XMLHttpRequest GET POST

XMLHttpRequest get post.js

  function GET(url) {
    return new Promise(function(resolve, reject) {
      var request = new XMLHttpRequest()
      request.open('GET', url, true)
      request.onreadystatechange = () => {
        console.log(' - readyState:' + request.readyState + ' status:' + request.status)
        if (request.readyState == 4) {
          resolve(request.responseText)
        }
      }
      request.onerror = (a,b,c)=>{
        console.log(a,b,c);
      }
      request.send()
    });
  }

  function POST(url, data) {
    return new Promise(function(resolve, reject) {
      var request = new XMLHttpRequest()
      request.open('POST', url, true)
      request.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
      request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
      request.onreadystatechange = () => {
        console.log(' - readyState:' + request.readyState + ' status:' + request.status)
        if (request.readyState == 4) {
          resolve(request.responseText)
        }
      }
      request.send(data)
    });
  }