Parse URL query parameters in ES6 (immutable version using reduce instead of map)

parseURLParameters.js

const getUrlParams = (search = ``) => {
  const hashes = search.slice(search.indexOf(`?`) + 1).split(`&`)
  return hashes.reduce((acc, hash) => {
    const [key, val] = hash.split(`=`)
    return {
      ...acc,
      val: decodeURIComponent(val)
    }
  }, {})
}

console.log(getUrlParams(window.location.search))