Question

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Location of parenthesis for auto-executing anonymous JavaScript functions?
Is there a difference between (function() {…}()); and (function() {…})();?
Two ways of immediate call to anonymous function (function(d){ }() ); and (function(x){ } )();

Is there a difference between the given 2 ways of declaring and calling an anonymous function?

Option 1:

(function(){
    console.log('Declare and call anonymous function');
})();

Option 2:

(function(){
    console.log('Declare and call anonymous function');
}()); 

Both the functions are invoked once it is evaluated.But I couldn’t understand the difference.

Answer 1

No, there’s no difference: the two options are syntactically different but semantically equivalent. Consider a named function:

(foo())

vs.

(foo)()

and perhaps it’s clearer how they’re the same thing.