Sort by fields

Sort by fields

You can write a simple helper function that accepts an array of fields to sort by. The logic is simple: Iterate over the fields and return -1 if a is less then b or 1 if a is greater then b. If they are equal, do the same comparison for the next field. If all comparisons are equal, return 0.

const data = [
   {id:1,created:"2020:12:12T10:12:56",start:"2020:12:10"},
   {id:1,created:"2020:12:12T10:12:58",start:"2020:12:09"},
   {id:1,created:"2020:12:12T10:12:57",start:"2020:12:08"},
   {id:1,created:"2020:12:12T10:12:53",start:"2020:12:11"},
   {id:1,created:"2020:12:12T10:12:53",start:"2020:12:09"},
   {id:1,created:"2020:12:12T10:12:53",start:"2020:12:10"},
  ]
  
  function sortByFields (arr, fields) {
      return arr.sort ((a, b) => {
          for (const field of fields) {
              if (a[field] < b[field]) return -1;
              if (a[field] > b[field]) return 1;
          }
          return 0
      })
  }

const srt = sortByFields(data, ['created', 'start']);

console.log (srt)