Developing a Table of Contents to turn on\off layers... anyone try this?
Accepted Solutions
this is why every so often I like to recommend ESRI to please include TOC as a part of the API. Probably something like 75% of people are using Nianwei Liu 's AGS TOC widget. I'd recommend using that, it's a fantastic widget. There's nothing wrong with making your own TOC if you want to do something unique but 9 out of 10 times we just need the basic functionality AGS TOC provides.
AGS TOC caveats and notes: On a recent project I found out ESRI removed the ability to embed tokens in proxies a few API versions back. Thus now AGSTOC now doesn't work with secure services! One reason why ESRI should officially add a TOC in the API. For this project... I "made" a TOC for the one secure service by creating a checkbox tied to a .show/hide for that layer..and use AGS TOC for the other services, one TOC per Accordion. (you can have multiple instances of a AGS TOC widget, and for example put one per accordion) Also AGSTOC doesn't work with Annotations. And until recently had problems with legends in secure services (an ESRI staffer was kind enough to provide a workaround) And when calling ESRI Support one must usually convince them to support AGS TOC widget once they notice that in the code. In a recent thread Kelly says they are considering adding the WebApp Builder TOC to the API. This will sure be a great thing! I am looking forward to it. 
