Javascript self executing function “is not a function”

Question

I have:

var Init = (function() {
   my js goes here
})();

And my js executes correctly when the page is loaded. I also have:

Answer 1

In order for Init to execute as a function, your code within the self-executing function must return a function, and the only reason to do this is if you need to construct a specific function dynamically dependent upon some data states:

var Init = (function() {

    // some code

    return function () {
        // some dynamic code dependent upon your previous code
    };

}());