How to compare Unicode strings in Javascript?

Question

When I wrote in JavaScript \"Ł\" > \"Z\" it returns true. In Unicode order it should be of course false. How to fix this? My site i

Answer 1

Here is an example for the french alphabet that could help you for a custom sort:

var alpha = function(alphabet, dir, caseSensitive){
  return function(a, b){
    var pos = 0,
      min = Math.min(a.length, b.length);
    dir = dir || 1;
    caseSensitive = caseSensitive || false;
    if(!caseSensitive){
      a = a.toLowerCase();
      b = b.toLowerCase();
    }
    while(a.charAt(pos) === b.charAt(pos) && pos < min){ pos++; }
    return alphabet.indexOf(a.charAt(pos)) > alphabet.indexOf(b.charAt(pos)) ?
      dir:-dir;
  };
};

To use it on an array of strings a:

a.sort(
  alpha('ABCDEFGHIJKLMNOPQRSTUVWXYZaàâäbcçdeéèêëfghiïîjklmnñoôöpqrstuûüvwxyÿz')
);

Add 1 or -1 as the second parameter of alpha() to sort ascending or descending.
Add true as the 3rd parameter to sort case sensitive.

You may need to add numbers and special chars to the alphabet list