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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Build a Quiz Challenge, Part 1 Solution

Brad Richardson
PLUS
Brad Richardson
Courses Plus Student 1,843 Points
Posted by Brad Richardson
Brad Richardson
Courses Plus Student 1,843 Points

what is the purpose of

function print(message) {
  document.write(message);
}

why do i need this in my code?

3 Answers

Matthew Rigdon
Matthew Rigdon
8,223 Points
Matthew Rigdon
Matthew Rigdon
8,223 Points

It is a way of simplifying your code. Instead of calling document.write continually with code, you call a much simpler "print(words)" function.

This isn't needed, but it is easier to read (for yourself), and for others reading your code.

Brad Richardson
PLUS
Brad Richardson
Courses Plus Student 1,843 Points
Brad Richardson
Brad Richardson
Courses Plus Student 1,843 Points

for instance here 

var questions = [
  ['What is your favorite musician?', 'megadeth'],
  ['What is the greatest country in the world?', 'usa'],
  ['Do monkeys fly?', 'no']
];
var correctAnswers = 0;
var question;
var answer;
var response;
var html;

function print(message) {
  document.write(message);
}

for (var i = 0; i < questions.length; i += 1 ) {
  question = questions[i][0];
  answer = questions[i][1];
  response = (prompt(question));
  if (response === answer) {
   correctAnswers += 1; 
  }
}

html = "You got " + correctAnswers + " question(s) right.";
print(html);

why is

function print(message) {
  document.write(message);
}

placed in the middle of the code instead of at the end?