invoke.js revision 266bfbd67fc220029bdadabd3c49e733f9f39360
/**
* Collection utilities beyond what is provided in the YUI core
* @module collection
* @submodule array-invoke
*/
/**
* Adds the <code>Y.Array.invoke( items, methodName )</code> utility method.
* @class YUI~array~invoke
*/
/**
* <p>Execute a named method on an array of objects. Items in the list that do
* not have a so named function will be skipped.</p>
*
* <p>The return values from each call are stored in an array and returned.</p>
*
* @method invoke
* @static
* @param items { Array } Array of objects supporting the named method
* @param name { String } the name of the method to execute on each item
* @param args* { mixed } Any number of additional args are passed as
* parameters to the execution of the named method.
* @return { Array } All return values, indexed according to item index.
*/
Y.Array.invoke = function ( items, name ) {
var args = Y.Array( arguments, 2, true ),
isFunction = Y.Lang.isFunction,
ret = [];
Y.Array.each( Y.Array( items ), function ( item, i ) {
if ( isFunction( item[ name ] ) ) {
ret[i] = item[ name ].apply( item, args );
}
});
return ret;
};