Hi,
I've recently started using prototype.js, but I've been doing "AJAX"
for long time now.
I've inspected the prototype.js code, and I think I've got an
interesting addition to the Object.extend.
I might have reinvent the wheel here, so if it's nothing new please
give me some pointers as to how to accomplish the same with the native
prototype.js code.
Basically, I was looking for a way to call the original function of an
extended object. Here is my modification:
// a new version of extend
Object.extend2 = function(destination, source) {
for (var property in source) {
if(destination[property]) {
if(!destination['__super']) {
destination['__super'] = {};
}
destination['__super'][property] = destination[property];
}
destination[property] = source[property];
}
return destination;
}
// code to be executed to see the behavior.
var a = Class.create();
a.prototype = {
initialize: function(name,link) {
this.elements = new Object();
},
test: function() {
alert('hello');
}
}
var b = Class.create();
b.prototype = Object.extend2(new a(), {
initialize: function() {
},
test: function() {
this.__super.test();
alert('hello2');
}
}
)
var B = new b();
B.test();
// END
after executing this code, you should first see the "hello" alert, and
then "hello2".
I think this is an interesting addition, since I find myself often in
need to be able to access methods of the original object, without
having to copy/paste it's behavior to the new one.
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