jQuery Forum

function looseCharacterMatch(a, b) {a = a.split("");
  b = b.substring(0,a.length);
  var c = true;
  for (var i = 0; i < a.length; i++) {
    if (b.replace(a[i], "") == b) {
      c = false;
    }
    b = b.replace(a[i], "");
  }
  return c;
}

$("#plz").on("keyup", function () {
  var value = $(this).val().toLowerCase();

  $("#list").children().each(function () {
    var text = $(this).text().toLowerCase();
    $(this)[!looseCharacterMatch(value,text) ? 'hide':'show']();
  });
});