css怎么让表格某一行固定不动

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css设置表格某一行固定不动的方法：1、使用css定位th，并根据父级滚动条scrolltop的偏移量获取值，然后用js把偏移量赋值到th的定位top上；2、使用jq插件设置表格某一行固定不动。

css如何让表格某一行固定不动？

css如何让表格某一行固定不动？下面本篇文章给大家介绍一下使用CSS设置表格第一行（表头）固定不动的方法。

一、使用css + js来实现表头固定

使用css定位th 根据父级滚动条scrolltop的偏移量获取值，在用js把偏移量赋值到th的定位top上。就做到了表头固定。（此方法需要固定高度）

推荐：《css视频教程》

项目demo

css样式部分 主要是出现滚动条和定位th还有固定高度。

<style>
.table-responsive {
    overflow: auto !important;
}
.table-th-css {
    background: #EFEFF4 !important;
    position: relative !important;
    text-align: center;
    top: 0;
}
.section-scroll{
height:417px;
}
</style>

html部分 自己做肯定内容超级多 demo我就不复制那么多内容了。

<div class="table-responsive section-scroll">
<table class="table table-bordered">
<thead class="table-header">
<tr>
                        <th class="table-th-css">
                            <div>部门</div>
                        </th>
                        <th class="table-th-css">
                            <div>用户名称</div>
                        </th>
                        <th class="text-center table-th-css">
                            <div>1月</div>
                        </th>
                        <th class="text-center table-th-css">
                            <div>2月</div>
                        </th>
                        <th class="text-center table-th-css">
                            <div>3月</div>
                        </th>
                        <th class="text-center table-th-css">
                            <div>4月</div>
                        </th>
                        <th class="text-center table-th-css">
                            <div>5月</div>
                        </th>
                        <th class="text-center table-th-css">
                            <div>6月</div>
                        </th>
                        <th class="text-center table-th-css">
                            <div>7月</div>
                        </th>
                        <th class="text-center table-th-css">
                            <div>8月</div>
                        </th>
                        <th class="text-center table-th-css">
                            <div>9月</div>
                        </th>
                        <th class="text-center table-th-css">
                            <div>10月</div>
                        </th>
                        <th class="text-center table-th-css">
                            <div>11月</div>
                        </th>
                        <th class="text-center table-th-css">
                            <div>12月</div>
                        </th>
                        <th class="text-center table-th-css">
                            <div>合计</div>
                        </th>
</tr>
</thead>
<tbody >
<tr class="text-center" >
                        <td >
                            西门庆
                        </td>
                        <td class="table-textWidth">
                            西门庆
                        </td>
                        <td>
                            西门庆
                        </td>
                        <td>
                           西门庆
                        </td>
                        <td>
                            西门庆
                        </td>
                        <td>
                           西门庆
                        </td>
                        <td>
                            西门庆
                        </td>
                        <td>
                            西门庆
                        </td>
                        <td>
                           西门庆
                        </td>
                        <td>
                            西门庆
                        </td>
                        <td>
                           西门庆
                        </td>
                        <td>
                           西门庆
                        </td>
                        <td>
                            西门庆
                        </td>
                        <td>
                            西门庆
                        </td>
                        <td>
                            西门庆
                        </td>
</tr>
</tbody>
</table>
</div>

js内容 使用jq的on事件，监听滚动根据我自己项目的样式修改了下自己的样式。大家使用可自行调整。

var tableCont = $('.section-scroll tr th'); //获取th
var tableCont_child = $('.section-scroll tr th div'); //获取th下边的div
var tableScroll = $('.section-scroll'); //获取滚动条同级的class
        function scrollHandle() {
            var scrollTop = tableScroll.scrollTop();
            // 当滚动距离大于0时设置top及相应的样式
            if (scrollTop > 0) {
                tableCont.css({
                    "top": scrollTop + 'px',
                    "marginTop": "-1px",
                    "padding": 0
                });
                tableCont_child.css({
                    "borderTop": "1px solid gainsboro",
                    "borderBottom": "1px solid gainsboro",
                    "marginTop": "-1px",
                    "padding": "8px"
                })
            } else {
            // 当滚动距离小于0时设置top及相应的样式
                tableCont.css({
                    "top": scrollTop + 'px',
                    "marginTop": "0",
                });
                tableCont_child.css({
                    "border": "none",
                    "marginTop": 0,
                    "marginBottom": 0,
                })
            }
        }
tableScroll.on('scroll', scrollHandle);

这样第一种方式的表头固定就完成了。在浏览器上看着基本没瑕疵，但是我用mui使用这种方法，可能是app的滚动有回弹所以效果会显得有点卡顿。本人菜鸡不喜勿喷（欢迎回复…）。

二、使用jq插件 （这是去年在公司让做表头固定找的jq插件 由于技术水平问题我在angular 中使用了jq 反正最后解决了 哈哈）

由于是去年简单草率的做了个demo 截了个图 主要使用了 jquery.fixedheadertable.min.js 这个插件 上图上demo （不喜勿喷，本人小白）

插件地址：http://www.jq22.com/jquery-info10153

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