IT:AD:JScript:Concepts:Closures

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## Example ##

function Book(title) {
  var title_;

  this.getTitle = function() {
    return title_;
  };

  this.setTitle = function(title) {
    title_ = title;
  };

  // should use the setter in case it does something else than just assign
  this.setTitle(title);
}

var book = Book("War and Peace");

Compared to the prototype way:

function Book(title) {
  this.title = title;
}

Book.prototype.getTitle = function () {
  return this.title;
};

var myBook = new Book('War and Peace');

## Reference ##

• http://www.codeproject.com/Articles/18826/Closures-in-JavaScript