Searching for appropriate answer proved difficult because of the existence of many other problems related to my keywords, so I&#39;ll ask this here.

As we know, functions in javascript are objects and they have their own properties and methods (more properly, function istances, inherited from Function.prototype).

I was considering adding custom properties for one function (method), let&#39;s skip the &quot;why?&quot; part and go straight to the code:

    var something = {
        myMethod: function () {
            if (something.myMethod.someProperty === undefined) {
                something.myMethod.someProperty = &quot;test&quot;;
            }
            console.log(something.myMethod);
        }
    }

When inspected with Firebug&#39;s DOM explorer, the property is defined as expected. However, as I don&#39;t consider myself a javascript expert, I have the following questions:

 1. Can this method be considered &quot;proper&quot; and standards compliant? It works in Firefox but there are many things working as expected in web browsers and aren&#39;t by any means standards.
 2. Is this kind of altering objects by adding new properties to them a good practice?


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Adding custom properties to a function