Trace in console

Question

Hello, and good Morning.
I am tracing with
alert(padre.item(i).name +   "      --->     "   +  _banda[0])
there are any form to print in the console.The same that trace or printf or print in python.
It is very slow a popup all the time.
Thanks for all

Answer 1

Thanks !!!!
Also Dan it is posible include js files or another jsx files. This not work for me, if you dont mind see the code.
include(file) {
var script = document.createElement('script');
script.src = file; script.type = 'text/javascript';
script.defer = true;
document.getElementsByTagName('head').item(0).appendChild(script);
} /* include any js files here */
include('jsTrace.js');
http://www.koders.com/javascript/fid3FFB0865968C3F1CE722BF1BF4670372D20F08C3.aspx