How to dynamically append a CSS file

This code snippet allows you to dynamically append a CSS file to your document’s head. It can be used inside any JavaScript code or for custom A/B experiments.

JavaScript

function v8LoadCSS(path) {
    console.log('Requesting ' + path + '... in progress');

    if (document.createStyleSheet) {
        try {
            console.log('Loading ' + path + '... in progress');

            document.createStyleSheet(path);
        } catch (e) {
            console.log('Failed dynamically loading stylesheet.');
        }
    } else {
        var css;

        css = document.createElement('link');
        css.rel = 'stylesheet';
        css.type = 'text/css';
        css.media = 'all';
        css.href = path;

        document.getElementsByTagName('head')[0].appendChild(css);
        console.log('Appending ' + path + ' to document head... success');
    }
}

Usage

v8LoadCSS('/path/to/stylesheet.css');

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Ciprian Popescu

Technical SEO Specialist, JavaScript Programmer and Senior Full Stack Developer. On a quest to experiment with Canvas, WebGL, JavaScript, SEO and WordPress, among many other things. Founder of WPDublin and SpeedFactor, co-organizer of Dublin WordPress Meetup group.

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