JavaScript API Reference for Oracle ADF Faces

org.ecmascript.object
Class Function

org.ecmascript.object.Object
   |
   +--org.ecmascript.object.Function

public class Function
extends Object

caller

public Function caller

The Function object being executed when this Function was executed or undefined if the function is a top-level Function.

See also:

Arguments.caller

length

public Number length

The expected number of arguments (not the actual number of arguments).

See also:

Arguments.length

Function

public Function(String... argumentNames,
                String functionBody)

The native browser JavaScript object used to define code that can be called on demand rather than executing immediately.
Instead of defining a function using the constructor, it is recommended that you use one of the following mechanisms for optimal performance:

• function functionName(functionArgumentName1, functionArgumentName2)
{
  // function body
}
• var functionName = function(functionArgumentName1, functionArgumentName2)
{
  // function body
};

And then you can invoke the function by calling functionName(foo, bar);

Note that this object is implemented and supported by the web browser and results of its use may vary.

Parameters:

argumentNames	-	zero or more argument names for the function
functionBody	-	the body of the function

apply

public Object apply(Object callingObject,
                    Array argumentArray)

Allows you to apply a method of another object in the context of a different object (the calling object); useful for implementing inheritance. This is similar to call(), except for the type of arguments that is supports. You can use an arguments array instead of a named set of parameters which allows you to share all of the unspecified arguments of the called object without knowing what they are.

Parameters:

callingObject	-	the parameter for the calling object (e.g. this)
argumentArray	-	an argument array for the object (e.g. arguments)

Return:

Object - the result of the method application

See also:

call(Object, Object...)

call

public Object call(Object callingObject,
                   Object... arguments)

Allows you to apply a method of another object in the context of a different object (the calling object); useful for implementing inheritance. This is similar to apply(), except for the type of arguments that is supports. You must specify each argument individually when using call().

Parameters:

callingObject	-	the parameter for the calling object (e.g. this)
arguments	-	each argument for the object (e.g. each item in the arguments array)

Return:

Object - the result of the method call

See also:

apply(Object, Array)

toSource

public String toSource()

Generates a String representation of the function's source code.

Return:

String - a String representation of the function's source code; a generic placeholder of "[native code]" may exist in this code for source code that is not available

toString

public String toString()

Generates a String representation of the function's source code.

Return:

String - a String representation of the function's source code; a generic placeholder of "[native code]" may exist in this code for source code that is not available