jquery class inheritance

Question

var A=function(){
};

$.extend(A.prototype, {
    init:function(){
        alert(\'A init\');
    }
});
var B=function(){

};

$.extend(B.prototype,A.prototype,{
            


        

Answer 1

I use the same pattern and I like its conciseness.

About the lack of the "super" keyword, that's not really a problem. Thanks to Function.prototype.call() operator, you can call any function within the context of any object. So the sequence to call A.prototype.init() from B.prototype.init() is:

A.prototype.init.call(this, some parameters ...);

Also, don't forget that you may call A constructor from B constructor like this:

B = function(key, name) {
    A.call(this, key);
    this.name = name;
};

An experimented JS coder will know what happens.

So to conclude: not perfect but close enough.