XHR_examples.md

• via https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/Using_XMLHttpRequest

function reqListener () {
  console.log(this.responseText);
}

var oReq = new XMLHttpRequest();
oReq.addEventListener("load", reqListener);
oReq.open("GET", "http://www.example.org/example.txt");
oReq.send();

• via https://stackoverflow.com/a/42533572/2145103

var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
        document.getElementById("demo").innerHTML = this.responseText;
        var obj=this.responseText;
        var obj1 = JSON.parse(obj);
        a0 = obj1.a0;
    }
};
xhttp.open("GET", "../data/data.json", true);
xhttp.send();