How to Sort a Multi-Column Array in JavaScript by Owner and Publication Name?

Customized Multi-Column Array Sorting in JavaScript

Sorting arrays based on multiple columns is a common task in programming. This question explores how to achieve this in JavaScript for a specific array structure.

The array in question is a multidimensional array with the following structure:

[publicationID][publication_name][ownderID][owner_name]

The goal is to sort the array first by owner_name and then by publication_name.

To sort on multiple columns, the custom sort function needs to consider both criteria. The following code demonstrates how to modify the provided mysortfunction to achieve the desired result:

function mysortfunction(a, b) {

  var o1 = a[3].toLowerCase();
  var o2 = b[3].toLowerCase();

  var p1 = a[1].toLowerCase();
  var p2 = b[1].toLowerCase();

  if (o1 < o2) return -1;
  if (o1 > o2) return 1;
  if (p1 < p2) return -1;
  if (p1 > p2) return 1;
  return 0;
}

In this function:

• o1 and o2 are converted to lowercase for case-insensitive comparison of owner_name.
• p1 and p2 are converted to lowercase for case-insensitive comparison of publication_name.
• If the owner_name values are different, the function sorts based on them.
• If the owner_name values are the same, the function uses the publication_name for tiebreaking.

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