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# imagesLoaded
<p class="tagline">JavaScript is all like "You images done yet or what?"</p>
[imagesloaded.desandro.com](https://imagesloaded.desandro.com)
Detect when images have been loaded.
## Install
### Download
+ [imagesloaded.pkgd.min.js](https://unpkg.com/imagesloaded@5/imagesloaded.pkgd.min.js) minified
+ [imagesloaded.pkgd.js](https://unpkg.com/imagesloaded@5/imagesloaded.pkgd.js) un-minified
### CDN
``` html
<script src="https://unpkg.com/imagesloaded@5/imagesloaded.pkgd.min.js"></script>
<!-- or -->
<script src="https://unpkg.com/imagesloaded@5/imagesloaded.pkgd.js"></script>
```
### Package managers
Install via npm: `npm install imagesloaded`
Install via Yarn: `yarn add imagesloaded`
## jQuery
You can use imagesLoaded as a jQuery Plugin.
``` js
$('#container').imagesLoaded( function() {
// images have loaded
});
// options
$('#container').imagesLoaded( {
// options...
},
function() {
// images have loaded
}
);
```
`.imagesLoaded()` returns a [jQuery Deferred object](https://api.jquery.com/category/deferred-object/). This allows you to use `.always()`, `.done()`, `.fail()` and `.progress()`.
``` js
$('#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.
``` js
imagesLoaded( elem, callback )
// options
imagesLoaded( elem, options, callback )
// you can use `new` if you like
new imagesLoaded( elem, callback )
```
+ `elem` _Element, NodeList, Array, or Selector String_
+ `options` _Object_
+ `callback` _Function_ - function triggered after all images have been loaded
Using a callback function is the same as binding it to the `always` event (see below).
``` js
// 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.
``` js
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.
``` js
// 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](https://codepen.io/desandro/pen/pjVMPB) or [vanilla JS demo](https://codepen.io/desandro/pen/avKooW) on CodePen.
Set to a selector string like `{ background: '.item' }` to detect when the background images of child elements have loaded.
``` js
// 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](https://codepen.io/desandro/pen/avKoZL) or [vanilla JS demo](https://codepen.io/desandro/pen/vNrBGz) on CodePen.
## Events
### always
``` js
// 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.
+ `instance` _imagesLoaded_ - the imagesLoaded instance
### done
``` js
// 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
``` js
$('#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
``` js
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.
+ `instance` _imagesLoaded_ - the imagesLoaded instance
+ `image` _LoadingImage_ - the LoadingImage instance of the loaded image
<!-- sponsored -->
## Properties
### LoadingImage.img
_Image_ - The `img` element
### LoadingImage.isLoaded
_Boolean_ - `true` when the image has successfully loaded
### imagesLoaded.images
Array of _LoadingImage_ instances for each image detected
``` js
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 );
}
});
```
## Webpack
Install imagesLoaded with npm.
``` bash
npm install imagesloaded
```
You can then `require('imagesloaded')`.
``` js
// main.js
var imagesLoaded = require('imagesloaded');
imagesLoaded( '#container', function() {
// images have loaded
});
```
Use `.makeJQueryPlugin` to make `.imagesLoaded()` jQuery plugin.
``` js
// main.js
var imagesLoaded = require('imagesloaded');
var $ = require('jquery');
// provide jQuery argument
imagesLoaded.makeJQueryPlugin( $ );
// now use .imagesLoaded() jQuery plugin
$('#container').imagesLoaded( function() {...});
```
Run webpack.
``` bash
webpack main.js bundle.js
```
## Browserify
imagesLoaded works with [Browserify](https://browserify.org/).
``` bash
npm install imagesloaded --save
```
``` js
var imagesLoaded = require('imagesloaded');
imagesLoaded( elem, function() {...} );
```
Use `.makeJQueryPlugin` to make to use `.imagesLoaded()` jQuery plugin.
``` js
var $ = require('jquery');
var imagesLoaded = require('imagesloaded');
// provide jQuery argument
imagesLoaded.makeJQueryPlugin( $ );
// now use .imagesLoaded() jQuery plugin
$('#container').imagesLoaded( function() {...});
```
## Browser support
+ Chrome 49+
+ Firefox 41+
+ Edge 14+
+ iOS Safari 8+
Use [imagesLoaded v4](https://github.com/desandro/imagesloaded/tree/v4.1.4) for Internet Explorer and other older browser support.
## Development
Development uses Node.js v16 with npm v8
``` bash
nvm use
```
## MIT License
imagesLoaded is released under the [MIT License](https://desandro.mit-license.org/). Have at it.
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