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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Review Array Basics

Peter Hearty
Peter Hearty
9,854 Points
Posted by Peter Hearty
Peter Hearty
9,854 Points

Javascript loops, arrays and objects. Quiz question 1 of 5

The question asks to finish the code below to open an alert with the message "arrays are awesome". The code in the question is like this;

var messages = ["hello", "welcome", "Javascript!"; "arrays are awesome", "Goodbye"];

_______ (messages[ ]);

I would have thought the answer is:

alert(messages["arrays are awesome"];

Can anyone help me

6 Answers

Abe Layee
Abe Layee
8,378 Points
Abe Layee
Abe Layee
8,378 Points

Array index starts from 0 up. We human start at one but computers start at 0. In order to alert " arrays are awesome", you need to find the index of it. so from 0,1,2,3,4. In this case is 3. So you want to pass the number 3 into the brackets. like this

var messages = ["hello", "welcome", "Javascript!"; "arrays are awesome", "Goodbye"];
alert (messages[3]);
Unsubscribed User
Unsubscribed User
6,144 Points
Unsubscribed User
Unsubscribed User
6,144 Points

You have to use a number inside the brackets.

Michael Brown
Michael Brown
7,431 Points
Michael Brown
Michael Brown
7,431 Points

I agree the answer is "3". But Treehouse doesn't agree with us:

Finish the code below to open an alert with the message "Arrays are awesome" in it: 

var messages = [ "Hello", "Welcome", "JavaScript!", "Arrays are awesome", "Goodbye"];

( messages[    ] );

I answered with the number "3" and the response was: "Bummer! Unfortunately, that answer is incorrect."

But I think "3" is the correct answer.

Unsubscribed User
Unsubscribed User
6,144 Points

The number 3 is the correct answer but don't forget to add the alert before the parentheses.

Michael Brown
Michael Brown
7,431 Points

Ohhhhh. Thanks, Antoine. I didn't see an "answer blank" ahead of "( messages [ ] );" to clue me into filling in 2 blanks, though I should have seen the indentation and parenthesis and realized something should go in front of those parenthesis.

 var messages = [ "Hello", "Welcome", "JavaScript!", "Arrays are awesome", "Goodbye"];
           ( messages[           ] );
Rich Braymiller
Rich Braymiller
7,119 Points
Rich Braymiller
Rich Braymiller
7,119 Points

no its not! alert 3 should be the answer? it's not? anyone care to enlighten me??!?!?!?!?!?~!?

Lee Puckett
Lee Puckett
12,539 Points
Lee Puckett
Lee Puckett
12,539 Points

I was making the mistake of typing in the brackets, but they are already there.

Prsicilla Anesu Muzerengwa
Prsicilla Anesu Muzerengwa
12,577 Points
Prsicilla Anesu Muzerengwa
Prsicilla Anesu Muzerengwa
12,577 Points

var messages = [ "Hello", "Welcome", "JavaScript!", "Arrays are awesome", "Goodbye"]; alert( messages[3] );