jQueryでのマウスホバーイベントの遅延処理のサンプルコード

(function($){
    $.fn.hoverDelay = function(options){
        var defaults = {
            hoverDuring: 200,
            outDuring: 200,
            hoverEvent: function(){
                $.noop();
            },
            outEvent: function(){
                $.noop();    
            }
        };
        var sets = $.extend(defaults,options || {});
        var hoverTimer, outTimer;
        return $(this).each(function(){
            $(this).hover(function(){
                clearTimeout(outTimer);
                hoverTimer = setTimeout(sets.hoverEvent, sets.hoverDuring);
            },function(){
                clearTimeout(hoverTimer);
                outTimer = setTimeout(sets.outEvent, sets.outDuring);
            });    
        });
    }      
})(jQuery);

$("#test").hoverDelay({
    hoverEvent: function(){
        alert("经过我！");
    }
});

<div id="sosoFod">
    <h3 id="sosoweb" class="s1">网页</h3>
    <h3 id="sosoimg" class="s2">图片</h3>
    <h3 id="sosovid" class="s2">视频</h3>
    <h3 id="sosomus" class="s2">音乐</h3>
    <h3 id="sososoba" class="s2">搜吧</h3>
    <h3 id="sosowenwen" class="s2">问问</h3>
    <h3 id="sosoqz" class="s2">博客</h3>
    <h3 style="cursor:pointer;" class="s2">更多▼
        <div style="display:none;" class="more" id="tm">
          <ul>
            <li><a href="#">综合</a></li>
            <li><a href="#">新闻</a></li>  
            <li><a href="#">词典</a></li>
            <li><a href="#">生活</a></li>
            <li><a href="#">百科</a></li>
            <li style="border-top:1px solid rgb(178, 208, 234);"><a href="#">所有产品</a></li>
          </ul>
       </div>
    </h3>
</div>

$(".s2").each(function(){$("#sosoFod h3").each(function(){
    var that = $(this);
    var id = that.attr("id");
    if(id){
        that.hoverDelay({
            hoverEvent: function(){
                $(".s1").attr("class","s2");that.attr("class","s1"); //感谢“type23”提供了绑定对象方法
                $(this).attr("class","s1"); 
            }        
        });
    }else{
        that.hoverDelay({
            outDuring: 1000,
            hoverEvent: function(){
                $("#tm").show();        
            },
            outEvent: function(){
                $("#tm").hide();
            }
        });
    }
});