JavaScript return

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Examples

Return the value of PI:

function myFunction() {
return Math.PI;
}

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Return "Hello John":

document.getElementById("demo").innerHTML = myFunction("John");

function myFunction(name) {
return "Hello " + name;
}

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More examples below.

Definition and Usage

The return statement stops the execution of a function and returns a value.

Read our JavaScript Tutorial to learn all you need to know about functions. Start with the introduction chapter about JavaScript Functions and JavaScript Scope. For more detailed information, see our Function Section on Function Definitions, Parameters, Invocation and Closures.

Syntax

return value;

Parameters

Parameter	Description
value	Optional. The value to be returned. If omitted, it returns `undefined`

More Examples

Calculate the product of two numbers and return the result:

// Call a function and save the return value in x:
var x = myFunction(4, 3);

function myFunction(a, b) {
// Return the product of a and b
return a * b;
}

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JavaScript Tutorial: JavaScript Functions

JavaScript Tutorial: JavaScript Scope

JavaScript Tutorial: JavaScript Function Definitions

JavaScript Tutorial: JavaScript Function Parameters

JavaScript Tutorial: JavaScript Function Invocation

JavaScript Tutorial: JavaScript Function Closures

JavaScript Reference: JavaScript function Statement