JavaScript Examples

Fetch and filter (browser or Node.js)

const response = await fetch('https://api.datafornerds.io/v2/microsoft/windows-update-history.json');
const { metadata, data } = await response.json();

console.log(`${metadata.dataset}: ${metadata.recordCount} records`);

const win11Standard = data
  .filter(r => r.MajorVersion === 11 && r.ReleaseType === 'Standard')
  .sort((a, b) => b.ReleaseDate.localeCompare(a.ReleaseDate))
  .slice(0, 5);

console.table(win11Standard.map(r => ({
  Date: r.ReleaseDate,
  KB: r.KBNumber,
  Build: r.OSBuild,
})));

Build a lookup Map

const { data } = await fetch('https://api.datafornerds.io/v2/microsoft/language-codes.json')
  .then(r => r.json());

const lcidMap = new Map(data.map(r => [r.LanguageCode, r]));
const english = lcidMap.get('1033');
console.log(english.BCP47);       // en-US
console.log(english.Description); // English - United States

Efficient polling with ETag

let etag = null;

async function getUpdatesIfChanged() {
  const headers = etag ? { 'If-None-Match': etag } : {};
  const response = await fetch(
    'https://api.datafornerds.io/v2/microsoft/windows-update-history.json',
    { headers }
  );

  if (response.status === 304) {
    console.log('No changes');
    return null;
  }

  etag = response.headers.get('ETag');
  const data = await response.json();
  console.log(`Updated: ${data.metadata.recordCount} records`);
  return data;
}

Node.js: save to file

import { writeFile } from 'node:fs/promises';

const response = await fetch('https://api.datafornerds.io/v2/microsoft/m365-apps-update-history.json');
const payload = await response.json();

const current = payload.data
  .filter(r => r.ChannelName === 'Current Channel')
  .sort((a, b) => b.ReleaseDate.localeCompare(a.ReleaseDate));

await writeFile('m365-current-channel.json', JSON.stringify(current, null, 2));
console.log(`Saved ${current.length} records`);