怎么判断鼠标是否在div上

Question

div添加onmouseover+mouseout事件就行了，mouseover设置全局遍历over为true，mouseout设置为false，blur的时候检查over是否为true

Answer 1

    <input type="text" onblur="checkMouseOver()">
    <div style="width:400px; height:100px; background:#ccc; margin-top:10px;"></div>
    <script>
        function checkMouseOver(){
            if($("div:hover").length > 0){
                alert("yes");
            }
        }
    </script>