JavaScript back to last page link

back-page-link.js

// Go back link functionality
// Requires HTML link with id="back-to-last-page" which is hidden by default with display: none;
    
if (window.history && window.history.pushState) {

    // Only display if referrer matches current hostname
    var matchHostname = new RegExp('http(s)?:\/\/' + window.location.host);
    if (matchHostname.test(document.referrer)) {

        // Show link and go back via History API
        $('#back-to-last-page').show();
        $('#back-to-last-page').click(function (e) {
            window.history.back();
            return false;
        });
    }
}