I am looking for a way to test my JavaScript without using html.

Similar to JS Fiddle or JS Bin, But I want to be able to execute the JavaScript in the output window without having to place it inside HTML

eg 

```
function out()
{
var x = 5;
var y = 10;
z = x * y;
return z;
} 

alert(out());

```

and have the output window print 50

Thanks for the help

Atraù