Question

I have this module pattern that stores a bunch of vars. I want to create a single function that can return any given var (the real module has real functions- this is just a striped down version).

var myObject = (function() {
  var _savings = '100',
      _year = new Date().getFullYear(),
      _phone = '1-800-555-1234';

return {
  getMe: function(param) {
    return eval(param);
}

an example useage would be myObject.getMe('phone'); would poop out “1-800-555-1234”

I want to avoid the use of eval(), since its so evil.

Thanks!

Answer 1

In javascript, object.field is equivalent to object["field"].

Now, the problem here is that you’ve created some private variables that don’t belong to an object, so accessing them will be tricky.

An alternative approach would be this:

var myObject = (function() {
  var _privates = {
    savings: '100',
    year: new Date().getFullYear(),
    phone: '1-800-555-1234'
  };

return {
  getMe: function(param) {
    return _privates[param];
  }
}())