Change image and fadeIn on hover

问题

I have the following code :

$('div.test').hover(function() {
    $(this).find('img').attr('src', 'img/personale/test2.png');
}, function() {
    $(this).find('img').attr('src', 'img/personale/test.png');
});

How can i add a fadeIn effect while changing the image on hover?

回答1:

Try using fadeIn() and fadeOut() :

$('div.test').hover(function () {
    $(this).find('img').hide().attr('src', 'http://blog.stackoverflow.com/wp-content/uploads/StackExchangeLogo1.png').fadeIn(2000);
}, function () {
    $(this).find('img').fadeOut(2000,function(){
      $(this).attr('src','http://londontechnologyweek.co.uk/assets/uploads/2014/06/Stack-Overflow-Logo.png').fadeIn();
    });
});

.test{
    min-height:200px;
    text-align:center;
    border:1px solid;
}
.test img{
    width:100%;
    height:auto;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="test">
    <img src="http://londontechnologyweek.co.uk/assets/uploads/2014/06/Stack-Overflow-Logo.png"/>
</div>

来源：https://stackoverflow.com/questions/26324493/change-image-and-fadein-on-hover