Create a popup for sharing something on social media.

socialShare.js

/**
 *  Social sharing popup window
 */
var jsSocialShares = document.querySelectorAll('.social-share a');
if(jsSocialShares) {
    [].forEach.call(jsSocialShares, function(anchor) {
        anchor.addEventListener('click', function(e) {

            var url = this.href,
                width = 500,
                height = 300,
                left = (screen.width / 2) - (width / 2),
                top = (screen.height / 2) - (height / 2);

            if(/^(f|ht)tps?:\/\//i.test(url) || /^mailto/i.test(url)) {
                e.preventDefault();
                window.open(
                    url,
                    '',
                    'menubar=no,toolbar=no,resizable=yes,scrollbars=yes,width=' + width + ',height=' + height + ',top=' + top + ',left=' + left
                );
            }

        });
    });
}