enum-names.js

/*
  No step. Only for example.
  This is function will be created at run-time in memory really.
*/
function selfInvokable(enumType) {
  // step 3: enumType["Alex"] = 0;
  // step 4: enumType[enumType["Alex"]] = "Alex";
  // step 5: enumType["Alex"] = 1;
  // step 6: enumType[enumType["Denis"]] = "Denis";
}<br />
// step 0: var Names = undefined;
// step 1: if(!Names) { Names = {}; }
// step 2: selfInvokable(Names);<br />