var xmlhttp = new XMLHttpRequest();
xmlhttp.overrideMimeType("application/json");
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
    var cost = JSON.parse(this.responseText);
    document.getElementById('cost').innerHTML = cost[x];
    document.getElementById('costwithboard').innerHTML = cost[y];
    console.log("test");
  }
};
console.log("test")
xmlhttp.open("GET", "colleges.json", true);
xmlhttp.send();