How closure works guided by code.

jsbin.closure.js

console.clear();
console.log('init Test');
var globalVar = "global";

function myObject(value){
  var test="private"+value;
  
  this.testLog = function(){
    console.log(test + ":" + globalVar);
  };
  
  return this;
}

//When I use the new keyword, I made a new scope, 
var testObject = new myObject("initialized");

console.log('start Test');
testObject.testLog();