The Javascript client library for imgix.
- Installation
- Getting Started
- Examples
- Documentation
- jQuery Plugin
- Browser Support
- Polyfills
- Dependencies
- npm:
npm install imgix.js - bower:
bower install imgix.js - Manual: Download and use
dist/imgix.js
If you don't already have an imgix account then sign up at imgix.com.
Once your imgix source is created then simply add imgix.min.js to your page:
<script src="http://www.imgix.com/libraries/imgix.js" type="text/javascript"></script>imgix.js is dependency-free so it includes its own DOM onready method. Although if you're using additional libraries that include similar functionality then you can continue to use those.
<script type="text/javascript">
imgix.onready(function() {
// ready to go
});
</script>Please read the examples section below.
Check out the imgix.js home page for a big picture overview of everything you can do. Additionally there are full examples in the examples/ directory.
####Single fluid image (full)
This is the smallest full example of using imgix to provide a fluid image.
<html>
<head>
<style>
.imgix-fluid-bg {
position: absolute;
width: 100%;
height: 100%;
top: 0;
left: 0;
display: block;
}
</style>
<!-- include imgix.js -->
<script src="https://www.imgix.com/libraries/imgix.js" type="text/javascript"></script>
<script>
imgix.onready(function() {
imgix.fluid({
updateOnResizeDown: true,
pixelStep: 5,
autoInsertCSSBestPractices: true
});
});
</script>
</head>
<body>
<div data-src="https://assets.imgix.net/coffee.jpg?fit=crop&crop=faces" class="imgix-fluid imgix-fluid-bg"></div>
</body>
</html>####Build URLs
A simple example of creating an imgix URL with param setters.
var ix = new imgix.URL('http://assets.imgix.net/examples/butterfly.jpg');
ix.setParam('sepia', 50);
ix.setParam('rot', 20);
ix.getURL(); // equals http://assets.imgix.net/examples/butterfly.jpg?sepia=50&rot=20####Build URLs and Attach to an Element
An example of creating an imgix URL with an object of imgix params/values via setParams then setting that image on an element.
var ix = new imgix.URL('http://assets.imgix.net/examples/butterfly.jpg');
ix.setParams({w: 500, px: 20});
ix.attachImageTo('.butterfly-target');####Color Palette Extraction
An example of extracting the colors from an image and then setting the darkest image as the background color of the page.
var ix = new imgix.URL('http://assets.imgix.net/examples/butterfly.jpg');
ix.getColors(function(colors) {
document.body.style.backgroundColor = colors[0];
});####Auto Update Element on imgix.URL change
An example of auto re-setting an element's image whenever the imgix.URL instance changes. Here we're rotating an image by 15 degrees every 2 seconds.
var ix = new imgix.URL('http://assets.imgix.net/examples/butterfly.jpg');
ix.autoUpdateImg('.butterfly-target');
var rotation = 0;
window.setInterval(function() {
rotation += 15;
ix.setRotate(rotation);
}, 2000);The imgix.js API Documentation outlines all public imgix.js code.
Most usage will be centered around:
- imgix.URL - for imgix image URL creation and manipulation.
- imgix.fluid - fast and easy responsive images.
If you're already using jQuery then you can also include imgix.jquery.js to easily make changes to existing images.
<script src="https://www.imgix.com/static/js/imgix.jquery.js" type="text/javascript"></script>For example, if you wanted to add a text watermark to all your gallery images:
$('.gallery').imgix().setParams({txt: 'Copyright Chester 2015', txtclr: 'f00', txtsize:20});imgix.js should support all browsers back to and including Internet Explorer 8. This requires a number of polyfills to be included in its source. If you're already providing IE8 polyfills see the section below about building imgix.js without them.
####IE8 Tips
Ensure you set a doctype so you do not invoke "quirks" mode.
<!DOCTYPE html>Ensure you add an IE=edge meta tag in your <head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">If you're using imgix.js as part of a larger webapp that already supports IE8 (or you do not care about supporting it) then you can build imgix.js without these polyfills.
$ cd imgix.js/
$ npm install # if you haven't already
$ grunt build --no-polyfillsNow you'll have a much smaller version of imgix.js and imgix.min.js in the dist/ directory.
The library itself has no dependencies. Although if you want to build from source, run tests, or contribute then you'll need node / npm and grunt.
####Installing Build Dependencies:
$ npm install####Running Tests:
$ grunt test####Building docs (auto generated from jsdocs in the source):
$ grunt builddocsThis writes the docs to docs/api.md for easy viewing on GitHub.
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