Function Object (JScript 5.6)


function functionName([argname1 [, ...[, argnameN]]]) { ┬á┬á┬á┬á┬á┬ábody }


functionName = new Function( [argname1, [... argnameN,]] body );

functionName: Required. The name of the newly created function

argname1...argnameN: Optional. A list of arguments the function accepts.

body: Optional. A string that contains the block of JScript code to be executed when the function is called.

The function is a basic data type in JScript. Syntax 1 creates a function value that JScript converts into a Function object when necessary. JScript converts Function objects created by Syntax 2 into function values at the time the function is called.

Syntax 1 is the standard way to create new functions in JScript. Syntax 2 is an alternative form used to create function objects explicitly.

For example, to create a function that adds the two arguments passed to it, you can do it in either of two ways:

┬á	Copy Code
function add(x, y) { return(x + y); //Perform addition and return results. }

┬á	Copy Code
var add = new Function("x", "y", "return(x+y)");

In either case, you call the function with a line of code similar to the following:

┬á	Copy Code
add(2, 3);

Note
When calling a function, ensure that you always include the parentheses and any required arguments. Calling a function without parentheses causes the text of the function to be returned instead of the results of the function.

apply Method | call Method | toString Method | valueOf Method

Version 2

Reference

function Statement (JScript 5.6)
new Operator (JScript 5.6)
var Statement (JScript 5.6)

Arguments

Remarks

Example 1

Example 2

Properties

Methods

Requirements

See Also

Reference