How to easeout this animation

Question

I need to animate this animation during exact time. How to easing this animation.

$( "#slice1" ).click(function() {
  $("#post1").toggleClass("post"));
});

Answer 1

If you are talking about jquery UI you can use a second optional parameter to set the duration:

$(function() {
    $( "#button" ).click(function() {
      $( "#effect" ).toggleClass( "newClass", 1000 );
      return false;
    });
  });

DEMO

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