return statementS2C Home « Statements « return
Value returned from a function.
Description
Specifies an expression to be returned from a function.
If no return expression is declared the function will return undefined.
Syntax
| Signature | Description |
|---|---|
return [expression]; | Specifies an expression to be returned from a function. |
Parameters
| Parameter | Description |
|---|---|
expression | An optional expression to be returned from the function. |
Examples
The code below gives an example of using the return statement.
*/
/ Create a function statement that takes an argument and
/ returns the square of the argument.
/*
function squareNumber(a) {
return a * a;
}
alert(squareNumber(9));
alert(squareNumber(13));
Related Tutorials
JavaScript Intermediate Tutorials - Lesson 8 - Functions
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