How to create separate Fancybox galleries on the same page?

I had the same problems with Fancybox 3 - using rel="gallery" and data-fancybox-group="gallery" didnt work.

Found this codepen / fiddle that made it work, by adding .attr('data-fancybox', 'gallery');

https://codepen.io/anon/pen/EwpOxE?editors=1010


Here is one more example (based on fancyBox3). Adding same value for data-fancybox attribute. (for example, data-fancybox="group")

@import url('https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css');
body {
  margin: 0;
  padding: 10vh 10vw;
  color: #444;
}

h1 {
  font-weight: 700px;
}

h2 {
  font-weight: 600;
}

a,
a:hover {
  color: #ff5268;
}

.imglist {
  font-size: 0;
}

.imglist a {
  display: inline-block;
  margin: 10px 10px 0 0;
}

.imglist a:last-of-type {
  margin-right: 0;
}

.imglist a img {
  vertical-align: top;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/fancybox/3.5.2/jquery.fancybox.min.css" rel="stylesheet" />

<script src="https://cdnjs.cloudflare.com/ajax/libs/fancybox/3.5.2/jquery.fancybox.min.js"></script>

<h2>fancybox v3.5.2 - Grouping galleries</h2>

<p>
  Groups are created by adding the same <code>data-fancybox</code> attribute value
</p>

<hr class="my-5" />

<h4>Group 1 Gallery</h4>
<p class="imglist" style="max-width: 1000px;">
  <a href="https://source.unsplash.com/juHayWuaaoQ/1500x1000" data-fancybox="group1" data-caption="Backpackers following a dirt trail">
    <img src="https://source.unsplash.com/juHayWuaaoQ/240x160" />
  </a>

  <a href="https://source.unsplash.com/eWFdaPRFjwE/1500x1000" data-fancybox="group1" data-caption="Mallorca, Llubí, Spain">
    <img src="https://source.unsplash.com/eWFdaPRFjwE/240x160" />
  </a>

  <a href="https://source.unsplash.com/c1JxO-uAZd0/1500x1000" data-fancybox="group1" data-caption="Danish summer">
    <img src="https://source.unsplash.com/c1JxO-uAZd0/240x160" />
  </a>

  <a href="https://source.unsplash.com/eXHeq48Z-Q4/1500x1000" data-fancybox="group1" data-caption="Sunrise above a sandy beach">
    <img src="https://source.unsplash.com/eXHeq48Z-Q4/240x160" />
  </a>
</p>

<h4>Group 2 Gallery</h4>
<p class="imglist" style="max-width: 1000px;">
  <a href="https://source.unsplash.com/RFgO9B_OR4g/1500x1000" data-fancybox="group2" data-caption="Woman on a slope by the shore">
    <img src="https://source.unsplash.com/RFgO9B_OR4g/240x160" />
  </a>

  <a href="https://source.unsplash.com/7bwQXzbF6KE/1500x1000" data-fancybox="group2" data-caption="Mountain hiking sunset">
    <img src="https://source.unsplash.com/7bwQXzbF6KE/240x160" />
  </a>

  <a href="https://source.unsplash.com/NhU0nUR7920/1500x1000" data-fancybox="group2" data-caption="Sunset Picnic">
    <img src="https://source.unsplash.com/NhU0nUR7920/240x160" />
  </a>

  <a href="https://source.unsplash.com/B2LYYV9-y0s/1500x1000" data-fancybox="group2" data-caption="On them Indiana Nights">
    <img src="https://source.unsplash.com/B2LYYV9-y0s/240x160" />
  </a>
</p>

Just assign a different rel attribute to each gallery

<a class="fancybox" rel="gallery01" href="product01/image01.jpg">one</a>
<a class="fancybox" rel="gallery01" href="product01/image02.jpg">one</a>
<a class="fancybox" rel="gallery01" href="product01/image03.jpg">one</a>
<a class="fancybox" rel="gallery01" href="product01/image04.jpg">one</a>

<a class="fancybox" rel="gallery02" href="product02/image01.jpg">two</a>
<a class="fancybox" rel="gallery02" href="product02/image02.jpg">two</a>
<a class="fancybox" rel="gallery02" href="product02/image03.jpg">two</a>

<a class="fancybox" rel="gallery03" href="product03/image01.jpg">three</a>
<a class="fancybox" rel="gallery03" href="product03/image02.jpg">three</a>
<a class="fancybox" rel="gallery03" href="product03/image03.jpg">three</a>

... and they all can use the same script:

$(".fancybox").fancybox();