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Microsoft® JScript® Function Object |
Language Reference Version 2 |
Creates a new function.
function functionname( [argname1 [, ... argnameN]] )
{
body
}
var functionname = new Function( [argname1, [... argnameN,]] body );The Function object syntax has these parts:
Part Description functionname The name of the newly created function argname1...argnameN An optional list of arguments that the function accepts. body A string that contains the block of JavaScript 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 JavaScript converts into a Function object when necessary. JavaScript 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:
Example 1
function add(x, y) { return(x + y); }Example 2
In either case, you call the function with a line of code similar to the following:var add = new Function("x", "y", "return(x+y)");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.
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