假设我有一个包含几个对象的数组:

var array = [{id: 1, date: Mar 12 2012 10:00:00 AM}, {id: 2, date: Mar 8 2012 08:00:00 AM}];

如何按日期元素排序这个数组,从最接近当前日期和时间的日期下来?请记住,数组可能有许多对象,但为了简单起见,我使用2。

我会使用排序函数和自定义比较器吗?


当前回答

我要在这里加上这个,因为有些人可能无法计算出如何反转这个排序方法。

要按“出现”排序,我们可以简单地交换a和b,如下所示:

your_array.sort ( (a, b) => {
      return new Date(a.DateTime) - new Date(b.DateTime);
});

注意a现在在左边,b在右边,D!

其他回答

@Phrogz的回答都很棒,但这里有一个很棒的、更简洁的回答:

array.sort(function(a,b){return a.getTime() - b.getTime()});

用箭头函数的方式

array.sort((a,b)=>a.getTime()-b.getTime());

在Javascript中排序日期

谢谢Ganesh Sanap。按日期字段从旧到新对项目进行排序。使用它

 myArray = [{transport: "Air",
             load: "Vatican Vaticano",
             created: "01/31/2020"},
            {transport: "Air",
             load: "Paris",
             created: "01/30/2020"}] 

        myAarray.sort(function(a, b) {
            var c = new Date(a.created);
            var d = new Date(b.created);
            return c-d;
        });

对于任何想要按日期(英国格式)排序的人,我使用以下方法:

//Sort by day, then month, then year
for(i=0;i<=2; i++){
    dataCourses.sort(function(a, b){

        a = a.lastAccessed.split("/");
        b = b.lastAccessed.split("/");

        return a[i]>b[i] ? -1 : a[i]<b[i] ? 1 : 0;
    }); 
}

您的数据需要更正:

var array = [{id: 1, date: "Mar 12 2012 10:00:00 AM"},{id: 2, date: "Mar 28 2012 08:00:00 AM"}];

在修正数据之后,你可以使用这段代码:

function sortFunction(a,b){  
    var dateA = new Date(a.date).getTime();
    var dateB = new Date(b.date).getTime();
    return dateA > dateB ? 1 : -1;  
}; 

var array = [{id: 1, date: "Mar 12 2012 10:00:00 AM"},{id: 2, date: "Mar 28 2012 08:00:00 AM"}];
array.sort(sortFunction);​

我推荐GitHub: Array sortBy - sortBy方法的最佳实现,它使用施瓦茨变换

但是现在我们将尝试这种方法。 让我们创建一个方法来排序数组,它能够按某些属性排列对象。

创建排序函数

var sortBy = (function () {
  var toString = Object.prototype.toString,
      // default parser function
      parse = function (x) { return x; },
      // gets the item to be sorted
      getItem = function (x) {
        var isObject = x != null && typeof x === "object";
        var isProp = isObject && this.prop in x;
        return this.parser(isProp ? x[this.prop] : x);
      };
      
  /**
   * Sorts an array of elements.
   *
   * @param {Array} array: the collection to sort
   * @param {Object} cfg: the configuration options
   * @property {String}   cfg.prop: property name (if it is an Array of objects)
   * @property {Boolean}  cfg.desc: determines whether the sort is descending
   * @property {Function} cfg.parser: function to parse the items to expected type
   * @return {Array}
   */
  return function sortby (array, cfg) {
    if (!(array instanceof Array && array.length)) return [];
    if (toString.call(cfg) !== "[object Object]") cfg = {};
    if (typeof cfg.parser !== "function") cfg.parser = parse;
    cfg.desc = !!cfg.desc ? -1 : 1;
    return array.sort(function (a, b) {
      a = getItem.call(cfg, a);
      b = getItem.call(cfg, b);
      return cfg.desc * (a < b ? -1 : +(a > b));
    });
  };
  
}());

设置无序数据

var data = [
  {date: "2011-11-14T17:25:45Z", quantity: 2, total: 200, tip: 0,   type: "cash"},
  {date: "2011-11-14T16:28:54Z", quantity: 1, total: 300, tip: 200, type: "visa"},
  {date: "2011-11-14T16:30:43Z", quantity: 2, total: 90,  tip: 0,   type: "tab"},
  {date: "2011-11-14T17:22:59Z", quantity: 2, total: 90,  tip: 0,   type: "tab"},
  {date: "2011-11-14T16:53:41Z", quantity: 2, total: 90,  tip: 0,   type: "tab"},
  {date: "2011-11-14T16:48:46Z", quantity: 2, total: 90,  tip: 0,   type: "tab"},
  {date: "2011-11-31T17:29:52Z", quantity: 1, total: 200, tip: 100, type: "visa"},
  {date: "2011-11-01T16:17:54Z", quantity: 2, total: 190, tip: 100, type: "tab"},
  {date: "2011-11-14T16:58:03Z", quantity: 2, total: 90,  tip: 0,   type: "tab"},
  {date: "2011-11-14T16:20:19Z", quantity: 2, total: 190, tip: 100, type: "tab"},
  {date: "2011-11-14T17:07:21Z", quantity: 2, total: 90,  tip: 0,   type: "tab"},
  {date: "2011-11-14T16:54:06Z", quantity: 1, total: 100, tip: 0,   type: "cash"}
];

使用它

最后,通过“date”属性将数组排列为字符串

//sort the object by a property (ascending)
//sorting takes into account uppercase and lowercase
sortBy(data, { prop: "date" });

如果你想忽略字母大小写,设置"parser"回调:

//sort the object by a property (descending)
//sorting ignores uppercase and lowercase
sortBy(data, {
    prop: "date",
    desc: true,
    parser: function (item) {
        //ignore case sensitive
        return item.toUpperCase();
    }
});

如果你想把"date"字段作为date类型:

//sort the object by a property (ascending)
//sorting parses each item to Date type
sortBy(data, {
    prop: "date",
    parser: function (item) {
        return new Date(item);
    }
});

在这里你可以玩上面的例子: jsbin.com/lesebi