Is it possible to modify a function itself when its property function is called?

Question

Basically I want to do this:

someFunction() // do something

someFunction.somePropertyFunction()

someFunction()  // Now someFunction is modified; it should now          


        

Answer 1

Not sure if this helps, but I would implement described problem in following way:

// defined by somebody else - unknown to developer
var someFunction = function() {
    alert("this is initial behavior");
}

someFunction(); // returns "this is initial behavior"

// defines parent object on which someFunction() is called
var parentObject = this; // returns window object (as called direclty in the
// browser)

// if you are calling someFunction from some object (object.someFunction())
// it would be:
// var parentObject = object;

// augumentThis definition
someFunction.augumentThis = function() {
    var newFunction = function() {
        alert("this is changed behavior");
    };
    parentObject.someFunction.somePropertyFunction = function() {
        parentObject.someFunction = newFunction;
        parentObject.someFunction();
    };
};

someFunction.augumentThis();            // change function behavior
someFunction();                         // "this is initial behavior"
someFunction.somePropertyFunction();    // "this is changed behavior"
someFunction();                         // "this is changed behavior"