Obj.dot.function

JavaScript
1

Back in the days of Danny Goodman, the object this referred to the object that sent the message to a function, e.g.,

aSender.aFunction();

aFunction() {

   theSender = this;

}

Now, with the concept of “binding”, one must (??) use:

aFunction.call(aSender);

for theSender = this to work inside aFunction.

I think (??) I understand binding … what I don’t understand is why the older concept of a “message” being sent to an “object” doesn’t seem to work anymore?

2

I’m not so sure about the this keyword anymore. It’s much easier to just pass the needed information to as a function argument instead.

3

Paul

You’re right … but I am just trying to learn.

4

About sending a message to an object, would that be something like this?

var obj = {
    doSomething: function (msg) {
        // do something with msg
    }
};
var message = "Message information";

obj.doSomething(message);
5

I am thinking:

aMsg.aFunction();

aFunction() {

   theMsg = this;

}
6

At the moment, I am returning to your original idea to just use:

function f(msg)

A bunch more understandable, rather than using:

f.call(msg)

1 Like
7

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