Answer 1

Constants in javascript are somewhat new, but otherwise the synthax is:

const ANSWER = 42;

Another way to do it (from Burke at StackOverflow):

var CONFIG = (function() {
var private = {
'MY_CONST': 'foo',
'ANOTHER_CONST': 'bar'
};
return {
get: function(name) { return private[name]; }
};
})();
alert(CONFIG.get('MY_CONST'));
alert(CONFIG.get('ANOTHER_CONST'));