Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm looking for some functionality beyond what ESRI already provides in the JSAPI. For example, the ability to display the LOD in a tooltip on the zoom control. It seems like there should be a dojo+jsapi answer to openlayers+geoext but I have not found it.

Can anyone point me to Any Open Source Extensions to ESRI JSAPI?

share|improve this question
Why not look at using OpenLayers or Leaflet? What is keeping you stuck on the JSAPI? – James Fee Feb 21 '12 at 3:53
I work with OpenLayers + Dojo as well but this isn't really an answer. What would be great is a toolkit which extends both OL and JSAPI using a common interface...but that's another topic. Presently I'm looking for pre-build solutions to further enhance what ESRI + dojo already provide. _ is to JSAPI+Dojo as geoext is to OL+ExtJS. – ca0v Feb 21 '12 at 9:15
up vote 3 down vote accepted

I would argue that the JSAPI already provides equivalent functionality to what's in GeoExt. All of the additional widgets provided by dojo are just a require statement away. It's up to you how you use them.

Here's an example of a JSAPI site that has always struck me as having a "GeoExt feel":

For your specific case of a tooltip on the zoom control, I know I've seen this on some sites in the past that do this but I'm not able to quickly find one. kind of does this:

And we have a sample showing how to change the zoom slider ticks:

But I don't think that's what you're asking. How's this look:

share|improve this answer
These don't address the specific example I mentioned, which is an equal to nor is it any better than saying ExtJS already exists so why bother with GeoExt? There would be value in a community built extension to JSAPI...but perhaps nothing like that yet exists. Regarding your solution...It's close but was looking for a tooltip on the slider itself. I believe the solution at jsfiddle is better than the tooltip I was looking for because it puts the zoom info right on the slider. – ca0v Feb 21 '12 at 9:27
I extended your solution to place the tooltip on the handle which does now address the need of the example I mentioned in the question: But as far as I know there's no place for me to capture and share this progress with fellow JSAPI developers. – ca0v Feb 21 '12 at 9:41
@user2023 I'm not that familiar with GeoExt so I didn't know you were talking about a specific sample. In the future, please link to what you're talking about. Regarding sharing, has has a code gallery:… There's also github... – Derek Swingley Feb 21 '12 at 15:34

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.