Class objects with constructor and multi-inheritance support. This implementation is not bound to any library (i.e. works with or without Prototype / JQuery) and should work with any browser.
Class JS was written by Matthias Ladkau.
Based on: Simple JavaScript Inheritance by John Resig http://ejohn.org/blog/simple-javascript-inheritance/
Class JS is released under the MIT license.
Classes are created with the create method for example:
CA = Class.create({
attr : 123,
init : function (arg) {
this.attr = arg;
}
});Classes can have attributes and a constructor method called init. Classes are instantiated like this:
a = new CA("test");Given arguments are passed to the constructor method init. Classes can be organized in an inheritence structure. A subclass of CA would be declared like this:
CB = CA.create({
...
});Functions can be overwritten in subclasses and the overwritten function can be called with "this._super(...)". For example:
CB = CA.create({
init : function (arg) {
this._super(arg);
}
});It is possible to inherit from multiple classes. However one class must be choosen to be the primary class. The instanceof operator works only with primary superclasses. An example of multi inheritence would be:
CC = CA.create(CX, {
init : function (arg) {
this._super(arg);
}
});In this example the class CC would inherit all functions from CX and CA. A call to this._super would first go to CX and to CA if the function is not defined in CX. Objects instantiated from class CC are instanceof CA but not CX.