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JavaScript JavaScript Basics (Retired) Making Decisions with Conditional Statements Boolean Values

Elena Paraschiv
Elena Paraschiv
9,938 Points
Posted by Elena Paraschiv
Elena Paraschiv
9,938 Points

Can we add just one If statement instead?

Is it the same if we write like this :

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;
    document.write ("You got it!")
} 

else {
    document.write('<p>Sorry. The number was ' + randomNumber + '.</p>');
}

instead of :

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;

} 

if (correctGuess= true){
   document.write ("You got it");
}
else {
    document.write('<p>Sorry. The number was ' + randomNumber + '.</p>');
}

3 Answers

Perry Eising
Perry Eising
12,663 Points

No, it's not! If you look at this statement closely:

if (parseInt(guess) === randomNumber ) { correctGuess = true; document.write ("You got it!") }

it is not the same as 

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

because here:

if (correctGuess= true){ document.write ("You got it"); } else { document.write('Sorry. The number was ' + randomNumber + '.'); }

you are not comparing correctGuess to true, you are assigning it. Try changing it to correctGuess == true or even correctGuess === true instead.

[Mod Note - Changed from comment to answer so it can be voted on or marked as best.]

Elena Paraschiv
Elena Paraschiv
9,938 Points
Elena Paraschiv
Elena Paraschiv
9,938 Points

Got it . Thanks for the clarification Perry !

stevenstabile
stevenstabile
9,763 Points
stevenstabile
stevenstabile
9,763 Points

I don't understand this. If you do it like Elena, IF the users guess is the same as the randomNumber, you set correctGuess from false to true and tell the user they are correct. ELSE you leave the correctGuess as false and tell the user they were wrong. Why would you have to compare correctGuess to true when that's the purpose of the guess === randomNumber line? Am I missing something?