Question

我有以下jQuery代码（从这里的某个地方获取另一个问题）：

$(document).ready(function(){
    $("#profile_dropdown").mouseenter(function(){
        clearTimeout($(this).data('timeoutId'));
        $("#profile_dropdown_content").fadeIn("slow");
    }).mouseleave(function(){
        var someElement = $("#profile_dropdown");
        var timeoutId = setTimeout(function(){
            $("#profile_dropdown_content").fadeOut("slow");
        }, 650);
        //set the timeoutId, allowing us to clear this trigger if the mouse comes back over
        someElement.data('timeoutId', timeoutId); 
    });
});

它按预期工作，但是 - 如果将鼠标移到它上面，我无法弄清楚如何显示#profile_dropdown_content。如果鼠标移开，如何让它渐渐消失...

有什么想法吗？

Answer 1

将#profile_dropdown_content嵌套在#profile_dropdown容器中并使用悬停事件。

jsfiddle：http://jsfiddle.net/UsWYq/1/

<强> JS

$(document).ready(function(){
    $("#profile_dropdown").hover(function(){
        clearTimeout($(this).data('timeoutId'));
        $("#profile_dropdown_content").fadeIn("slow");
    }, function(){
        var someElement = $("#profile_dropdown");
        var timeoutId = setTimeout(function(){
            $("#profile_dropdown_content").fadeOut("slow");
        }, 650);
        //set the timeoutId, allowing us to clear this trigger if the mouse comes back over
        someElement.data('timeoutId', timeoutId); 
    });
});

<强> HTML

<div id="profile_dropdown">
    <div class="inner">Hover Me</div>
    <div id="profile_dropdown_content">Display Me</div>
</div>
<div id="profile_dropdown"></div>

<强> CSS

#profile_dropdown {
    background:whitesmoke;
    float:left;
}
#profile_dropdown .inner {
    height:100px;
    width:100px;
}
#profile_dropdown_content {
    display:none;
    background:red;
    height:100px;
    width:100px;
}

选项2

你可以做的另一件事是CSS3过渡：http://jsfiddle.net/Ezxm5/

#profile_dropdown {
    background:whitesmoke;
    float:left;
}
#profile_dropdown:hover #profile_dropdown_content {
    display:block;
    opacity:1;
    height:100px;
}
#profile_dropdown .inner {
    height:100px;
    width:100px;
}
#profile_dropdown_content {
    opacity:0;
    background:red;
    height:0;
    width:100px;
    overflow:hidden;
    -webkit-transition: opacity 0.4s ease-in, height 0.4s ease-out;
    -moz-transition: opacity 0.4s ease-in, height 0.4s ease-out;
    -ms-transition: opacity 0.4s ease-in, height 0.4s ease-out;
    -o-transition: opacity 0.4s ease-in, height 0.4s ease-out;
    transition: opacity 0.4s ease-in, height 0.4s ease-out;
}

Answer 2

将元素换行到另一个div，然后将mouseenter和mouseleave函数绑定到包装器。

模拟HTML

<div id="profile_wrapper">
    <div id="profile_dropdown">Profile Dropdown</div>
    <div id="profile_dropdown_content">This is some information about me.  I write code all day long.</div>
</div>

<强>的Javascript

$(document).ready(function(){
    $("#profile_wrapper").mouseenter(function(){
        clearTimeout($(this).data('timeoutId'));
        $("#profile_dropdown_content").fadeIn("slow");
    }).mouseleave(function(){
        var someElement = $("#profile_dropdown");
        var timeoutId = setTimeout(function(){
            $("#profile_dropdown_content").fadeOut("slow");
        }, 650);
        //set the timeoutId, allowing us to clear this trigger if the mouse comes back over
        someElement.data('timeoutId', timeoutId);
    });
});

http://jsfiddle.net/H7Hvf/1/

如果鼠标悬停在DIV上，则显示DIV

2 个答案: