Concecatenation - What is wrong with this code?

Question

Answer 1

Its this line
alert("You answered " + firstAnswer + "\r "The correct answer is packet-switching.");
It should be!!!
alert("You answered " + firstAnswer + "\r The correct answer is packet-switching.");

Extra quotation marks.
I get a yellow triangle in the bottom left corner of my ie browser. If I double click on this it tells me the error and the line of the error!!
If you put a basic alert in your code you will also know what lines are valid.
Like a simple
alert("Hello");
That is all it takes.

The best programmers can debug their own code!!

Answer 2

my html checker indicated there was a parameter missing in your script code