Question

i have a question regarding defining objects in modules.

lets say i have a module:

/*---obj----*/
function A (param){
this.parm=param;
function func(){
//do somthing
 }
}
exports.func=func;

/*---file.js----*/
obj=require('obj');

function fileFunc(A){
A.func();//with out this line it works fine
A.param=2;
 }
}

for some reason it does not recognize the function in the object A. it recognizes the object A and its different vars, but when it comes to executing the function it gives the msg:
TypeError: Object # has no method ‘func’

i tried also to export the function in A by:
exports.A.func=A.func

or
exports.func=func
neither works..

does someone have a clue?

thanx
matti

Answer 1

The function you defined inside of A is local only to that function. What you want is

function A(param) {
  this.param = param;
}

A.func = function() {
  // do something
};

But if you are treating A as a constructor then you’ll want to put that function in A’s prototype

A.prototype.func = function() {
  // do something
};