Purpose of returning an anonymous function?

What is the purpose of using the return leading the function? Does it matter as long as you are returning within the function?
return (function() { 
  "use strict";
  var u12Value ;
  try {
    if(!!document.cookie && document.cookie.indexOf("CUSTOMER")!==-1) {
      u12Value = 1;
  } 
    else
    {
       u12Value = 0;
    }
  }catch(e) {}
	return u12Value;
})();

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894359Asked:
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Duy PhamFreelance IT ConsultantCommented:
It's just an inline function declared right when returning value. As long as that return statement is inside a function, it should be just fine.
0
894359Author Commented:
Hi Duy,
So the return is not necessary then?
0
Duy PhamFreelance IT ConsultantCommented:
The return is necessary & mandatory here because it is the main action of above statement, in which you are trying to return a value that is the result of an inline function.

Without the return, it makes no sense with the inline function.

What I meant in previous post is the return is fine when it's in another function like below:
function anotherFunction() {
    .....
    return (function() { 
        "use strict";
        var u12Value ;
        try {
            if(!!document.cookie && document.cookie.indexOf("CUSTOMER")!==-1) {
                u12Value = 1;
            } 
            else
            {
                u12Value = 0;
            }
        }catch(e) {}
	return u12Value;
    })();
}

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and that is equal to:
function valuedFunction() { 
   "use strict";
   var u12Value ;
   try {
      if(!!document.cookie && document.cookie.indexOf("CUSTOMER")!==-1) {
          u12Value = 1;
      } 
      else
      {
          u12Value = 0;
      }
   }catch(e) {}
   return u12Value;
}

function anotherFunction() {
    ....
    return valuedFunction();
}

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0

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