Docs

Load Script

Dependancies: jQuery ()

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>

<script src="https://cdn.rawgit.com/sukritchhabra/opacityChangeOnScroll/master/opacityChangeOnScroll.js"></script>
or
<script src="http://sukritchhabra.com/opacityChangeOnScroll/opacityChangeOnScroll.js"></script>

Usage

Available Classes

increase-on-scroll-down

Increase opacity of the element as you scroll down

<img class="increase-on-scroll-down" src="img1.png">

decrease-on-scroll-down

Decrease opacity of the element as you scroll down

<img class="decrease-on-scroll-down" src="img1.png">

increase-decrease-on-scroll-down

Increase First, then Decrease opacity of the element as you scroll down

<img class="increase-decrease-on-scroll-down" src="img1.png">

Data-Attributes

data-start

Start changing opacity of the element when it's offset by x% of the windows height from the bottom of the window

<img class="increase-on-scroll-down" data-start="20" src="img1.png">

Start changing opacity of the element when it is at an offset of 20% of the windows height from the bottom of the window

data-end

Stop changing opacity of the element when it's offset by x% of the windows height from the top of the window

<img class="increase-on-scroll-down" data-end="50" src="img1.png">

Start changing opacity of the element when it is at an offset of 50% of the windows height from the top of the window

Use Together

Start changing opacity of the element when it's offset by x% of the windows height from the bottom of the window and Stop changing opacity of the element when it's offset by y% of the windows height from the top of the window

<img class="increase-on-scroll-down" data-start="30" data-end="20" src="img1.png">

Start changing opacity of the element when it's offset by 30% of the windows height from the bottom of the window and Stop changing opacity of the element when it's offset by 20% of the windows height from the top of the window