try to take over the world!
// ==UserScript==
// @name New Userscript
// @namespace http://tampermonkey.net/
// @version 0.1
// @description try to take over the world!
// @author You
// @match https://www.dumpert.nl/*
// @grant none
// ==/UserScript==
(function() {
'use strict';
window.addEventListener('load', function() {
// your code here
var unsafeWindow = window.wrappedJSObject;
var volume = 0.9;
dump = unsafeWindow['dump'];
console.log("blermblermblamer");
console.log("volume is ingesteld op : " + volume);
dump.players[0].player.volume = volume;
}, false);
})();