yui-object.js revision 7d700ee4bd2827aa47bc00976ab658ed6c97e569
/*
* YUI object utilities
* @module yui
* @submodule object
*/
/**
* Adds the following Object utilities to the YUI instance
* @class YUI~object
*/
/**
* Y.Object(o) returns a new object based upon the supplied object.
* @TODO Use native Object.create() when available
* @method Object
* @static
* @param o the supplier object
* @return {object} the new object
*/
Y.Object = function(o) {
var F = function() {};
F.prototype = o;
return new F();
};
var O = Y.Object, L = Y.Lang;
/**
* Determines whether or not the property was added
* to the object instance. Returns false if the property is not present
* in the object, or was inherited from the prototype.
*
* @deprecated Safari 1.x support has been removed, so this is simply a
* wrapper for the native implementation. Use the native implementation
* directly instead.
*
* @TODO Remove in B1
*
* @method Object.owns
* @static
* @param o {any} The object being testing
* @param p {string} the property to look for
* @return {boolean} true if the object has the property on the instance
*/
O.owns = function(o, p) {
Y.message('Object.owns is deprecated, use the native method');
return (o && o.hasOwnProperty) ? o.hasOwnProperty(p) : false;
};
/**
* Returns an array containing the object's keys
* @TODO use native Object.keys() if available
* @method Object.keys
* @static
* @param o an object
* @return {string[]} the keys
*/
O.keys = function(o) {
var a=[], i;
for (i in o) {
if (o.hasOwnProperty(i)) {
a.push(i);
}
}
return a;
};
/**
* Executes a function on each item. The function
* receives the value, the key, and the object
* as paramters (in that order).
* @method Object.each
* @static
* @param o the object to iterate
* @param f {function} the function to execute
* @param c the execution context
* @param proto {boolean} include proto
* @return {YUI} the YUI instance
*/
var s = c || Y;
for (var i in o) {
if (proto || o.hasOwnProperty(i)) {
f.call(s, o[i], i, o);
}
}
return Y;
};
}, "@VERSION@");