function sortByTitle() {
    var sort_by_title = function (a, b) {
        let x = a.getElementsByClassName('card-title')[0];
        let y = b.getElementsByClassName('card-title')[0];
        console.log(x);
        return x.innerHTML.toLowerCase().localeCompare(y.innerHTML.toLowerCase());
    };

    var notes = document.getElementsByClassName("sortable");
    var notesArr = [];
    for (const node of notes) {
        notesArr.push(node);
    }
    console.log(notesArr);
    notesArr.sort(sort_by_title);
    console.log(notesArr);
    let parent = document.getElementById('sortable-wrapper');
    for (let elem of notesArr) {
        parent.appendChild(elem);
    }
}