Xallarap

Super simple, lightweight parallax.

---

Browser support

Chrome	Edge	Firefox	Safari / iOS	UC Android	Samsung
60+	14+	53+	10+	11+	6+

Note: This package does not support IE anymore.
If you're looking for IE11 support, you can install xallarap@^0.2.8
or make sure you're compiling down to ES5 with something like @babel/preset-env

---

Get Down to Business

npm install xallarap --save

import parallax from 'xallarap';


(start => {
    if (document.readyState !== 'loading') {
        start();
    } else {
        document.addEventListener('DOMContentLoaded', start);
    }
})(() => {
    parallax({
        foreground: {
            el: '.parallax',
            compensate: false,
            amount: 300
        },
        background: {
            el: '.parallax-background',
            image: '/path/to/some/image.jpg',
            amount: Math.ceil(window.innerHeight / 2)
        }
    });
});

All options can be assigned (or overwritten) with the data attributes seen below.

You can also use ES6 modules to take advantage or tree-shaking with Webpack or Rollup.

import {background as parallax} from 'xallarap';


(start => {
    if (document.readyState !== 'loading') {
        start();
    } else {
        document.addEventListener('DOMContentLoaded', start);
    }
})(() => {
    parallax({
        el: '.parallax-background',
        image: '/path/to/some/image.jpg',
        amount: Math.ceil(window.innerHeight / 2)
    });
});

---

Usage

options.foreground.el

Type: string|array|node Default: [data-parallax]

options.foreground.compensate [data-parallax-compensate]

Type: bool Default false

options.foreground.amount [data-parallax-amount]

Type: int Default: 300

options.background.el

Type: array|string|node Default: [data-parallax-background]

options.background.image [data-parallax-background]

Type: bool Default false

options.background.amount [data-parallax-amount]

Type: int Default: Math.ceil(window.innerHeight / 2)

---

Hello, World.

You can use this method to just toss some parallax on a page quickly.

<div data-parallax-background="https://example.com/path/to/some/image.jpg">
    <h1>
        <span data-parallax>Hello, world.</span>
    </h1>
</div>

Then, you can simply load the script and initial it.

<script src="https://unpkg.com/xallarap"></script>

<script>
    // Using jQuery
    $(document).ready(function() {
        window.xallarap();
    });

    // or vanilla JS
    (function(start) {
        if (document.readyState !== 'loading') {
            start();
        } else {
            document.addEventListener('DOMContentLoaded', start);
        }
    })(function() {
        window.xallarap();
    });
</script>

You’re all set!

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MIT License. © 2017 Cornelius Ukena.