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JavaScript JavaScript Loops, Arrays and Objects Tracking Data Using Objects The Build an Object Challenge, Part 2 Solution

Qasim Hafeez
Qasim Hafeez
12,731 Points
Posted by Qasim Hafeez
Qasim Hafeez
12,731 Points

Declaring message inside for loop

Why can't the message variable be declared inside the for loop? That's how I tried doing it before watching the solution and it didn't work. It would only print out the last object. Can anyone explain why?

1 Answer

Kaitlyn Brown
Kaitlyn Brown
1,072 Points
Kaitlyn Brown
Kaitlyn Brown
1,072 Points

I can't see your code since I'm viewing your question through the Community tab instead of on the specific video, but it looks like what you're experiencing is confusion with your variable's scope. When you initialize a variable inside a conditional statement or loop, the variable's scope is limited to that statement. In short, it does not exist outside your loop. However, if you declare the variable outside your loop, it will exist inside the loop. Think of it this way: variables can travel inward, but they cannot travel outward.