Start Timer from Javascript

Question

The Timer is defined like this:

<asp:Timer ID="Timer1" OnTick="Timer1_Tick" runat="server" Interval="1000" Enabled="false" />

When calling $find("<%= Timer1.ClientID %>")._startTimer(); I'm getting this error:

Microsoft JScript runtime error: Unable to get value of the property '_startTimer': object is null or undefined

and when calling $('#Timer1')._startTimer(); I'm getting this error:

Microsoft JScript runtime error: Object doesn't support property or method '_startTimer'

Any advice will be welcome.

Jonathan Lonowski · Accepted Answer · 2012-07-18 22:27:44Z

1

Try passing $find() the shorter server-side (or "Component") ID:

$find("Timer1")._startTimer();

You may also be able to use $get() with the ClientID:

$get("<%= Timer1.ClientID %>")._startTimer();

With jQuery, pass it the ClientID as with $get() and use .get(0) to retrieve the DOM Object from the jQuery collection:

$('#<%= Timer1.ClientID %>').get(0)._startTimer();

edited Jul 18, 2012 at 22:27

answered Jul 18, 2012 at 21:49

Jonathan Lonowski

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5 Comments

toy4fun Over a year ago

Thanks a lot, works great now. Which method is preferred? By the way, is there a way to just invoke the Tick event without starting the timer?

Jonathan Lonowski Over a year ago

@toy4fun Each method is a viable option. Just use the one that seems best to you. As for raising the Tick event, the control is defined with a _raiseTick method, which _startTimer calls with a setTimeout.

toy4fun Over a year ago

If I understood correctly, I can call _raiseTick without enabling the timer?

Jonathan Lonowski Over a year ago

@toy4fun For that, you'll want to call _stopTimer after _raiseTick, as _raiseTick calls _startTimer itself to setup the next Tick.

toy4fun Over a year ago

So now my code looks like that: $find("Timer1")._raiseTick(); $find("Timer1")._stopTimer();. Thanks Again.

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