javascript - 投资组合列表中损坏的 animate() 算法

Question

html

<ul class="wrap">
    <li title="Lorem ipsum dolor sit amet"></li>
    <li title="consectetur adipisicing elit"></li>
    <li title="incididunt ut labore et dolore magna aliqua"></li>
    <li title="Ut enim ad minim veniam"></li>
    <li title="quis nostrud exercitation ullamco"></li>
    <li title="laboris nisi ut aliquip ex ea commodo"></li>
    <li title="Duis aute irure dolor in reprehenderit"></li>
    <li title=" Excepteur sint occaecat cupidatat non"></li>
    <div class="sub">
        <div class="bg"></div>
    </div>
</ul>

CSS

*{
    padding: 0;
    margin: 0;
    border: none;
}

body{
    padding: 100px;
}


ul{
    list-style: none;
    overflow: hidden;
    position: relative;
}

li{
    width: 220px;
    height: 220px;
    background: rgba(0, 0, 0, 0.6);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    float: left;
    margin-right: 20px;
    margin-bottom: 20px;
    display: block;
}

.sub{
    width: 210px;
    height: 210px;
    background: #ff3030;
    color: #fff;
    padding: 5px;
    position: absolute;
    display: none;
}

JQUERY

var li = $('.wrap').children('li'),
    sub = $('.sub');

li.on('mouseover', function() {
    sub.show();
    var left = $(this).offset().left,
        top = $(this).offset().top,
        text = $(this).attr('title'),
        bg = $('.bg');
    sub.stop().animate({
        left: left - $('.wrap').offset().left,
        top: top - $('.wrap').offset().top 
    });
    bg.stop().animate({
        opacity: 0
    }, function() {
        bg.text(text);
        bg.animate({
            opacity: 1
        });
    });
}).on('mouseleave', function() {
    sub.fadeOut();
});

这是 fiddle http://jsfiddle.net/GTHM4/

全宽看起来更好 http://jsfiddle.net/GTHM4/embedded/result/

如您所见，问题出在“损坏的”工作“mouseleave”事件中，而 div“bg”总是“想要”消失……怎么了？

Answer 1

一切正常

var li = $('.wrap').children('li'),
            sub = $('.sub'),
    wrap = $('.wrap');

        wrap.on('mouseover','li', function() {
            sub.show();
            var left = $(this).offset().left,
                top = $(this).offset().top,
                text = $(this).attr('title'),
                bg = $('.bg');
            sub.stop().animate({
                left: left - $('.wrap').offset().left,
                top: top - $('.wrap').offset().top 
            });
            bg.stop().animate({
                opacity: 0
            }, function() {
                bg.text(text);
                bg.animate({
                    opacity: 1
                });
            });
        }).on('mouseleave', function() {
            sub.fadeOut();
        });

演示 http://jsfiddle.net/fazalrasel/GTHM4/1/