JavaScript: Enum in JavaScript

Example 1:

var Days = {"sunday" : 0, "monday" : 1, "tuesday" : 3, "wednesday" : 4, "thursday" : 5, "friday" : 6, "saturday" : 7};

document.write(Days.friday);

Example 2:

function Enum() {}
Enum.ColorType = {red:0, blue:1, green:2}
document.write(Enum.ColorType.blue);

Example 3:

var enumObj = new Object();
enumObj.fontSize = {small:10, medium:12, large:14}
document.write(enumObj.fontSize.small);

Thanks,

InfoSource: http://programming.top54u.com/post/Creating-Javascript-Enum-values.aspx