Remove in animation() doesn't remove

Question

I have a div id'ed #scenario which has a number of

elements as children. I want to have a function that fades them out one by one in reverse order and then removes them from the DOM. I'm using jQuery.

My code:

function fadeAndDelete() {
  var elements = $("#scenario").children().get().reverse();
  $.each(
    elements, function(index, element) {
      element.animate(
        {'color': 'rgba(0, 0, 0, 0)'}, 1000, function() {
          $(this).remove();
        }
      );
    }
  )
};

I also tried to use element.remove() and $(element).remove(), and none of them worked.

Bonus points: in an ideal world, there would be a time-gap between the removals of the element (as if using a sleep() function inbetween the each() cycles).

user_2181514 · Answer

The animate() you're using is the DOM animate, not jquery's:

https://developer.mozilla.org/en-US/docs/Web/API/Element/animate

animate(keyframes, options)

There's no callback parameter for this function, so it's not that .remove() doesn't work, it's that the function is never called.

To use jquery's animate you need a jquery object:

$.each(elements, function(index, element) {
      $(element).animate(...

However, note that jquery is notorious for not being able animate colours without an additional plugin or using css, so your code will then not animate, but the .remove() will be called.

For the one-at-a-time scenario, you can use setTimeout. There's plenty of existing answers on SO for this, but here's your code:

function fadeAndDelete() {
  var elements = $("#scenario").children().get().reverse();

  $.each(elements, function(index, element) {
    setTimeout(function() { 
      $(element).fadeOut(2000, function() { 
        this.remove(); 
      }); 
    }, index*500);
  });
};

fadeAndDelete();



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Remove in animation() doesn't remove

1 Answers