table固定表头和列 css实现表格固定表头

Hello，大家好，我是站长鹏仔，本次鹏仔开发的项目中，实现出功能如图所示，固定表格的头部和左侧，在超出时滚动条滚动悬浮，之前给大家写过一次表格表头固定，是用占位的方式（https://www.sharedbk.com/post/178.html），太麻烦了，本次给大家分享一个更简单的方法。

本次主要用到的css属性是粘性定位 position: sticky; 这个属性可以理解为 position: relative; 正常显示时没有任何变化，但是当页面滚动时，他就相当于 fixed 一样固定到某个位置,一般常用于标题、操作栏、表格表头等。

【PS】 需要配合 top、right、bottom、left 使用才会出现固定效果。

下方鹏仔简单给大家写的案列，可自行复制尝试。

<style>
    body,div,p,ul,ol,li,dl,dt,dd,table,tr,td,form,hr,h1,h2,h3,h4,h5,h6,fieldset,img,input {
        margin: 0;
        padding: 0;
    }
    body,html {
        width: 100%;
        min-height: 100%;
    }

    .table-layer{
        width: 600px;
        max-height: 200px;
        overflow: scroll;
        background: rgba(0,0,0,.1);
    }
    table thead tr{
        position: sticky;
        top: 0;
        z-index: 10;
    }
    .table-name{
        background: #F5F5F5;
        position: sticky;
        left: 0px;
        z-index: 11;
    }
    .table-name div{
        width: 128px;
        padding: 12px 8px;
        box-sizing: border-box;
        text-align: center;
    }
    .table-con{
        min-width: 240px;
        padding: 12px 8px;
        box-sizing: border-box;
    }
</style>

<div class="table-layer">
    <table border="1" cellspacing="0" cellpadding="0">
        <thead>
            <tr style="background: #F5F5F5; top: 0;z-index: 12;">
                <td class="table-name">
                    <div>姓名</div>
                </td>
                <td class="table-con">
                    <div>姓名</div>
                </td>
                <td class="table-con">
                    <div>姓名</div>
                </td>
                <td class="table-con">
                    <div>姓名</div>
                </td>
                <td class="table-con">
                    <div>姓名</div>
                </td>
                <td class="table-con">
                    <div>姓名</div>
                </td>
            </tr>
        </thead>
        <tr>
            <td class="table-name">
                <div>姓名</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
        </tr>
        <tr>
            <td class="table-name">
                <div>姓名</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
        </tr>
        <tr>
            <td class="table-name">
                <div>姓名</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
        </tr>
        <tr>
            <td class="table-name">
                <div>姓名</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
        </tr>
        <tr>
            <td class="table-name">
                <div>姓名</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
            <td class="table-con">
                <div>鹏仔</div>
            </td>
        </tr>
    </table>
</div>