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JavaScript JavaScript Basics (Retired) Making Decisions with Conditional Statements Improving the Random Number Guessing Game

Posted by Hanna Reed
Hanna Reed
3,849 Points

Improving the Random Number Guessing Game

I cannot figure this out, it will not run the program. No prompts are popping up and nothing else will happen either. 

var correctGuess = false;
var randomNumber = Math.floor(Math.random() * 6 ) + 1;
var guess = prompt('I am thinking of a number between 1 and 6. What is it?');
if (parseInt(guess) === randomNumber) {
  correctGuess = true; 
} else if ( parseInt(guess) < randomNumber ) {
    var guessMore = prompt('Try again. The number I am thinking of is more than ' + guess);
  if (parseInt(guessMore) === randomNumber) {
      correctGuess = true;
  }
} else if ( parseInt(guess) > randomNumber ) {
    var guessLess = prompt('Try again. The number I am thinking of is less than ' + guess');
  if (parseInt(guessLess) === randomNumber) {
      correctGuess = true;
  }
}
if ( correctGuess ) {
    document.write('<p>You guessed the number!</p>');
} else {
    document.write('<p>Sorry. The number was ' + randomNumber + '.</p>');
}

Moderator edited: Corrected the markdown so the code would render properly. Blank lines missing between the backticks. -JN

I also can't figure out how to format the code when posting through a question.

Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

Use the instructions for code formatting in the Markdown Cheatsheet pop-up below the "Add an Answer" area. :arrow_heading_down:
Or watch this video on code formatting.

Jennifer Nordell
seal-mask
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

You almost had the markdown spot on! I added "js" to the end of your top set of backticks and a blank line afterwards. Then I added a blank line between your code and the bottom set of backticks. If you click on the question and choose edit, you can see exactly what I did :sparkles:

1 Answer

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! Quite simply, you have a runaway single quotation mark which is causing an error and it can no longer interpret the script. Here's the offending line:

var guessLess = prompt('Try again. The number I am thinking of is less than ' + guess');

It should look like this:

var guessLess = prompt('Try again. The number I am thinking of is less than ' + guess);

//Note the removal of the last single quotation after guess

When I delete that single quotation, your code runs like a charm! :sparkles:

Hanna Reed
Hanna Reed
3,849 Points

thanks lol, hard to find such a small problem!

Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

That syntax coloring can be helpful in such cases!