JQuery

Parsing PHP Variable to JS

var folders = <?php #echo json_encode($folders); ?>;

Selector

To select class -> .

To select id -> #

To select by vaiable -> '#' + varname or '.' + varname

Toggle

$('.select').hide();
$('.select').toggle("drop");

Click

$( ".g_button" ).click(function() {
    console.log($(this).attr('id'));
}