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

Posted by Michael Kolibaba
Michael Kolibaba
915 Points

code looks correct but will not run

I have checked my code against the video and it looks to be correct, but the program won't fully run when I preview it. I see only "Random Number Guessing Game" and I am not prompted to enter my guess.

There must be an error in my code, but I have not been able to figure out. Is something missing or is the syntax incorrect?

Michael Kolibaba
Michael Kolibaba
915 Points

Here is my code:

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>'); }

1 Answer

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

Unformatted code is very hard to read! 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.

But I did manage to spot this in it:

if (parseInt(guessLess) === randomNumber   { correctGuess = true; }

Note that there is no closing parenthesis at the end of the conditional expression and before the code block.

Michael Kolibaba
Michael Kolibaba
915 Points

Hi Steven,

Thanks for the suggestions for submitting code, which I will follow in the future. Also, the problem you spotted must be the error, as the program is now running correctly.

Many thanks!