What is a good way to write this jQuery code in only JavaScript?

can someone enlighten me with the correct answer to this?

How to write this jquery:

$(document).on('click', '[data-toggle="lightbox"]', function(event) {
event.preventDefault();
$(this).ekkoLightbox();
});

In Javascript?

P.s.: My problem is that I can't use to parallax.js (by pixelcog) and Ekko Lightbox on the same page. So probably it has to do with the jquery version, because parallax.js only works with jquery v1.11