javascript - 对具有年份和月份的字符串数组进行排序

Question

我有一个像下面这样的数组

var testArr = ["2009-feb", "2009-jan", "2010-mar", "2010-jan", "2011-jul", "2011-sep", "2011-jan", "2012-jan", "2012-dec", "2012-feb", "2013-may", "2013-jul", "2013-jun", "2014-jan", "2014-dec", "2014-may", "2015-may", "2015-jan", "2015-jun", "2016-jan", "2016-dec"];

我需要对它们进行排序

var sortOrder="asc";
testArr.sort(function (a, b) {
    if (sortOrder == "asc") {
        return a.localeCompare(b);
    }
    else {
        return b.localeCompare(a);
    }
});

输出是

["2009-feb","2009-jan","2010-jan","2010-mar","2011-jan","2011-jul","2011-sep","2012-dec","2012-feb","2012-jan","2013-jul","2013-jun","2013-may","2014-dec","2014-jan","2014-may","2015-jan","2015-jun","2015-may","2016-dec","2016-jan"]   

这是错误的。

Answer 1

我想你的意思是按日期排序

testArr.sort(function(dateA, dateB) {
  return new Date(dateA) - new Date(dateB)
})

如果你想要它最新鲜的日期，首先将 dateA 与 dateB 翻转。

在tonic上运行示例: https://tonicdev.com/lipp/sort-dates