Javascript to capture when photo changes

[fitter man]

I'm looking to hook into a Javascript event that will tell me when the user has switched to a different "main" image (that is the large image on the right-hand side of the SmugMug style). I'm okay-ish with Javascript but I'm really not sure what event might do it. I tried using onload for the <img id="mainImage"... > tag, but that didn't cut it; I assume because some Ajax function is replacing the part of the DOM that contains the image.

My goal is to do some post-processing to the caption each time it changes, and that's really what I want to detect has changed. So, if you have any suggestions, they would be greatly appreciated.

[jfriend]

I'm looking to hook into a Javascript event that will tell me when the user has switched to a different "main" image (that is the large image on the right-hand side of the SmugMug style). I'm okay-ish with Javascript but I'm really not sure what event might do it. I tried using onload for the <img id="mainImage"... > tag, but that didn't cut it; I assume because some Ajax function is replacing the part of the DOM that contains the image.

My goal is to do some post-processing to the caption each time it changes, and that's really what I want to detect has changed. So, if you have any suggestions, they would be greatly appreciated.

Use this

onPhotoShow.subscribe(yourFunction);

and yourFunction will get called everytime a new main image gets displayed, including the first time.

[fitter man]

Thanks. I am curious if there's either documentation anywhere where I can find other goodies like this one or if there's a particular file I might want to peruse to learn more on my own.

[jfriend]

Thanks. I am curious if there's either documentation anywhere where I can find other goodies like this one or if there's a particular file I might want to peruse to learn more on my own.

I am not aware of any documentation for this kind of stuff. I've asked and look for it before too. I only know about it from discussion here on dgrin.