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

Naivedya Bansal
Naivedya Bansal
5,483 Points
Posted by Naivedya Bansal
Naivedya Bansal
5,483 Points

default value

What is the default value given to the guess variable while declaration?

2 Answers

Marcus Parsons
Marcus Parsons
15,719 Points
Marcus Parsons
Marcus Parsons
15,719 Points

Hey Naivedya Bansal,

The guess variable will be considered undefined by default because it has had no assignment done to it.

You can check that this is true by opening up either Firefox or Chrome's console (or doing a test js script) and typing out the following: 

var guess;
console.log(guess);
//if not using Chrome or Firefox:
//alert(guess);

I hope that helps, Naivedya!

John McCall
John McCall
2,630 Points
John McCall
John McCall
2,630 Points

By just creating a variable "var guess;" you aren't actually applying a value to the variable but just creating it so it can be called later on in the program.

"var guess = getRandomNumber(upper);" also worked, but is more typing!