SOURCE

var data = []
for (var i = 0; i< 6; i++) {
  var data1 = new Date()
  data.push({created: data1.valueOf(), name: 'liushui'})
}

data.map(function(k) {
  var str = new Date(k.created)
  console.log(str)
  return {
    created: str,
    name: k.name
  }
})
console.log(data)