获取最近的日期，下划线

Question

Got this:

 [{
  "title": "qq",
    "dateValuePair": {
      "date": "2016-04-29T22:00:00.000Z",
      "value": 243500.3491
     }
  },
  {
    "title_sv": "ccc",
    "dateValuePair": {
      "date": "2016-03-29T22:00:00.000Z",
      "value": 243500.3491
     }
 }]

I need a function that returns the object with the most recent date.

  {
    "title_sv": "ccc",
    "dateValuePair": {
      "date": "2016-03-29T22:00:00.000Z",
      "value": 243500.3491
     }
 }

Is there some neat one line underscore trick to do this?

Answer 1

You can use _.max :

var array = [{
  "title": "qq",
    "dateValuePair": {
      "date": "2016-04-29T22:00:00.000Z",
      "value": 243500.3491
     }
  },
  {
    "title_sv": "ccc",
    "dateValuePair": {
      "date": "2016-03-29T22:00:00.000Z",
      "value": 243500.3491
     }
 }];

var result = _.max(array, function(el) { 
  return new Date(el.dateValuePair.date).getTime();
});