second argument as function or object in javascript and append to the empty object

Question

I have created a function to us for namespace but how to extend its functionality

code:

MY.property = function (str, obj, prevent) {

    var ns = obj || MY,
            k = str.split(".");
    while (k.length > 1) {
        if (!prevent && typeof ns[k[0]] === "undefined") {
            ns[k[0]] = {};
        }
        if (ns[k[0]]) {
            ns = ns[k.shift()];
        } else {
            return;
        }
    }
    return [ns, [k[0]]];
};


MY.namespace = function (str) {
    var ns = this.property(str),
    k = str.split(".");
    if (k[0] === "MY") {
        k.shift();
    }
    if (ns && ns[0][ns[1]]) {
        return;
    } else {
        ns[0][ns[1]] = {};
    }
    return true;
};

This only works for MY.namespace("test") , var My.test = function(){}; but how can I extend it like this MY.namespace("test", function(){ }); and MY.namespace("test", {});

Thanks for any help or advice.

Joe · Accepted Answer · 2011-08-09 17:39:35Z

1

example

The special operator typeof should be enough to accomplish this:

My.namespace = function (str, obj) {

     if (obj) {
          this[str] = obj;
     }
     ....

My.namespace('test', function () {console.log('here');});
My.test()

EDIT: An updated example: http://jsfiddle.net/qk6Kj/1/

edited Aug 9, 2011 at 17:39

answered Aug 9, 2011 at 1:34

Joe

82.9k18 gold badges130 silver badges147 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

jfriend00 Over a year ago

Why the first obj in if (obj || typeof obj === "function")? Won't if (obj) do the same? Or, should this be just if (typeof obj === "function") to ensure that obj is a function?

Joe Over a year ago

@jfriend, you are right. I combined an if else statement without really thinking it through.

paul Over a year ago

@joey instead of passing a another argument if I can use typeof argument[1] === "Object" || typeof argument[1] === "function since I want to pass second argument as object or function

paul Over a year ago

@joey this will fail when u r passing a immediate function like MY.namespace("immediate", (function(){...}());

Collectives™ on Stack Overflow

second argument as function or object in javascript and append to the empty object

1 Answer 1

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related