Javascript Is it possible for one member of an object to access another member of this object without explicit reference to the object itself?

Question

For instance:

var myObj={ myValue="hola", asMember=function(){ alert( this.myValue ); } }; myObj.asMember(); // will work fine var asGlobal=myObj.asMember; // global alias for that member function asGlobal(); // won't work in javascript (will work in AS3, but i need js now) 

So the question is, can I rewrite asMember so that it can be called with a global alias and not mention myObj at all? He realized that if I define him:

 asMember=function(){ alert( myObj.myValue ); } 

it will work, but in my case, mentioning myObj unacceptable even inside the function itself (because myObj can be reassigned later, but asGlobal will not change and will continue to work)

Answer 1

To call your asGlobal , you will need to do:

 asGlobal.call(myObj); 

ECMAScript 5 introduces the bind() method to provide context for the function. This will allow you to do the following:

 var asGlobal = myObj.asMember.bind(myObj); asGlobal(); 

However, bind() is not yet supported in current browsers, as far as I know. In the meantime, you can check out Prototype bind , which is almost identical to ECMAScript 5.

Answer 2

 var asGlobal = function(){myObj.asMember();} 

If myObj changes to another object, the function will use the last value. If you do not want this, try:

 var asGlobal = function(o){return function(){o.asMember();}}(myObj); 

Answer 3

Gotcha! Closing works well

 function myObj(){ var myValue="hola"; return{ asMember:function(){ alert( myValue ); }, anotherMemer:function(){/* ... */} } }; var temp=myObj(); var asGlobal=temp.asMember; // global alias for that member function asGlobal();