按两列的值对二维数组 JavaScript 进行排序

Question

How can I quickly sort a 2d array in JavaScript according to value of both columns?

Array will appear in this format:

[12, 3]
[12, 2]
[54, 43]
[32, 12]

After sorting it should look like this:

[12, 2]
[12, 3]
[32, 12]
[54, 43]

Answer 1

You can use Array.sort and subtract the first items in the nested arrays to determine precedence. If they're equal, subtract the second items.

 const arr = [ [12, 3], [12, 2], [54, 43], [32, 12] ] const res = arr.sort((a,b) => a[0] - b[0] || a[1] - b[1]) console.log(res)