同时分配和执行Javascript功能

Question

Is there a more elegant way of writing something like this, where myFunction is asigned to the function func but func is also executed during the assignment?

var myFunction = (function(){
  var func = function(){
    console.log('hello world');
  };

  func();
  return func;
})();

...

myFunction();

Answer 1

var myFunction = (function func(){
  console.log('hello world');

  return func;
})();

You can name your anonymous function. This name will only be accessible inside of the function itself, though.

Answer 2

Your core statement is this

var <name> = (<functionExpression>)();

I don't see how this could be more elegant.

Answer 3

Assignments expressions return the assigned value, but you have to declare the variable separately so you still have to repeat the identifier:

var outer;
(outer = function() {
    var inner;
    return (inner = function() {
        print('hello world');
    })(), inner;
})();

outer();

That said if I saw this code from a coworker I'd whap him with a rolled up newspaper.