Variables

Names for values

A variable is a name that points to a value. You create one with const or let.

const city = 'Lisbon';
let temperature = 18;
console.log(city);
console.log(temperature);

Use const for a value that will not change. Use let for a value that will change. If you try to change a const, JavaScript stops with an error.

let score = 10;
score = 12; // allowed: score was made with let

Template strings

A template string uses backticks instead of quotation marks. It lets you put a value inside the text with ${ }.

const name = 'Sam';
console.log(`Hello, ${name}!`);

The backtick key is usually at the top left of the keyboard, below the Esc key.

Your turn

Follow the three tasks. Each task is checked on its own.