<style>
#showbox {
width: 150px;
min-height: 50px;
font: 100 14px/1 "微软雅黑";
border: 1px solid #3c8dbc;
display: none;
position: absolute;
top: 0;
left: 0;
background-color: #fff;
padding: 5px;
}
</style>

<table id="example1" role="grid">
<thead style="background-color: #E4E9F0;">
<tr role="row">
<th rowspan="2" style="text-align: center; width: 6%;" class="sorting_disabled " colspan="1"><font style="font-weight:bold;">序号</font></th>
<th rowspan="2" style="text-align: center; width: 10%;" class="sorting_disabled " colspan="1"><font style="font-weight:bold;">名称</font></th>
<th rowspan="2" style="text-align: center; width: 10%;" class="sorting_disabled " colspan="1"><font style="font-weight:bold;">类别</font></th>
<th rowspan="2" style="text-align: center; width: 8%;" class="sorting_disabled" colspan="1"><font style="font-weight:bold;">单位</font></th>
<th rowspan="2" style="text-align: center; width: 26%;" class="sorting_disabled " colspan="1"><font style="font-weight:bold;">成果要求</font></th>
<th colspan="2" style="text-align: center; " rowspan="1"><font style="font-weight:bold;">进展</font></th></tr>
<tr role="row">
<th style="text-align: center; width: 30%;" class="sorting_disabled" rowspan="1" colspan="1"><font style="font-weight:bold;">最新进展</font></th>
<th style="text-align: center; width: 10%;" class="sorting_disabled " rowspan="1" colspan="1"><font style="font-weight:bold;">更新时间</font></th></tr>
</thead>
<tbody>
<tr role="row">
<td>1</td>
<td>阿拉蕾</td>
<td>阿拉蕾</td>
<td>阿拉蕾</td>
<td>阿拉蕾</td>
<td>阿拉蕾</td>
<td></td>
</tr>
<tr role="row">
<td>2</td>
<td>阿拉蕾</td>
<td>阿拉蕾</td>
<td>阿拉蕾</td>
<td>阿拉蕾</td>
<td>阿拉蕾</td>
<td></td>
</tr>
<tr role="row" class="odd">
<td>3</td>
<td>阿拉蕾</td>
<td>阿拉蕾</td>
<td>阿拉蕾,</td>
<td>阿拉蕾</td>
<td></td>
</tr>
</tbody>
</table>
<div id="showbox"></div>

$(function() {
function showBox(obj,box){
var timer = null;
$(obj).on("mouseover", function (e) {
clearTimeout(timer);
var clientX = e.clientX;
var clientY = e.clientY;
var txt = $(this).text();
timer = setTimeout(function () {
console.log(clientX, clientY);
$(box).css("left", clientX).css("top", clientY);
if (txt == "") {
$(box).hide();
} else {
$(box).show();
$(box).html(txt);
}
}, 1000);
});
$(obj).on("mouseout",function(){
clearTimeout(timer);
$(box).hide();
});
}
showBox("#example1 > tbody td","#showbox");
});