Service Worker: Ignore request endpoints with RegEx

example.js

// This polyfill provides Cache.add(), Cache.addAll(), and CacheStorage.match(),
// which are not implemented in Chrome 40.
importScripts('js/cache-polyfill.js') // find it on the internet
var version = 'v01234567'

var ignoreRequests = new RegExp('(' + [
  '\.com/', // customize to your use case, home page
  '/page1',
  '/perfil',
  '/perfil\/(.*)', // ignore also IDs
  '/feedback'].join('(\/?)|\\') + ')$')

/*
  examples

  ignoreRequests.test('https://site.com/') // true
  ignoreRequests.test('https://site.com/any/') // false, will be cached
  ignoreRequests.test('https://site.com/perfil/123') // true
*/

function onFetch(event) {
  if (ignoreRequests.test(event.request.url)) {
    console.log('ignored: ', event.request.url)
    // request will be networked
    return
  }

  event.respondWith(fetchAndCache(event))
}

function fetchAndCache(event) {
  return caches
    .match(event.request)
    .then(function(cached) {
      var networked = fetch(event.request)
        .then(fetchedFromNetwork(event))
      return cached || networked
    })
}

function fetchedFromNetwork(event) {
  return function transform(response) {
    var cacheCopy = response.clone()
    caches
      .open(version)
      .then(function add(cache) {
        cache.put(event.request, cacheCopy)
      })
      .then(function() {
        // console.log('WORKER: fetch response stored in cache.', event.request.url)
      })
    return response
  }
}

self.addEventListener('fetch', onFetch)