javascript sort list of lists by sublist second entry

Question

How can I sort a list of lists by order of the last element?

Here is my best attempt so far:

var mylist = [ [1, 'c'], [3, 'a'],  [5, 'b']];
mylist.sort(function(a,b){return a[1]-b[1];});

My call to sort has not effect, and mylist remains in the same order.

Answer 1

var mylist = [ [1, 'c'], [3, 'a'],  [5, 'b']];
mylist.sort(function(a,b){return a[1].localeCompare(b[1]);});
console.log(mylist)

Use a[1].localeCompare(b[1]) to sort the list in the ascending order or b[1].localeCompare(a[1]) for other way round. This way you will be comparing two strings. You were trying to subtract one string from the other which return NaN.