Description

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Beginner · 8 min

Names and values

Use const for a fixed binding and let for a value that changes.

Name a value

const declares a variable that cannot be reassigned. The equals sign assigns the value. An unquoted variable name refers to its stored value.

const city = "Ankara";
console.log(city);

Output

Ankara

Change a value

Use let when you need to assign a new value later. Declare the variable once, then use its name to update it.

let tickets = 2;
tickets = 3;
console.log(tickets);

Output

3

Put it into practice

  1. Predict the output of each example before running it.
  2. Complete the coding task, then try the practice questions.

Try it yourself

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Store a city

Declare city with const, assign the string "Ankara", and display city.

Practice