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JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops A Closer Look at Loop Conditions

Hubert Odias
Hubert Odias
1,898 Points

Hello i have a question on why he has var = randomNumber = getRandomNumber(upper) as a variable with a function.

Also i would like to know what the purpose of this variable is.

1 Answer

Steven Parker
Steven Parker
229,017 Points

Look again, there's only one "=" in that statement:

var randomNumber = getRandomNumber(upper);

This statement uses the "getRandomNumber" function to get a value to store into the new variable "randomNumber" that is created.

And the purpose of the variable is to store that random number so it can be compared to another one later to check for a match.

Hubert Odias
Hubert Odias
1,898 Points

So it’s storing the random number from the math.random expression to be compared with the correct number? couldnt we use a function expression with a variable consisting of the math.random syntax?

Steven Parker
Steven Parker
229,017 Points

You could, but it would be more verbose. And since the same thing will be done in more than one place in the program, creating a named function for it makes sense.