Question

I’ve got the following nav

<nav>
   <a href="#" class="current">HOME</a>
   <a href="#">ABOUT</a><a href="#">CONTACT</a>
</nav>

with this styling:

nav a {
    font-family: monospace;
    display: inline-block;
    width: 114px;
    height: 29px;
    font-size: 14px;
    line-height: 29px;
    text-align: center;
    text-decoration: none;
    color: white;
    background-color: #004870;
}
nav a {
    margin-left: 7px;
}
nav a.current{
    background-color: #585858;
    color: white;
}

And want to animate the BG color on mouseover to #585858 and back to #a3a3a3 after mouseleave and the style attribute to get removed again.

I tried this code but the style attribute remains after mouseleave:

$(document).ready(function() {
   $('nav a:not(.current)').mouseenter(function() {
   $(this).stop().animate( {
          backgroundColor: '#585858'
   }, 300);
});
$('nav a:not(.current)').mouseleave(function() {
$(this).stop().animate( {
    backgroundColor: '#004870'
}, 300).removeAttr('style');
    });
});

So what changes are needed to remove the style attribute after the animation finished?

Answer 1

You are missing here the fact, that jQuery.animate is asynchronous, so your removeAttr is called before the animation finishes. You should use the complete callback to call removeAttr.

You also need the jQuery.Color() plugin for jQuery.animate to be able to animate background-color.

var $this = $(this);
$this.stop().animate({ backgroundColor: jQuery.Color("rgb(0, 72, 112)") }, {
    duration: 300,
    complete: function() { $this.removeAttr('style') }
});