nooLight/HttpClient.qml

import QtQuick 2.0

QtObject {
    id: root

    signal reply(var data)
    signal error(string text)

    function get(url) {
        var request = new XMLHttpRequest()

        request.open('GET', url)
        request.onreadystatechange = function () {
            if (request.readyState !== XMLHttpRequest.DONE) {
                return
            }

            if (request.status === 200) {
                root.reply(JSON.parse(request.responseText))
                return
            }

            root.error(qsTr("[%1] Request error: %2").
                       arg(request.status).
                       arg(request.statusText))
        }

        request.send()
    }
}