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Instagram ID Viewer

View ID of user instagram

// ==UserScript==
// @name         Instagram ID Viewer
// @namespace    http://tampermonkey.net/
// @version      1.17
// @description  View ID of user instagram
// @author       Anonymous
// @match        https://www.instagram.com/*/*
// @grant        none
// ==/UserScript==
window.onload = main;
function main(){
    document.querySelector('#react-root > section > main > div > header > section > div > h1').innerText += ', ID: '+window._sharedData.entry_data.ProfilePage[0].graphql.user.id;
    oldT = document.querySelector('#react-root > section > main > div > header > section > div > h1').innerText;
    vc();
}

function vc(){
   let newT = '';
   try{ newT = document.querySelector('#react-root > section > main > div > header > section > div > h1').innerText || null;} catch(e){newT = null;}
   if(newT == null) {setTimeout(vc,100);return;}
   if(oldT !== newT) {
       document.querySelector('#react-root > section > main > div > header > section > div > h1').innerText += ', ID: '+ getID(location.href);
       oldT = document.querySelector('#react-root > section > main > div > header > section > div > h1').innerText;
       setTimeout(vc,100);
   } else {
       setTimeout(vc,100);
   }
}

function getID(url,callback){
	xhr = new XMLHttpRequest();
	xhr.open('get',url,callback?true:false);
    xhr.send();
	if(callback !== undefined)
  		callback(xhr.responseText.split('"id":')[1].split(',')[0].split('"')[1]);
	else
		return xhr.responseText.split('"id":')[1].split(',')[0].split('"')[1];
}