Javascript custom sort algorithm according to another array

Question

I have this two arrays

var refArray = [\'India\',\'Pakistan\',\'Nepal\',\'Bhutan\',\'SreeLanka\',\'Singapore\',\'Thailand\',\'China\',\'Russia\']
var beenThere          


        

Answer 1

Try to use indexOf:

beenThere.sort(function(a, b) {
    return refArray.indexOf(a) - refArray.indexOf(b); 
}); // ['India','Bhutan','Russia']