Confused about this javascript pattern

javascript

Solution

this pattern is an "Immediately Invoked Function Expresssion". in short, it's just a function that is executed immediately. the `this` on the end is a parameter to be sent to the inner function that will be accessed as `exports`

(function(exports){

    //that was "this" outside, is now "exports" in here

}(this));

in your example, we can assume that whatever `this` was, it's some object that has been added a `Move` method to it.

some also call this pattern the "Module Pattern" in a sense that it creates a "contained environment" so that the stuff inside it is not visible to the due to a new function scope. in other words, whatever is inside sees the outside, but the outside can only see what the inside lets it see

Problem

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