Like all JS variables, both the object name and property name are case sensitive. You can define a property by assigning it a value.
var myCar = new Object();
myCar.make = 'Ford';
myCar.model = 'Mustang';
myCar.year = 1969;
var myCar = {
make: 'Ford',
model: 'Mustang',
year: 1969
};