Imager.jsx

A React component for responsive images in desktop and mobile browsers. Featuring Imager.js!

React is used for the initial component rendering. Its batched state update mechanism is then used to handle multiple image size at once, to avoid layout thrashing.

Install

Imager.jsx is a browserifiable Node module.

npm i --save imager.jsx

If you want to generate a static artifact, clone the repository and run the following commands:

git clone https://github.com/oncletom/Imager.jsx.git imager.jsx && cd imager.jsx
npm install
npm run build
open demo/index.html

Usage

Imager.jsx is a two-steps use.

The React Factory

The factory associates an Imager.js behaviour with a React component.

var Imager = require('imager.jsx');

var ResponsiveImage = Imager({
  availableWidths: [333, 444, 555],
  availablePixelRatios: [1, 1.3, 2]
});

Please refer to the Imager.js JavaScript Configuration documentation for more informations.

The React Component

The React component is used to render a responsive image (an <img /> HTML element).

<ResponsiveImage
 src="http://placehold.it/{width}"
 className="responsive-image"
 alt="alternative text" />

The only mandatory attribute is src, the equivalent of Imager.js data-src attribute.

className and alt are respectively rendered as class and alt HTML attributes.

Examples

Clone the project and open the demo.html page for live examples.

<img /> element

React.render(<ResponsiveImage src="http://placehold.it/{width}" />, container);

This is rendered as:

<img src="http://placehold.it/736" class="image-replace" data-src="http://placehold.it/{width}" alt="">

<div style="background-image: ..." /> element

React.render(<ResponsiveImage src="http://placehold.it/{width}x{height}">
  <h2>Tile title</h2>
</ResponsiveImage>, container);

This is rendered as:

<div style="background-image: url(http://placehold.it/375x640);" class="image-replace" data-src="http://placehold.it/{width}x{height}">
  <h2>Tile title</h2>
</div>

License

The MIT License (MIT)

Copyright (c) 2014 Thomas Parisot

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.