I want to create a javascript class/object that allow me to have various method:

Model class

• Model.all() » static method
• Model.find() » static method
• Model delete() » instance method
• Model save() » instance method
• Model.create() » static that returns a new Model instance

For static method I can define them using:

Model.staticMethod(){ method }

while for instance method is better to use:

function Model(){
    this.instanceMethod = function(){}    
}

and then create a new instance

or using prototype?

var m = function Model(){

}

m.prototype.method() = function(){

}

Now let's say that I want to create a new class based on Model, how to inherit not only its prototypes but also its static methods?