I'm currently using notepad. In my experience, when I used the alert function and console.log and window.prompt, and function(), it did not work. It took me a couple of minutes and some tinkering to find that one of the variables that I was declaring had '-' instead of '=". All of the other variables had '='. There was only one variable with the wrong symbol. That variable was not even part of the output. After I corrected it, it worked.