jquery.lazyLoader

Converts links either pointing to an image src or with a data-img attribute to images with that source.

Usage

With the following markup

<div id="#lazy">
    <a href="myimage.jpg">my image</a>
</div>

You run the plugin on the links

$('#lazy a').lazyLoader();

Examples

<a href="myimage.jpg">my image</a>

converts to

<img src="myimage.jpg" alt="my image" />

and with data attribute:

<a href="mypage.html" data-img="myimage.jpg">my image</a>

converts to

<img src="myimage.jpg" alt="my image" />

Responsive images

If you want to dynamically load images dependent on the screen dimensions then you can use the following.

<a href="myimage.jpg" 
   data-img768="myimage-768.jpg" 
   data-img990="myimage-990.jpg" 
>my image</a>

$('a').lazyLoader({
    steps: [768,990] // this must be sorted correctly
});

Or it also supports dynamic urls so you don't need all those data attributes.

<a href="myimage.jpg">my image</a>

$('a').lazyLoader({
    img: function(url, windowWidth) {
        if (windowWidth >= 768){
            return url.replace(/.(jpg|gif|png)$/i, '-mega.$1'); 
        } else {
            return url;
        }
    },
    steps: [768,990] // leave this out if you just want it to run once
});

This function appends "-mega" on to the end of the url if the windowWidth is greater than or equal to 768.

<img src="myimage-mega.jpg" alt="my image" />

Detecting When All Images Have Loaded

$('[rel="image"]').on('imagesLoaded', function(ev){ // all images have been loaded });

Test Suite

To run the test suite, you need node and npm

$ npm install
$ npm test