How to stop clearQueue() from clearing in-future queues?

Question

I have a button, upon clicking on which a div is shown in 500ms and then after 500ms class shake is added onto that div. This shake classe is then removed after 2 seconds with delay. What I want is if user keep pressing on button then all callbacks become canceled except the last one.

Problematic code if click is pressed many time:

$("button").click(function() {
  $(".content").show({
    duration: 500,
    done: function() {
      $(".content").addClass("shake");
      var time = parseFloat($(".content").css("transition-duration")) * 1000;
     
      $(".content").delay(time).queue(function() {
        console.log("shake");
        $(".content").removeClass("shake");
        $(".content").dequeue();
      });
    }
  })
});

div.content {
  border: 1px solid red;
  transition: background-color 2s ease-out;
  background-color: black;
  display: none;
}

div.content.shake {
  background-color: red;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button>click</button>
<div class="content">Content</div>

My solution with clearQueue:

$("button").click(function() {
  $(".content").show({
    duration: 500,
    done: function() {
      $(".content").clearQueue();
      $(".content").addClass("shake");
      var time = parseFloat($(".content").css("transition-duration")) * 1000;
     
      $(".content").delay(time).queue(function() {
        console.log("shake");
        $(".content").removeClass("shake");
        $(".content").dequeue();
      });
    }
  })
});

div.content {
  border: 1px solid red;
  transition: background-color 2s ease-out;
  background-color: black;
  display: none;
}

div.content.shake {
  background-color: red;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button>click</button>
<div class="content">Content</div>

But this method never lets the shake class to be added. Because the queue mentioned after clearQueue is also cleared.

How can I prevent clearQueue() from clearing in-future queues? And why does clearQueue() behave this way? How does it know what queue would be added in future?

Answer 1

Provide a name for the .delay() and .queue() calls. Check if .content .queue(queueName) has a .length before setting .delay(time, queueName). Chain .dequeue(queueName) to .queue(queueName) call instead of calling .dequeue() within .queue() function. Note that .delay() also adds a function to element .queue() array

$("button").click(function() {
  $(".content").show({
    duration: 500,
    done: function() {
      $(".content").clearQueue();
      $(".content").addClass("shake");
      var time = parseFloat($(".content").css("transition-duration")) * 1000;
      if (!$(".content").queue("shake").length)
      $(".content").delay(time, "shake").queue("shake", function() {
        console.log("shake");
        $(".content").removeClass("shake");
      }).dequeue("shake");
    }
  })
});

div.content {
  border: 1px solid red;
  transition: background-color 2s ease-out;
  background-color: black;
  display: none;
}

div.content.shake {
  background-color: red;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button>click</button>
<div class="content">Content</div>