Window setInterval() Method - Javascript Browser Object Model

Description

The setInterval() method calls a function or evaluates an expression at intervals in milliseconds.

Syntax

window.setInterval(function,milliseconds, param1, param2,...);

Parameter Values

Parameter	Description
function	Required. The function that will be executed
milliseconds	Required. The intervals to execute the code.
param1, param2, ...	Optional. Additional parameters to pass to the function

Return Value:

A Number, representing the ID value of the timer that is set.

The following code shows how to create a clock.

Demo Code

ResultView the demo in separate window

<!DOCTYPE html>
<html>
<body>

<p id="demo"></p>

<script>
var myVar = setInterval(function(){ myTimer() }, 1000);

function myTimer() {//from w ww . j a v  a  2s  .c  o m
    var d = new Date();
    var t = d.toLocaleTimeString();
    document.getElementById("demo").innerHTML = t;
}
</script>

</body>
</html>