import QtQuick 2.5

Rectangle {
    Component.onCompleted: {
        var arr = [];

        arr.push({name:"a", value:0});
        arr.push({name:"b", value:0});
        arr.push({name:"c", value:0});
        arr.push({name:"d", value:0});
        arr.push({name:"e", value:0});
        arr.push({name:"f", value:0});

        arr.sort(function(a,b) { return a.value - b.value });

        //console.log(arr.map(function(el) { return el.name }));
        console.log(
            arr[0].name + "," + arr[1].name + "," +
            arr[2].name + "," + arr[3].name + "," +
            arr[4].name + "," + arr[5].name);
    }
}