Lightweight (8 Kb) ES5 javascript plugin without any dependencies, compatible with desktop and mobile devices.
Supports doubleclick, mousemove, mousewheel, doubletap, touchmove and pinch events.
- Option 1
yarn add zoom-by-ironex- include it in your scripts
import { zoom } from "zoom-by-ironex"; - https://www.npmjs.com/package/zoom-by-ironex
- Option 2
- Add
<script src="/directory/zoom-by-ironex.min.js"></script>to the bottom of html<body>
- Add
Whole script is just a single function called "zoom".
HTML
<div class="zoom"> <!-- Image container, this class can be renamed in settings -->
<img src="image-file" alt="Image">
</div>
CSS (Optional)
.zoom-transition{ // Transition class name can be renamed in settings
transition: -moz-transform ease 200ms;
transition: -ms-transform ease 200ms;
transition: -o-transform ease 200ms;
transition: -webkit-transform ease 200ms;
transition: transform ease 200ms;
}
JS
zoom();
Example call with all possible settings
zoom({
active: "zoom-active", // Class added to container when it is zoomed
transition: "zoom-transition", // Class added to images when they are being animated, class is removed after animation is finished
visible: "visible" // Class added to images after they are loaded,
zoom: "zoom" // Image container class
}, {
scaleDefault: 2, // Used on doubleclick, doubletap and resize
scaleDifference: 0.5, // Used on wheel zoom
scaleMax: 10, // Maximum zoom
scaleMin: 1, // Minimum zoom
scrollDisable: true, // Disable page scrolling when zooming an image
transitionDuration: 200, // This should correspond with zoom-transition transition duration
doubleclickDelay: 300 // // Delay between clicks - used when scripts decides if user performed doubleclick or not
}, (function ($container, zoomed) {
console.log(zoomed); // Callback, gets triggered whenever active class is added/removed from container, value of zoomed is true or false
}));
- doubleclick
- mousemove
- mousewheel
- doubletap
- touchmove
- pinch
Plugin checks if image container (zoom) exists on window.load and executes for each element with image container class. If there is no element with specified class present, then it stops.
- It means, that there is no need to check if image container (zoom) exists before executing the zoom function