var liArray = document.getElementById("test-list").children;
    var arr = [];
    for(var i = 0 ; i < liArray.length ; i ++){
        arr.push(liArray[i]);
    }
    console.log(arr);

    arr.sort(function(a,b){return a.innerText.toUpperCase() > b.innerText.toUpperCase();});

    document.getElementById("test-list").innerHTML = "";
    for(var j = 0 ; j < arr.length ; j ++){
        document.getElementById("test-list").appendChild(arr[j]);
    }