CODEWITHSUNDEEP
jquerycssjquery-animate
Brooklyn Nicholson
Brooklyn Nicholson

Reputation: 646

Background color "animation" with jQuery

I'm trying to create a simple animation in which the background-color slides into place. So far it's successful, but there's one major issue: the text on the block moves and I can't figure out how to stop it.

I could position the text above, but I need to change the color as well and if I do that in jQuery it creates a mess.

The CSS:

.button {
    display: block;
    width: 130px;
    height: 40px;
    cursor: pointer;
    position: fixed;
    z-index: 1;
    top: 15px;
    left: 15px;
    text-align: center;
    color: #FFF;
    overflow: hidden;
    text-decoration: none;
    font-size: 23px;
    text-transform: lowercase;
    font-family: Helvetica, Arial, sans-serif;
    background: #FFF
} .button:hover { color: #FFF }
.button h1 {
    display: inline-block;
    position: absolute;
    top: 0;
    left: 0;
    width: 130px;
    height: 40px;
    font-size: 23px;
    margin: 0;
    background-color: blue
}
.button h1.back {
    z-index: 999;
    color: #000;
    margin-left: -130px;
    overflow: hidden;
    background-color: red
}
.button h1 span {
    position: absolute;
    left: 0;
    top: 10%;
    width: 130px;
    height: 40px;
    text-align: center
}

Then the jQuery:

$('.button').hover(function() {
    var el = $(this);
    el.children('.back').animate({
        marginLeft: '0'
    }, 30, 'swing');
}, function() {
    var el = $(this);
    el.children('.back').animate({
        marginLeft: '-130px'
    }, 30, 'swing');
});

It creates a great animation. But the text, it slides with it. How can I prevent this without glitchy colour changes?

Here is the jsfiddle: http://jsfiddle.net/WERFJ/

Upvotes: 1

Views: 1298

Answers (2)

bricker
bricker

Reputation: 8941

Two things:

  1. http://jsfiddle.net/WERFJ/13/ It might need a little tweaking but that's the effect you were after. Basically I just took the text out of the h1's and put a z-index on it so it's always in front, then used .button:hover span { color: #000 }

  2. Using h1's to do this isn't a proper use of h1. I would just use regular div's.

Upvotes: 2

Jared Farrish
Jared Farrish

Reputation: 49188

You could put the text on it's only layer:

<a href="#" class="button">
    <h1 class="front"><span></span></h1>
    <h1 class="back"><span></span></h1>
    <h1 class="text"><span>hello</span></h1>
</a>

http://jsfiddle.net/WERFJ/14/

And maybe with a text effect on complete:

$(function() {
    var $text = $('.text');
    $('.button').hover(function() {
        $(this).children('.back').animate({
            marginLeft: '0',
        }, 100, 'swing', function(){
            $text.css('color','white');
        });
    }, function() {
        $(this).children('.back').animate({
            marginLeft: '-130px'
        }, 100, 'swing', function(){
            $text.css('color','black');
        });
    });

});

http://jsfiddle.net/WERFJ/17/

Upvotes: 0

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