javascript to execute ajax function every 30 seconds

[inetquestion]

How do you enable javascript to execute a given function every X
seconds, which is not dependant on any user input?

-Inet

[Peter]

Re: javascript to execute ajax function every 30 seconds

setInterval(you rfunction,milli seconds);

[Peter Michaux]

Re: javascript to execute ajax function every 30 seconds

On Jul 9, 11:24 am, Peter <peter.schille. ..@gmail.comwro te:

setInterval(you rfunction,milli seconds);

Please quote the message to which you are replying or state enough so
your message is sufficient to explain the context of your response.

----

Using setInterval to execute a given function every x seconds can be
dangerous. If the function's execution takes longer than x seconds
than the executions of the function "stack up" and dominate the system
because they are always executing.

I prefer to use setTimeout so that there is a specified period of time
between the end of the function's execution and the beginning of its
next execution.

function foo() {
// do stuff
// ...

// make a delayed recursive call to foo
setTimeout(foo, 3000);
}

Peter

[Dr J R Stockton]

Re: javascript to execute ajax function every 30 seconds

In comp.lang.javas cript message <ab5db72a-bd6c-48ae-8ba2-5b01b0937cbb@34
g2000hsf.google groups.com>, Sat, 12 Jul 2008 10:20:32, Peter Michaux
<petermichaux@g mail.composted:

>
>I prefer to use setTimeout so that there is a specified period of time
>between the end of the function's execution and the beginning of its
>next execution.
>
>function foo() {
// do stuff
// ...
>
// make a delayed recursive call to foo
setTimeout(foo, 3000);
>}

And one can call new Date() within function foo and from it calculate
a suitably-varied delay to replace the fixed 3000.

--
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