mini xhr library

xhr.js

// factory
const http = () => {
  const 
    XHR = () => {
      return new XMLHttpRequest()
    },
    onload = (req, fn, parse = true) => {
      req.onload = () => {
        if (req.status >= 200 && req.status < 400) {
          let data = req.responseText
          ;(parse) && (data = JSON.parse(data))
          fn(data) // execute callback with data
        }
      }
    }
  
  return {
    post (url) {
      const req = XHR()
      req.open('POST', url, true)
      req.setRequestHeader(
        'Content-Type',
        'application/x-www-form-urlencoded; charset=UTF-8'
      );
      request.send(data)
    },
    
    get (url, fn, parse) {
      const req = XHR()
      req.open('GET', url, true)
      onload(req, fn, parse)
      req.send()
    }
  }
}

// app
const
  xhr = http(),
  url = 'https://teamtreehouse.com/abrahamjuliot.json'

console.time("Response Time")
xhr.get(url, (data) => {
  console.log(`${data.name} has ${data.points.total} points`)
  console.timeEnd("Response Time")
});

console.log('do something else while I\'m waiting')
//test at https://repl.it/FJhN/25