How to set toggle close animation?

Question

JavaScript

There is a code like this

$(document).ready(function(){
  $(".css-check").click(function(){
    $(".telephone").animate({
      height:'toggle'
    }, 600, 'easeOutBack');
  });
});

The animation for opening (easeOutBack) is set, but it closes at a linear speed. How to fix?

Answer 1

And what does toggle in the height property mean in your example?
Why not use the slideToggle function? She does the same for you!

Answer 2

i like to add class and animate with css transition more. Eats less resources, but no animation in IE9 and below.