imagesLoaded

JavaScript is all like "You images done yet or what?"

imagesloaded.desandro.com

Detect when images have been loaded.

imagesLoaded on GitHub 4,500

Demo

Edit this demo or vanilla JS demo on CodePen.

Just to keep things interesting, there’s a 10% chance of adding a broken image.

Install

Download

CDN

<script src="https://npmcdn.com/imagesloaded@4.1/imagesloaded.pkgd.min.js"></script>
<!-- or -->
<script src="https://npmcdn.com/imagesloaded@4.1/imagesloaded.pkgd.js"></script>

Package managers

Install via npm: npm install imagesloaded

Install via Bower: bower install imagesloaded --save

jQuery

You can use imagesLoaded as a jQuery Plugin.

$('#container').imagesLoaded( function() {
  // images have loaded
});

// options
$('#container').imagesLoaded( {
  // options...
  },
  function() {
    // images have loaded
  }
);

.imagesLoaded() returns a jQuery Deferred object. This allows you to use .always(), .done(), .fail() and .progress().

$('#container').imagesLoaded()
  .always( function( instance ) {
    console.log('all images loaded');
  })
  .done( function( instance ) {
    console.log('all images successfully loaded');
  })
  .fail( function() {
    console.log('all images loaded, at least one is broken');
  })
  .progress( function( instance, image ) {
    var result = image.isLoaded ? 'loaded' : 'broken';
    console.log( 'image is ' + result + ' for ' + image.img.src );
  });

Vanilla JavaScript

You can use imagesLoaded with vanilla JS.

imagesLoaded( elem, callback )
// options
imagesLoaded( elem, options, callback )
// you can use `new` if you like
new imagesLoaded( elem, callback )

Using a callback function is the same as binding it to the always event (see below).

// element
imagesLoaded( document.querySelector('#container'), function( instance ) {
  console.log('all images are loaded');
});
// selector string
imagesLoaded( '#container', function() {...});
// multiple elements
var posts = document.querySelectorAll('.post');
imagesLoaded( posts, function() {...});

Bind events with vanilla JS with .on(), .off(), and .once() methods.

var imgLoad = imagesLoaded( elem );
function onAlways( instance ) {
  console.log('all images are loaded');
}
// bind with .on()
imgLoad.on( 'always', onAlways );
// unbind with .off()
imgLoad.off( 'always', onAlways );

Background

Detect when background images have loaded, in addition to <img>s.

Set { background: true } to detect when the element's background image has loaded.

// jQuery
$('#container').imagesLoaded( { background: true }, function() {
  console.log('#container background image loaded');
});

// vanilla JS
imagesLoaded( '#container', { background: true }, function() {
  console.log('#container background image loaded');
});

See jQuery demo or vanilla JS demo on CodePen.

Set to a selector string like { background: '.item' } to detect when the background images of child elements have loaded.

// jQuery
$('#container').imagesLoaded( { background: '.item' }, function() {
  console.log('all .item background images loaded');
});

// vanilla JS
imagesLoaded( '#container', { background: '.item' }, function() {
  console.log('all .item background images loaded');
});

See jQuery demo or vanilla JS demo on CodePen.

Events

always

// jQuery
$('#container').imagesLoaded().always( function( instance ) {
  console.log('ALWAYS - all images have been loaded');
});

// vanilla JS
imgLoad.on( 'always', function( instance ) {
  console.log('ALWAYS - all images have been loaded');
});

Triggered after all images have been either loaded or confirmed broken.

done

// jQuery
$('#container').imagesLoaded().done( function( instance ) {
  console.log('DONE  - all images have been successfully loaded');
});

// vanilla JS
imgLoad.on( 'done', function( instance ) {
  console.log('DONE  - all images have been successfully loaded');
});

Triggered after all images have successfully loaded without any broken images.

fail

$('#container').imagesLoaded().fail( function( instance ) {
  console.log('FAIL - all images loaded, at least one is broken');
});

// vanilla JS
imgLoad.on( 'fail', function( instance ) {
  console.log('FAIL - all images loaded, at least one is broken');
});

Triggered after all images have been loaded with at least one broken image.

progress

imgLoad.on( 'progress', function( instance, image ) {
  var result = image.isLoaded ? 'loaded' : 'broken';
  console.log( 'image is ' + result + ' for ' + image.img.src );
});

Triggered after each image has been loaded.

Development on imagesLoaded is sponsored by Metafizzy. Metafizzy makes delightful UI libraries that use imagesLoaded:

Properties

LoadingImage.img

Image - The img element

LoadingImage.isLoaded

Boolean - true when the image has succesfully loaded

imagesLoaded.images

Array of LoadingImage instances for each image detected

var imgLoad = imagesLoaded('#container');
imgLoad.on( 'always', function() {
  console.log( imgLoad.images.length + ' images loaded' );
  // detect which image is broken
  for ( var i = 0, len = imgLoad.images.length; i < len; i++ ) {
    var image = imgLoad.images[i];
    var result = image.isLoaded ? 'loaded' : 'broken';
    console.log( 'image is ' + result + ' for ' + image.img.src );
  }
});

Browserify

imagesLoaded works with Browserify.

npm install imagesloaded --save
var imagesLoaded = require('imagesloaded');

imagesLoaded( elem, function() {...} );

Use .makeJQueryPlugin to make to use .imagesLoaded() jQuery plugin.

var $ = require('jquery');
var imagesLoaded = require('imagesloaded');

// provide jQuery argument
imagesLoaded.makeJQueryPlugin( $ );
// now use .imagesLoaded() jQuery plugin
$('#container').imagesLoaded( function() {...});

Webpack

Install imagesLoaded with npm.

npm install imagesloaded

You can then require('imagesloaded').

// main.js
var imagesLoaded = require('imagesloaded');

imagesLoaded( '#container', function() {
  // images have loaded
});

Use .makeJQueryPlugin to make .imagesLoaded() jQuery plugin.

// main.js
var imagesLoaded = require('imagesloaded');
var $ = require('jquery');

// provide jQuery argument
imagesLoaded.makeJQueryPlugin( $ );
// now use .imagesLoaded() jQuery plugin
$('#container').imagesLoaded( function() {...});

Run webpack.

webpack main.js bundle.js

RequireJS

imagesLoaded works with RequireJS.

You can require imagesloaded.pkgd.js.

requirejs( [
  'path/to/imagesloaded.pkgd.js',
], function( imagesLoaded ) {
  imagesLoaded( '#container', function() { ... });
});

Use .makeJQueryPlugin to make .imagesLoaded() jQuery plugin.

requirejs( [
  'jquery',
  'path/to/imagesloaded.pkgd.js',
], function( $, imagesLoaded ) {
  // provide jQuery argument
  imagesLoaded.makeJQueryPlugin( $ );
  // now use .imagesLoaded() jQuery plugin
  $('#container').imagesLoaded( function() {...});
});

You can manage dependencies with Bower. Set baseUrl to bower_components and set a path config for all your application code.

requirejs.config({
  baseUrl: 'bower_components/',
  paths: { // path to your app
    app: '../'
  }
});

requirejs( [
  'imagesloaded/imagesloaded',
  'app/my-component.js'
], function( imagesLoaded, myComp ) {
  imagesLoaded( '#container', function() { ... });
});

Browser support

Use imagesLoaded v3 for IE8 support.

MIT License

imagesLoaded is released under the MIT License. Have at it.