Question

我想根据月份对数组进行排序。日期采用字符串格式： -

datesArray = [ "May-17-2018", "Jan-06-1", "Nov-29-2018", "Nov-01-2018", "Apr-12-2018", "Aug-09-2018", "Feb-18-2018", "Feb-08-2018", "Jan-28-2018", "Jan-26-2018", "Mar-15-2018", "Oct-04-2018", "Jan-25-2018", "Jun-14-2018", "Dec-27-2018", "Jan-29-2018", "Jan-21-2018", "Jan-16-2018", "Jan-20-2018", "Mar-22-2018", "Feb-01-2018", "Mar-01-2018", "Mar-08-2018", "Apr-26-2018", "Feb-22-2018", "Apr-19-2018", "Mar-29-2018", "Sep-06-2018", "Apr-05-2018", "May-03-2018", "May-10-2018", "Feb-15-2018", "Jul-12-2018" ]

我已实现此代码，但根据此代码对我的号码进行排序。

 datesArray.sort(function(a,b) {
  a = a.split('-').reverse().join('');
  b = b.split('-').reverse().join('');
  return a > b ? 1 : a < b ? -1 : 0;
 });

告诉我如何做到这一点。我搜索了这么多，但找不到任何结果。

Answer 1

您可以将给定日期转换为符合ISO 8601的日期，并按字符串对其进行排序。

＆＃13;

var array = ["May-17-2018", "Jan-06-2017", "Nov-29-2018", "Nov-01-2018", "Apr-12-2018", "Aug-09-2018", "Feb-18-2018", "Feb-08-2018", "Jan-28-2018", "Jan-26-2018", "Mar-15-2018", "Oct-04-2018", "Jan-25-2018", "Jun-14-2018", "Dec-27-2018", "Jan-29-2018", "Jan-21-2018", "Jan-16-2018", "Jan-20-2018", "Mar-22-2018", "Feb-01-2018", "Mar-01-2018", "Mar-08-2018", "Apr-26-2018", "Feb-22-2018", "Apr-19-2018", "Mar-29-2018", "Sep-06-2018", "Apr-05-2018", "May-03-2018", "May-10-2018", "Feb-15-2018", "Jul-12-2018"];

array.sort(function (a, b) {
    function getISO(s) {
        var months = { Jan: '01', Feb: '02', Mar: '03', Apr: '04', May: '05', Jun: '06', Jul: '07', Aug: '08', Sep: '09', Oct: '10', Nov: '11', Dec: '12' };
        return s.replace(/^(...)-(..)-(....)$/, (_, m, d, y) => [y, months[m], d].join('-'));
    }

    return getISO(a).localeCompare(getISO(b));
});
  
console.log(array);

＆＃13;

.as-console-wrapper { max-height: 100% !important; top: 0; }

＆＃13;

Answer 2

使用您月份的地图。

＆＃13;

var datesArray = [
  "May-17-2018",
  "Jan-06-1",
  "Nov-29-2018",
  "Nov-01-2018",
  "Apr-12-2018",
  "Aug-09-2018",
  "Feb-18-2018",
  "Feb-08-2018",
  "Jan-28-2018",
  "Jan-26-2018",
  "Mar-15-2018",
  "Oct-04-2018",
  "Jan-25-2018",
  "Jun-14-2018",
  "Dec-27-2018",
  "Jan-29-2018",
  "Jan-21-2018",
  "Jan-16-2018",
  "Jan-20-2018",
  "Mar-22-2018",
  "Feb-01-2018",
  "Mar-01-2018",
  "Mar-08-2018",
  "Apr-26-2018",
  "Feb-22-2018",
  "Apr-19-2018",
  "Mar-29-2018",
  "Sep-06-2018",
  "Apr-05-2018",
  "May-03-2018",
  "May-10-2018",
  "Feb-15-2018",
  "Jul-12-2018"
];

var mapDates = {
  "Jan": 1,
  "Feb": 2,
  "Mar": 3,
  "Apr": 4,
  "May": 5,
  "Jun": 6,
  "Jul": 7,
  "Aug": 8,
  "Sep": 9,
  "Oct": 10,
  "Nov": 11,
  "Dec": 12
};

datesArray.sort(function(a, b) {
  if(mapDates[a.split('-')[0]] < mapDates[b.split('-')[0]]) return -1;
    if(mapDates[a.split('-')[0]] > mapDates[b.split('-')[0]]) return 1;
    return 0;
});

console.log(datesArray);

＆＃13;

Answer 3

在比较之前，最好将日期字符串转换为日期对象。

var datesArray = ["May-17-2018", "Jan-06-2017", "Nov-29-2018", "Nov-01-2018", "Apr-12-2018", "Aug-09-2018", "Feb-18-2018", "Feb-08-2018", "Jan-28-2018", "Jan-26-2018", "Mar-15-2018", "Oct-04-2018", "Jan-25-2018", "Jun-14-2018", "Dec-27-2018", "Jan-29-2018", "Jan-21-2018", "Jan-16-2018", "Jan-20-2018", "Mar-22-2018", "Feb-01-2018", "Mar-01-2018", "Mar-08-2018", "Apr-26-2018", "Feb-22-2018", "Apr-19-2018", "Mar-29-2018", "Sep-06-2018", "Apr-05-2018", "May-03-2018", "May-10-2018", "Feb-15-2018", "Jul-12-2018"];

 datesArray.sort(function(a,b) {
  var date_items = a.split('-');
  var date_a = Date.parse( date_items[0] + ' ' + date_items[1] + ' ' + date_items[2])
  date_items = b.split('-');
  var date_b = Date.parse( date_items[0] + ' ' + date_items[1] + ' ' + date_items[2])
  
  //date_a = Date.parse(a); //You can replace above parser with other appropriate one
  //date_b = Date.parse(b);
  return date_a - date_b;
 });
 
 console.log(datesArray)

Answer 4

这适用于Chrome。根据它的外观，Chrome的Date实现接受构造函数的其他参数语法比其他浏览器更多：

＆＃13;

datesArray = [
  "May-17-2018",
  "Jan-06-1",
  "Nov-29-2018",
  "Nov-01-2018",
  "Apr-12-2018",
  "Aug-09-2018",
  "Feb-18-2018",
  "Feb-08-2018",
  "Jan-28-2018",
  "Jan-26-2018",
  "Mar-15-2018",
  "Oct-04-2018",
  "Jan-25-2018",
  "Jun-14-2018",
  "Dec-27-2018",
  "Jan-29-2018",
  "Jan-21-2018",
  "Jan-16-2018",
].map(date => new Date(date).toJSON().substr(0, 10)).sort((a,b) => { return a < b ? -1 : (a > b ? 1 : 0) })

＆＃13;

如果日期格式排序字符串日期数组： - “Feb-01-2018”？

4 个答案: