print_r в javascript

function print_r(arr, level) {

    var print_red_text = "";

    if(!level) level = 0;

    var level_padding = "";

    for(var j=0; j<level+1; j++) level_padding += "    ";

    if(typeof(arr) == 'object') {

        for(var item in arr) {

            var value = arr[item];

            if(typeof(value) == 'object') {

                print_red_text += level_padding + "'" + item + "' :\n";

                print_red_text += print_r(value,level+1);

		} 

            else 

                print_red_text += level_padding + "'" + item + "' => \"" + value + "\"\n";

        }

    } 



    else  print_red_text = "===>"+arr+"<===("+typeof(arr)+")";

    return print_red_text;

}