List All links on a web page

listAll.js

(function (){
    var aTags = document.getElementsByTagName("a");
    var aTagsArray = [].slice.call(aTags);
    aTagsArray.map(function (a) {
        var result = "#";
        if (a.getAttribute) {
            result = a.getAttribute("href") || result;
        }
        return result;
    }).filter(function (link) {
        return link.startsWith("http"); 
    }).forEach(function (link) {
        console.log(link);
    });
})();