Fullpage.js: Detect the first and last slide (Unknown number of slideshow) and freeze prev and next button

[dab-doub]

Hello, I have two buttons "previous" and "next". I can't detect the length of the slider to freeze previous button when i'm at the first slide and the Next button at the end of slide.
I've looked the documentation but I have not seen any function related to this problem. :(
Anyone can help me please ?

Thanks a lot

[alvarotrigo]

That's mainly about jQuery knowledge.

You can get the active section with:

$('.fp-section.active')

The index of the active horizontal slide with:

$('.fp-section.active .fp-slide.active').index();

Then to get the number of slides.in the active section:

$('.fp-section.active .fp-slide').length;

If you compare the active slide index with the number of sections, or with 0, then you will be able to know if you are in the 1st or the last slide.