$.focus() not working

Question

The last example of jQuery\'s focus() documentation states

$(\'#id\').focus()

should make the input focused (active). I can\'t seem to get

Answer 1

Add a delay before focus(). 200 ms is enough

function focusAndCursor(selector){
  var input = $(selector);
  setTimeout(function() {
    // this focus on last character if input isn't empty
    tmp = input.val(); input.focus().val("").blur().focus().val(tmp);
  }, 200);
}