$('#jstree_demo_div').jstree({
    'core' : {
        'data' : [

            {"id":"index_0","text":"test_folder","parent":"#","icon":""},
            {"id":"index_1","text":"vide","parent":"index_0","icon":""},
            {"id":"index_2","text":"05nesf-sdfdgd.mp4","parent":"index_1","icon":"fa fa-film"},
            {"id":"index_3","text":"naissance-d-une-fleur-ouwzp9me-41.mp4","parent":"index_0","icon":"fa fa-film"},
            {"id":"index_4","text":"za05nesfsdfsdg.mp4","parent":"index_0","icon":"fa fa-film"},
            {"id":"index_5","text":"ddd","parent":"#","icon":""},
            {"id":"index_6","text":"05nes-ibw6q9me-41.mp4","parent":"index_5","icon":"fa fa-film"},
            {"id":"index_7","text":"tom-jerry-soundscape-ttar8gme-41.mp4","parent":"#","icon":"fa fa-film"},
            {"id":"index_8","text":"aaes-qmc8q-9me-41.mp4","parent":"#","icon":"fa fa-film"},
            {"id":"index_9","text":"bb05nes.mp4","parent":"#","icon":"fa fa-film"}
        ]
    },
    'plugins' : ['sort','types'],
    'sort' : function(a, b) {
        //What is the function of sorting
    },
});