方法1: 直接var定義
var Days = {"sunday" : 0, "monday" : 1, "tuesday" : 3, "wednesday" : 4, "thursday" : 5, "friday" : 6, "saturday" : 7};
document.write(Days.friday);
方法2: 用函數
function Enum() {}
Enum.ColorType = {red:0, blue:1, green:2}
document.write(Enum.ColorType.blue);
方法3: 用new 建立對像
var enumObj = new Object();
enumObj.fontSize = {small:10, medium:12, large:14}
document.write(enumObj.fontSize.small);
http://stackoverflow.com/questions/287903/enums-in-javascript
