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JavaScript Operators

JavaScript: function Operator

Description

The function operator defines a function inside an expression.

Version

Implemented in JavaScript 1.5

Syntax

var1 = function( parameter1, parameter2,......parametern)
{
statement(s)
}

Parameters

parameters: A list of arguments to the function.

statement(s): JavaScript statements.

Example:

The following web document demonstrates the use of function operator. It sets x to a function that returns the square of two numbers.

HTML Code

<!doctype html>
<head>
<meta charset="utf-8"> <title>JavaScript function operator example.</title> ;meta name="description" content="This document contains an example of JavaScript function operator "/> </head>
<script src="javascript-function-operator-example1.js"></script>
</body>
</html>

JS Code


var a = 12;
var b = 14;
var x = function(a,b)
{
return a*a+2*a*b+b*b;
};
console.log("The square of "+a+ " and "+b +" is " +x(a,b));

View the example in the browser

Practice the example online

See the Pen function-1 by w3resource (@w3resource) on CodePen.


See also

Conditional Operator
comma
delete
in
instanceof
new
this
typeof
void



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