Transparent Nav to Background Color Nav on Scroll with Javascript (Intersection Observer API, Part1)

Published: 22 March 2021
on channel: Coding in Public

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For the next three videos, we’ll be examining the Intersection Observer API in Javascript. With some simple vanilla Javascript, we’ll trigger a class on our nav to add a background color on scroll. The intersection observer is more performant because it doesn’t have to watch every moment you’re scroll. You tell it what to watch and it’ll observe (almost like a click event listener) and run only when necessary.

Code: https://github.com/coding-in-public/i...

In this video, I'll show you how to:
• set up an intersection observer
• add or remove classes when the observed element is in the window (or out of the window)
• and more!

Part 2 (fade in images on scroll):    • Fade Images on Scroll with Javascript...
Part 3 (enable terms and conditions button):    • Enable Terms and Conditions Button on...

My last video on Parcel:    • A Beginner’s Guide to Parcel JS

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