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Random Imgur Images Using Vanilla JavaScript

on in AJAX and Fetching Data, JavaScript DOM
Last modified on

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I found this old code I used for an old forum a long time ago, and I decided to bring it up-to-date and see if it still works. Turns out is does! I have improved the code a bit, added Flex CSS and lazy loading.

Using vanilla JavaScript, without external dependencies, you can create a script to fetch Imgur images. This functionality can be utilized for various purposes, from building image galleries to setting backgrounds in web applications. The code snippet provides access to Imgur’s repository, offering a practical tool to integrate the platform’s images into your web-based applications:

So, if you’re ever in need of getting 50 random Imgur images, use the code below. A live demo is available here.

⚠️ Note that, as Imgur is a free image sharing service, some images may not be suitable for work or for children.

HTML

<h1>Random Imgur Images</h1>

<p id="info"></p>

<ul id="images">
</ul>

<p>
    <button id="random">Show me more!</button>
</p>

JavaScript

Note the 2 places below, where the image is called:

https://i.imgur.com/${id}s.png

https://imgur.com/" + id + "s.png

The s suffix in the URLs above specifies a small thumbnail image. To fetch higher-resolution images, you can remove it. The code below is using small images.

let Imgur = {
    fetch: function(num) {
        let self = this;

        self.total = num;
        self.done = 0;
        self.failures = 0;
        self.start = +new Date;

        document.getElementById('images').innerHTML = '';

        for (let x = 0; x < num; x++) {
            self.hunt(function(id) {
                self.done++;

                const li = document.createElement('li');

                li.innerHTML = `<li><a href="https://imgur.com/${id}"><img src="https://i.imgur.com/${id}s.png" height="48" width="48" loading="eager"></a></li>`;

                document.getElementById('images').appendChild(li);

                self.update();
            });
        }
    },
    update: function() {
        let interval = new Date - this.start;

        function speed(v) {
            return (~~(v / interval * 1e5)) / 100;
        }
        document.getElementById('info').innerHTML = (this.done < this.total ? "Loading.. " + this.done + "/" + this.total + " (" + this.failures + " failures" + ") " : "Done. ") + "[" + speed(this.failures + this.done) + " req/s - " + speed(this.done) + " img/s]";
    },

    hunt: function(cb) {
        let self = this,
            id = self.random(5),
            img = new Image;
        self.update();
        img.src = "https://imgur.com/" + id + "s.png";
        img.onload = function() {
            if (img.width == 161 && img.height == 81) {
                // assume this is an imgur error image, and retry.
                fail();
            } else {
                cb(id);
            }
        }
        img.onerror = fail; // no escape.
        function fail() {
            self.failures++;
            self.update();
            self.hunt(cb);
        }
    },

    random: function(len) {
        let chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
        return len ? chars.charAt(~~(Math.random() * chars.length)) + this.random(len - 1) : "";
    }
};

document.getElementById('random').addEventListener('click', function(e) {
    Imgur.fetch(50);
});

CSS

#images {
    margin: 24px 0;
    display: flex;
    flex-wrap: wrap;
}
#images li {
    margin: 2px;
    width: 48px;
    height: 48px;
}
#images li img {
    border-radius: 3px;
}

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