decentralized-id.github.io/assets/js/mod_outer_links.js

$(function () {
    // add `target="_blank"` to outgoing links.
    var host = document.location.host;
    $("a[href]").each(function() {
        var re = new RegExp(host, "g");
        if ($(this).attr("href").match(/\/\//) && !$(this).attr("href").match(re)) {
            $(this).attr("target", "_blank");
        }
    });
});