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    objectFitPolyfillpublic

    object-fit-polyfill

    A polyfill for browsers that don't support the object-fit CSS property. Unsure of what the object-fit does? Essentially object-fit is to <img> tags what background-size is to background-image. You can check out the MDN page for more details.

    Features

    • Lightweight - 2.8KB (1.8KB with the basic version)
    • Vanilla Javascript - works with or without jQuery
    • Supports IE 9+, iOS 7-, and Android 4.4-
    • Supports object-position
    • Works with image, video, srcset, and picture
    • Plug and play - just include the .js file and set data attributes on your elements.
    • Please note: This plugin makes the assumption that the parent container is acting as a picture frame, and already has a height & width set.

    Demo

    You can check out the bare-bones demo here. Note that the plugin simply won't do anything if you're on a browser that already supports object-fit, so you'll want to test it on IE or older iOS/Android browsers.

    How does it work?

    Unlike object-fit-images or Primož Cigler's method (both excellent alternatives if you'd rather not use this one), this polyfill does not set a background image on the parent container, but instead resizes and repositions the image (using inline CSS for height, width, absolute positioning, and negative margins).

    The polyfilled item will receive the class object-fit-polyfill if styling issues occur that require overrides.

    Why bother?

    If you're wondering: why bother using <img> tags versus background-image? Here's a couple reasons:

    1. <img> tags have better SEO/crawling visibility.
    2. In cases where images are dynamically returned and can't simply be added to your stylesheets (e.g., CMS's), you're forced to inline your background-image. This solves that somewhat-ugly-looking inline CSS.
    3. background-image doesn't work with video or picture elements.

    Of course, there's still plenty of cases where using a background image makes more sense than a regular image.

    Usage

    Initialization:

    <!-- Minimum CSS -->
    <style>
    .container {
      width: 25em; /* Or whatever you want it to be */
      height: 25em; /* Or whatever you want it to be */
    }
    .media {
      width: 100%;
      height: 100%;
      object-fit: cover; /* Or whatever object-fit you want */
    }
    </style> 
     
    <!-- Minimum HTML -->
    <div class="container">
      <img class="media" data-object-fit="cover" src="https://unsplash.it/800/600/" alt="">
    </div>
     
    <script src="dist/objectFitPolyfill.min.js"></script>

    Customized object-fit/object-position:

    <div class="container">
      <img class="media" data-object-fit="contain" data-object-position="top left" src="https://unsplash.it/800/600/" alt="">
    </div>
     
    <div class="container">
      <img class="media" data-object-fit="none" data-object-position="25% 75%" src="https://unsplash.it/800/600/" alt="">
    </div>
     
    <div class="container">
      <img class="media" data-object-fit="scale-down" data-object-position="3em -1em" src="https://unsplash.it/800/600/" alt="">
    </div>

    If you're only interested in using the basic polyfill (which assumes object-fit: cover and object-position: 50% 50%), you can save yourself some bytes by using:

    <div class="container">
      <img class="media" data-object-fit src="https://unsplash.it/800/600/" alt="">
    </div>
     
    <script src="dist/objectFitPolyfill.basic.min.js"></script>

    Installation via package managers

    Alternatively, if you prefer not to manually add Javascript files to your sites, you can use bower and npm like so:

    bower install objectFitPolyfill
    
    npm install objectFitPolyfill
    

    Advanced usage

    If you need to dynamically call the polyfill on the fly for any reason (for example, carousels or lazy-loaded images), you can do so quite easily:

    // Rerun the polyfill on all elements with the data attribute
    objectFitPolyfill();
     
    // Rerun the polyfill on a single DOM node
    var element = document.querySelector('.foo');
    objectFitPolyfill(element);
     
    // Rerun the polyfill on multiple elements
    var elements = document.querySelectorAll('.bar');
    objectFitPolyfill(elements);
     
    // Rerun the polyfill with a jQuery selector
    objectFitPolyfill($('.baz'));

    Requests?

    If you'd like to make feature requests such as IE 8- or adding object-position support for Safari, feel free to open an issue or pull request! It's doable and on my radar, but I probably won't get to it without some prodding.

    install

    npm i objectFitPolyfill

    Downloadslast 7 days

    2,318

    version

    2.1.1

    license

    ISC

    repository

    github.com

    last publish

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