Press Numpad 0 to show your language streaks

langstreak.user.js

// ==UserScript==
// @name       Display language streaks
// @namespace  http://xaasd.werd.asd
// @version    0.2
// @description: Press Numpad 0 to display language streaks. Wrapper for code from pinkodoug 
// @include http://www.duolingo.com/*
// @include https://www.duolingo.com/*
// @copyright  2014+ 
// ==/UserScript==

document.addEventListener('keyup', function(event) {
    if(event.keyCode === 96){ // Numpad 0
       var expAlert="Site Streak: "+duo.user.attributes.site_streak+"\n";
       for(var i in duo.user.attributes.languages){ 
         if (duo.user.attributes.languages[i].learning){
             expAlert=expAlert+duo.user.attributes.languages[i].language_string+" Streak: "+duo.user.attributes.languages[i].streak;
             expAlert=expAlert+" Lvl: "+duo.user.attributes.languages[i].level+" XP:"+duo.user.attributes.languages[i].points+" lvlup: ";
             expAlert=expAlert+duo.user.attributes.languages[i].to_next_level+"\n";
         }
        }
    window.alert(expAlert);
    }
});