"this" in JavaScript

"this" in JavaScript = a referral to the parent object

TEST IT:
http://www.w3schools.com/js/tryit.asp?filename=tryjs_create_object2
adding & removing "this" was the easiest way for me to understand

EXAMPLE:

function OpenStudioModel(buildingData, runmanager) {

  this.model = new openstudio.model.Model();

  this.runManager = runmanager;

};

"this" is a replacement of OpenStudioModel function
"this" is the current instance of OpenStudioModel
"this" is adding functionality to OpenStudioModel function
"this" is short hand for OpenStudioModel.model & OpenStudioModel.runManager

REFERENCES

http://www.sitepoint.com/what-is-this-in-javascript/

http://mahesha999.blogspot.in/2013/07/javascript-essential-parts-this-keyword.html

CodeSchool Definition of "this":  this keyword will automatically refer to the new instance of the class that is being made