AlgoAnimator: Interactive Data Structures

isLoggedIn = true

"Welcome!"

"Log in"

if (isLoggedIn) {
    console.log("Welcome!");
} else {
    console.log("Log in");
}

If / Else

The most basic way to make decisions. If a condition is true, do this. If not (else), do that.

For more than two choices, use 'else if'. Code checks each condition in order until one is true.

When you have many possible values for a single variable, a 'switch' is cleaner than many 'else if' blocks.

A shortcut for simple if/else. 'condition ? true : false'. Great for assigning values based on a condition.

You can now write code that thinks and chooses paths.
Ready to learn about repeating actions with Loops?