How to make in datetimepicker so that when you click on the calendar icon again, the calendar closes?

Question

JavaScript

How to make in datetimepicker so that when you click on the calendar icon again, the calendar closes by analogy if you click on input?

I tried 2 options, but the calendar does not close when you click on the calendar icon:

$('.fa-calendar').on('click' ,function(){
    // Первый вариант
    if($(this).prev().not(':focus')) {
        $(this).prev().trigger('focus');
    } else {
        $(this).prev().trigger('blur');
    }

    // второй вариант
    if($(this).prev().not(':focus')) {
        $(this).prev().focus();
    }
    else {
        $(this).prev().blur();
   }
});

Answer 1

What plugin are you using? Or did you do it yourself?