Class Function

Package:	Global
Class:	Function
Extends:	Object
Defined In:	Ext.js

These functions are available on every Function object (any JavaScript function).

Properties - Methods - Events

Public Properties

This class has no public properties.

Public Methods

Method		Defined By
	createCallback() : Function	Function
	Creates a callback that passes arguments[0], arguments[1], arguments[2], ... Call directly on any function. Example: ...	Function
	createDelegate( [`Object obj`], [`Array args`], [`Boolean/Number appendArgs`] ) : Function	Function
	Creates a delegate (callback) that sets the scope to obj. Call directly on any function. Example: this.myFunction.cre...	Function
	createInterceptor( `Function fcn`, [`Object scope`] ) : Function	Function
	Creates an interceptor function. The passed fcn is called before the original one. If it returns false, the original ...	Function
	createSequence( `Function fcn`, [`Object scope`] ) : Function	Function
	Create a combined function call sequence of the original function + the passed function. The resulting function retur...	Function
	defer( `Number millis`, [`Object obj`], [`Array args`], [`Boolean/Number appendArgs`] ) : Number	Function
	Calls this function after the number of millseconds specified.	Function

Public Events

This class has no public events.

Method Details

createCallback

public function createCallback()

Creates a callback that passes arguments[0], arguments[1], arguments[2], ... Call directly on any function. Example: myFunction.createCallback(myarg, myarg2) Will create a function that is bound to those 2 args.

Parameters:

None.

Returns:

Function
The new function

This method is defined by Function.

createDelegate

public function createDelegate( [Object obj], [Array args], [Boolean/Number appendArgs] )

Creates a delegate (callback) that sets the scope to obj. Call directly on any function. Example: this.myFunction.createDelegate(this) Will create a function that is automatically scoped to this.

Parameters:

obj : Object
(optional) The object for which the scope is set
args : Array
(optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller)
appendArgs : Boolean/Number
(optional) if True args are appended to call args instead of overriding, if a number the args are inserted at the specified position

Returns:

Function
The new function

This method is defined by Function.

createInterceptor

public function createInterceptor( Function fcn, [Object scope] )

Creates an interceptor function. The passed fcn is called before the original one. If it returns false, the original one is not called. The resulting function returns the results of the original function. The passed fcn is called with the parameters of the original function. @addon

Parameters:

fcn : Function
The function to call before the original
scope : Object
(optional) The scope of the passed fcn (Defaults to scope of original function or window)

Returns:

Function
The new function

This method is defined by Function.

createSequence

public function createSequence( Function fcn, [Object scope] )

Create a combined function call sequence of the original function + the passed function. The resulting function returns the results of the original function. The passed fcn is called with the parameters of the original function

Parameters:

fcn : Function
The function to sequence
scope : Object
(optional) The scope of the passed fcn (Defaults to scope of original function or window)

Returns:

Function
The new function

This method is defined by Function.

defer

public function defer( Number millis, [Object obj], [Array args], [Boolean/Number appendArgs] )

Calls this function after the number of millseconds specified.

Parameters:

millis : Number
The number of milliseconds for the setTimeout call (if 0 the function is executed immediately)
obj : Object
(optional) The object for which the scope is set
args : Array
(optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller)
appendArgs : Boolean/Number
(optional) if True args are appended to call args instead of overriding, if a number the args are inserted at the specified position

Returns:

Number
The timeout id that can be used with clearTimeout

This method is defined by Function.