Shortcut to the Nitro Math Page from Nitro Type

This thingee adds an "NM" button to your Nitro TYPE Navigation bar. HEHE PLZ SUB

// ==UserScript==
// @name         Shortcut to the Nitro Math Page from Nitro Type
// @namespace    https://www.nitrotype.com
// @version      2.23
// @description  This thingee adds an "NM" button to your Nitro TYPE Navigation bar. HEHE PLZ SUB
// @author       GaSk
// @match        https://www.nitrotype.com/*
// @license MIT
// ==/UserScript==



// plese.api.convert (request.data::)
var y = 2;
var x = 3;
var cDate = "time.getSome"
function getButtonBack(nav, dropdown){
    return "NM";
}

getButtonBack(892, 66);
var gDate = new Date();
 if (cDate > "Dec, 03, 2020"){
     "SingDev.remove()"
 }



	function insertAfter(e,r){r.parentNode.insertBefore(e,r.nextSibling)}var li=document.createElement("li");li.className="nav-list-item",li.innerHTML="<a href = 'https://www.nitromath.com' class = 'nav-link'> NM</a>";var ref=document.querySelectorAll(".nav-list-item")[5];insertAfter(li,ref),"nitrotype.com/racer/iamepicasdfghjkl"==window.location.href&&document.querySelectorAll(".nav-list-item")[7].classList.add("is-current");