JavaScript return Statement

The return statement in JavaScript is used inside a function to return a value to the place where the function was called. It also stops the function execution immediately.

Syntax

• expression is optional.
• If no value is specified, the function returns undefined by default.

Example 1: Returning a Value

Example 2: Early Exit from Function

Example 3: Returning Without a Value

Example 4: Returning an Object

Best Practices

• Always place the return value on the same line as the return keyword.

✅ Correct:

❌ Incorrect:

This will return undefined due to JavaScript's automatic semicolon insertion.

Key Takeaways

• return ends the function and optionally sends back a value.
• If omitted, undefined is returned.
• Use return to exit functions early based on conditions.
• Be cautious with newline placement after return.
• Functions can return any data type—numbers, strings, arrays, objects, and more.