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JavaScript JavaScript Basics (Retired) Storing and Tracking Information with Variables The Variable Challenge Solution

undeclared prompt?

Why won't my code run? When I put it into a validator it said 'undeclared prompt'. It looks fine to me!

var person = prompt('Please, oh please! Type your name!'); var room = prompt("Okay now type a place."); var weapon = prompt("Alright, now type a weapon."); var story = "<h2>I believe that the killer was " + person; story += ", in the " room; story += ", with the" + weapon ".</h2>"; document.write(story);

2 Answers

Daniel Gauthier
Daniel Gauthier
15,000 Points

Hey Rachel,

I tweaked your code a little and it now runs as intended. You were missing a few plus signs and a space before printing out the weapon. Here's the final code:

var person = prompt('Please, oh please! Type your name!');
var room = prompt("Okay now type a place.");
var weapon = prompt("Alright, now type a weapon.");
var story = "I believe that the killer was " + person;
story += ", in the " + room;
story += ", with the " + weapon + ".";
document.write(story);

You'll still get the undefined prompt warning, and I'll let another Treehouse member explain this since this has come up in the past. Here's the link, different topic, same explanation:

https://teamtreehouse.com/community/console-was-used-before-it-was-defined

Finally, if you're interested in finding out a more efficient way to post your code into the forums, here are a few methods:

How to Post Code on the Forums

There are two ways to share your code on the forums here, excluding using external tools from outside of Treehouse.

Method One

The first method is to use a series of three ` (backticks, located at the top left of the keyboard) without any spaces on one line, paste all of your code starting on the second line, then closing the code block with a second series of three backticks. Take a peek at the link for the "Markdown Cheatsheet" located above the "Post Answer" button anytime you're about to post a comment or answer. Using this method, the code will look like this, if you replace the apostrophes with backticks:

'''css
(code here)
'''

Method 2

The second method is a little more convoluted, but it lets us look at your entire project and make our own copy to try fixing issues. I'll order the steps since it can be a little confusing the first time around:

  1. Open the workspace you're having trouble with.

  2. On the menu bar located to the left of the "Preview Workspace" button is the "Snapshot Workspace" (camera icon), click that.

  3. A popout will appear with another button that says "Take Snapshot", click that.

  4. It should create a new snapshot, which will appear beneath the "Take Snapshot" button in the popout. Click the snapshot you want to share.

  5. The snapshot should open a new browser tab. Highlight the url in the snapshot's browser tab (it should look like this: https://w.trhou.se/ducj79b1i0 ).

  6. Create your forum post and paste the snapshot's url into the post. Other Treehouse users will be able to open the snapshot, then 'fork' a new copy to check out.

Keep in mind that you can only ever have five snapshots, but you can delete them by hovering over the snapshot located below the "Take Snapshot" button in the popout and click the trash bin icon.

Good luck!

Thank you so much, Daniel!!!! I really appreciate your help! Sorry for the hard to read code!

Julie Myers
Julie Myers
7,627 Points
// Here is your coding:
var person = prompt('Please, oh please! Type your name!'); 
var room = prompt("Okay now type a place."); 
var weapon = prompt("Alright, now type a weapon."); 
var story = "I believe that the killer was " + person; 
story += ", in the " room; 
story += ", with the" + weapon "."; 
document.write(story);

/*
You just have a couple of syntax errors. I'll show you the lines of coding
that have the errors and I'm sure you will see them:
*/
story += ", in the " room; 
story += ", with the" + weapon ".";