我想使用 ramda.js 按升序对日期进行排序

Question

I tried the following code but it doesn't work:

const startDate = ["2020-07-17", "2090-09-27", "1920-12-11"]

const pathComponents = R.split('-');
  const sortDate = R.sortBy(R.ascend(pathComponents(R.prop(startDate))));


const sortDate = R.sortBy(R.prop('startDate'));

const sortDate = R.sortBy(R.descend( R.prop('startDate')));

Answer 1

You can use sort :

R.sort((a,b)=>new Date(b) - new Date(a), ["10 june 1859", "12 august 1387", "30 december 1998"]); 

If you want it in descent just change new Date(b) - new Date(a) for new Date(a) - new Date(b)

Snippet of the result with javascript vanilla:

 console.log(["10 june 1859", "12 august 1387", "30 december 1998"].sort((a,b)=>new Date(b) - new Date(a)))

Answer 2

I'm missing something here. I don't know if this is all you want to do, or if there is something additional going on:

 const startDate = ["2020-07-17", "2090-09-27", "1920-12-11"] const sortDate = sort (descend (identity), startDate) console.log (sortDate)

 <script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.27.0/ramda.js"></script> <script> const {sort, descend, identity} = R </script>

Dates in that format are already intrinsically sortable; that's part of the point of the format.