es6 generator weird demo

es6_generator_example.js

var yieldValueBox = [];
var nextValueBox = []
function * god () {
  for (var i = 0; i < 5; i++) {
    a = yield ({index: i, time: (new Date()).getTime()})
    yieldValueBox.push(a)
    console.log('Next passed: ',  a);
  }
}
var g = god();
[1,2,3,4,5,6].forEach(function(element) { nextValueBox.push(g.next(element)) })