https://xn--400-eddplucwdhb0e2b.xn--p1ai/js/js_constant.js

1//http://deer.org.ua/2010/04/10/1/
2var constant = (function () {
3    var constants = [1, 2, 3];
4    return {
5        define: function (name, value) {
6            
7            if (typeof(constants[name]) == "undefined") {
8                constants[name] = value;
9                return true;
10            }
11            return false;
12        },
13        defined: function (name) {
14            
15            if (typeof(constants[name]) == "undefined")
16                return false;
17            else return true;
18        },
19        get: function (name) {
20            return constants[name];
21        }
22    };
23}());