ulala v1.0.0
Ulala
Show the right things when you scroll
Usage
Include the script in your page. I suggest you to use the RAWGIT CDN.
<script src="https://rawgit.com/caffeinalab/ulala/master/ulala.min.js"></script>
<script>
Ulala.init(/* config */);
</script>Features out of the box
Lazy loading
Just set data-image=[URL] to your tag HTML. The image will be loaded when it's visible and the -loaded class will be added.
If the tag is an IMG, the src attribute will be used. Otherwise, the image will be applied with a background-image.
Futhermore, unless you don't specify noSuffixes: true the image path will be rewritten based on device pixel ratio and the width.
Waypoint
Set data-waypoint on your tag, and when the scroll reach your element, the -visible class will be added.
NOTE: If the tag is an image or a lazy loading image, the class will be added only when the image is fully loaded.
Parallax
Set the data-parallax=[RATIO] on your image, and wrap it in a simple <div data-parallax-wrapper></div>.
So the HTML must looks like this:
<div data-parallax-wrapper>
<img data-parallax="0.5" src="[URL]" />
</div>The ratio value sets how much enlarge the image to apply the parallax; the default value is 0.25.
Config in .init()
| Property | Default | Description |
|---|---|---|
| preloadIn | 1 | Ratio of the window to trigger the loading |
| visibilityIn | 0 | Ratio of the window to trigger the visibility |
| visibleClass | -visible | The class to add when visible |
| loadedClass | -loaded | The class to add when an image is loaded |
| useSuffixes | true | Tell the lib to use / not use suffix for images (like @2x |
LICENSE
MIT.
7 years ago