHours() + ":" + a.getMinutes() + ":" + a.getSeconds() ;
}
</script>
</head>
<body>
<input type="button" onclick="clk()" value="Display Clock" />
<p id="disp">Clock Space</p>
</body>
</html>
You can use
setIntervalto run your clk() function every second:MDN on setInterval
As nnnnnn points out, the timer interval probably won’t be synchronized with the passage of an actual, real-time second, so using an interval like 100ms might not be a bad idea.