var ctxCurrent;
var ctxWeb;

//get the SharePoint context
SP.SOD.executeFunc('sp.js', 'SP.ClientContext', loadContext);

function loadContext() {
    ctxCurrent = new SP.ClientContext.get_current();
    ctxWeb = ctxCurrent.get_web();
    loadAppTiles();
}

function loadAppTiles() {
    //get the appTiles
    var appTiles = ctxWeb.get_appTiles();
    ctxCurrent.load(appTiles);

    //go through them all - and find the app for 'class workspace provisioning';
    ctxCurrent.executeQueryAsync(
        function onQuerySucceeded(sender, args) {
            if (appTiles.get_count() > 0) {
                //go through the appTiles - get the TITLE and TARGET - and jQuery them into the UL
                for (var i = 0; i < appTiles.get_count() ; i++) {
                    //get the tile at the "i" number
                    appTile = appTiles.getItemAtIndex(i);

                    //grab the title and url
                    appTitle = appTile.get_title();
                    appUrl = appTile.get_target();

                    //append to the UL - using jQuery
                    var newLi = "<li><a href='" + appUrl + "' >" + appTitle + "</a></li>";
                    $jq('#currentApps ul').append(newLi);
                }
            }
        },
        function onQueryFailed(sender, args) {
            console.error('getAppTile. Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());
        }
    );
}