Variables with let

Learn how to store and update values using variables — the building blocks of every program.

Step 1 of 5

A labeled box that holds a value

Programs need to remember things. A game needs to track your score. A shopping site needs to remember what's in your cart. A chat app stores the message you're typing. In JavaScript, you store values using variables.

A variable has two parts: a name (the label) and a value (what's inside). You create one with the `let` keyword, give it a name, use `=` to assign a value, and end the line with a semicolon. The name can be almost anything you choose — but it should describe what's stored inside, so your code is easy to read.

Think of it this way: Imagine a row of labeled boxes on a shelf. Each box has a name tag and holds one thing inside. A box labeled 'age' might hold the number 25. A box labeled 'name' might hold the text 'Alice'. You can look inside any box by reading its label, and you can swap out what's inside whenever you need to.

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let

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CONSOLE

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