Help with 3/9


#1

I keep getting the error message "Oops, try again. Did you set var computerChoice = Math.random() ? The capital 'M' in 'Math' is important!"

Can someone please help point me in the right direction. Thanks!

var userChoice = prompt("Do you choose rock, paper or scissors?");
var computerChoice = Math.random();
if (computerChoice < 0.34) {
computerChoice = "rock";
} else if(computerChoice <= 0.67) {
computerChoice = "paper";
} else {
computerChoice = "scissors";
}

var compare = function(choice1, choice2) {
if(choice1 === choice2) {
return "The result is a tie!";
}
if(choice1 === "rock") {
if(choice2 === "scissors") {
return "rock wins";
} else {
return "paper wins";
}
}
if(choice1 === "paper") {
if(choice2 === "rock") {
return "paper wins";
} else {
if(choice2 === "scissors") {
return "scissors wins";
}
}
if(choice1 === "scissors") {
if(choice2 === "rock") {
return "rock wins";
} else {
if(choice2 === "paper") {
return "scissors wins";
}
}
}
}
};
console.log("User Choice: " + userChoice);
console.log("Computer Choice: " + computerChoice);
compare(userChoice, computerChoice);


#2

@designmaster75974,
I would make one change

 console.log(compare(userChoice, computerChoice));

and then try a Reset

++++ reset of session *****************
under certain circumstances you can shoot your Browser in an
inconsistent state.

Therefor it is of an advantage to know that you have 2 reset facilities:

One is the use of the F5-key which does a refresh Browser

and

Two, select&copy your code
Then use the Reset Code button of the course-window,
then paste your code back in.

Addendum
General Notes:
Always refresh the browser after making corrections:
CTRL f5 ( if on Windows or Linux)
CMD r ( if on a MAC).
CTRL 0 to reset browser zoom


#3

I made the change as recommended but still got the same error after refreshing the page and browser. I am still getting the same error message.

var userChoice = prompt("Do you choose rock, paper or scissors?");
var computerChoice = Math.random();
if (computerChoice < 0.34) {
computerChoice = "rock";
} else if(computerChoice <= 0.67) {
computerChoice = "paper";
} else {
computerChoice = "scissors";
}

var compare = function(choice1, choice2) {
if(choice1 === choice2) {
return "The result is a tie!";
}
if(choice1 === "rock") {
if(choice2 === "scissors") {
return "rock wins";
} else {
return "paper wins";
}
}
if(choice1 === "paper") {
if(choice2 === "rock") {
return "paper wins";
} else {
if(choice2 === "scissors") {
return "scissors wins";
}
}
if(choice1 === "scissors") {
if(choice2 === "rock") {
return "rock wins";
} else {
if(choice2 === "paper") {
return "scissors wins";
}
}
}
}
};
console.log("User Choice: " + userChoice);
console.log("Computer Choice: " + computerChoice);
console.log(compare(userChoice, computerChoice));


#4

@designmaster75974,

In your compare function
you will have to use an IF ELSE-IF ELSE-IF ELSE-IF statement structure....

Please read
http://www.codecademy.com/forum_questions/559dcb4be39efe550f00006b
and concentrate on:

  • the creation of the compare function
  • the truth-table
  • the build of the IF ELSE-IF statement structure as part of the compare FUNCTION-BODY
  • the execution of the compare function (keeping in mind that the return statement is used )

#5

I have used an IF ELSE-IF ELSE-IF ELSE-IF statement structure, however the error message is tied to the Math.random function. The message is:

Oops, try again. Did you set var computerChoice = Math.random() ? The capital 'M' in 'Math' is important!