// an example Object
var myObject = {
  a: 1,
  B: 3,
  test: 2
};

myObject.a // getting the value of "a" key with DOT NOTATION
myObject["a"] // getting the value of "a" key with BRACKET NOTATION

myObject.test // getting the value of "test" key with DOT NOTATION
myObject["test"] // getting the value of "test" key with BRACKET NOTATION