Batch Query Steam Keys for activation on SteamWorks

SteamQueryBatchKey.js

// 1. GO TO SteamWorks, into the Query CD Key page, here: https://partner.steamgames.com/querycdkey/
// 2. Fill in your keys below:
// 3. Go to DevTools, Console, and paste all of this here there!
// 4. Report will be printed to the console.

keys = `
0ZQR4-N0H7K-AEJ77
D05V5-P47AP-4ET3Q
GGJZ5-ZN0BR-F74C5
FWZP4-2IXHB-GYV3A
`

var keylist = keys.split("\n");

keylist.forEach(key => {
	if(key.length<17) return;
	function reqListener () {
	  let body = this.responseText;
	  let result = body.split('<h2>Activation Details</h2>')[1];
		  if (!result && !err) {
			console.log('Error quering CD Key ' + key);
		  } 
		  result = result.split('</table>')[0];
		  result = result.match(/<td>.*<\/td>/g);
		  result = result.map(function (line) {
			return line.replace(/<[^>]*>/g, '');
		  });
		  let line = [key, (result[0] === 'Activated') ? '"' + result[1] + '"' : result[0]].join('\t');
		  console.log(line);
	}
	var oReq = new XMLHttpRequest();
	oReq.addEventListener("load", reqListener);
	oReq.open("GET", "https://partner.steamgames.com/querycdkey/cdkey?cdkey="+key+"&method=Query");
	oReq.send();
});

Just wanted to say thank you, I've used your code to make one that returns a list of not yet used keys.