如何在html表格上显示滚动条?

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我正在写一个页面,我需要一个html表来维持一个设置的大小。我需要表格顶部的标题始终保持在那里,但是我也需要滚动表格的主体来滚动,无论有多少行添加到表格中。

我试过这样做,但没有滚动条出现:

    <table border=1 id="qandatbl" align="center">
    <tr>
    <th class="col1">Question No</th>
    <th class="col2">Option Type</th>
    <th class="col1">Duration</th>
    </tr>

   <tbody>
    <tr>
    <td class='qid'></td>
    <td class="options"></td>
    <td class="duration"></td>
    </tr>
    </tbody>
</table>

CSS:

tbody { 
    height:80em;  
    overflow:scroll;
                }
提问于
用户回答回答于

这个想法是包装<table>在一个非静态位置<div>,它有一个overflow:autoCSS属性。然后将元素放置在<thead>绝对位置。

HTML

<div id="table-wrapper">
  <div id="table-scroll">
    <table>
        <thead>
            <tr>
                <th><span class="text">A</span></th>
                <th><span class="text">B</span></th>
                <th><span class="text">C</span></th>
            </tr>
        </thead>
        <tbody>
          <tr> <td>1, 0</td> <td>2, 0</td> <td>3, 0</td> </tr>
          <tr> <td>1, 1</td> <td>2, 1</td> <td>3, 1</td> </tr>
          <tr> <td>1, 2</td> <td>2, 2</td> <td>3, 2</td> </tr>
          <tr> <td>1, 3</td> <td>2, 3</td> <td>3, 3</td> </tr>
          <tr> <td>1, 4</td> <td>2, 4</td> <td>3, 4</td> </tr>
          <tr> <td>1, 5</td> <td>2, 5</td> <td>3, 5</td> </tr>
          <tr> <td>1, 6</td> <td>2, 6</td> <td>3, 6</td> </tr>
          <tr> <td>1, 7</td> <td>2, 7</td> <td>3, 7</td> </tr>
          <tr> <td>1, 8</td> <td>2, 8</td> <td>3, 8</td> </tr>
          <tr> <td>1, 9</td> <td>2, 9</td> <td>3, 9</td> </tr>
          <tr> <td>1, 10</td> <td>2, 10</td> <td>3, 10</td> </tr>
          <!-- etc... -->
          <tr> <td>1, 99</td> <td>2, 99</td> <td>3, 99</td> </tr>
        </tbody>
    </table>
  </div>
</div>

CSS

#table-wrapper {
  position:relative;
}
#table-scroll {
  height:150px;
  overflow:auto;  
  margin-top:20px;
}
#table-wrapper table {
  width:100%;

}
#table-wrapper table * {
  background:yellow;
  color:black;
}
#table-wrapper table thead th .text {
  position:absolute;   
  top:-20px;
  z-index:2;
  height:20px;
  width:35%;
  border:1px solid red;
}
用户回答回答于

接受的答案提供了一个很好的起点,但是如果调整框架大小,更改列宽度,甚至更改表格数据,标题将以各种方式混乱。我见过的其他每个例子都有类似的问题,或者对表格的布局施加了一些严重的限制。

颜色和边界将不得不改变,以使其与参考相同。有关如何进行这些更改的信息在CSS注释中提供。

代码如下:

/*the following html and body rule sets are required only if using a % width or height*/
/*html {
width: 100%;
height: 100%;
}*/
body {
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0 20px 0 20px;
  text-align: center;
  background: white;
}
.scrollingtable {
  box-sizing: border-box;
  display: inline-block;
  vertical-align: middle;
  overflow: hidden;
  width: auto; /*if you want a fixed width, set it here, else set to auto*/
  min-width: 0/*100%*/; /*if you want a % width, set it here, else set to 0*/
  height: 188px/*100%*/; /*set table height here; can be fixed value or %*/
  min-height: 0/*104px*/; /*if using % height, make this large enough to fit scrollbar arrows + caption + thead*/
  font-family: Verdana, Tahoma, sans-serif;
  font-size: 15px;
  line-height: 20px;
  padding: 20px 0 20px 0; /*need enough padding to make room for caption*/
  text-align: left;
}
.scrollingtable * {box-sizing: border-box;}
.scrollingtable > div {
  position: relative;
  border-top: 1px solid black;
  height: 100%;
  padding-top: 20px; /*this determines column header height*/
}
.scrollingtable > div:before {
  top: 0;
  background: cornflowerblue; /*header row background color*/
}
.scrollingtable > div:before,
.scrollingtable > div > div:after {
  content: "";
  position: absolute;
  z-index: -1;
  width: 100%;
  height: 100%;
  left: 0;
}
.scrollingtable > div > div {
  min-height: 0/*43px*/; /*if using % height, make this large enough to fit scrollbar arrows*/
  max-height: 100%;
  overflow: scroll/*auto*/; /*set to auto if using fixed or % width; else scroll*/
  overflow-x: hidden;
  border: 1px solid black; /*border around table body*/
}
.scrollingtable > div > div:after {background: white;} /*match page background color*/
.scrollingtable > div > div > table {
  width: 100%;
  border-spacing: 0;
  margin-top: -20px; /*inverse of column header height*/
  /*margin-right: 17px;*/ /*uncomment if using % width*/
}
.scrollingtable > div > div > table > caption {
  position: absolute;
  top: -20px; /*inverse of caption height*/
  margin-top: -1px; /*inverse of border-width*/
  width: 100%;
  font-weight: bold;
  text-align: center;
}
.scrollingtable > div > div > table > * > tr > * {padding: 0;}
.scrollingtable > div > div > table > thead {
  vertical-align: bottom;
  white-space: nowrap;
  text-align: center;
}
.scrollingtable > div > div > table > thead > tr > * > div {
  display: inline-block;
  padding: 0 6px 0 6px; /*header cell padding*/
}
.scrollingtable > div > div > table > thead > tr > :first-child:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 20px; /*match column header height*/
  border-left: 1px solid black; /*leftmost header border*/
}
.scrollingtable > div > div > table > thead > tr > * > div[label]:before,
.scrollingtable > div > div > table > thead > tr > * > div > div:first-child,
.scrollingtable > div > div > table > thead > tr > * + :before {
  position: absolute;
  top: 0;
  white-space: pre-wrap;
  color: white; /*header row font color*/
}
.scrollingtable > div > div > table > thead > tr > * > div[label]:before,
.scrollingtable > div > div > table > thead > tr > * > div[label]:after {content: attr(label);}
.scrollingtable > div > div > table > thead > tr > * + :before {
  content: "";
  display: block;
  min-height: 20px; /*match column header height*/
  padding-top: 1px;
  border-left: 1px solid black; /*borders between header cells*/
}
.scrollingtable .scrollbarhead {float: right;}
.scrollingtable .scrollbarhead:before {
  position: absolute;
  width: 100px;
  top: -1px; /*inverse border-width*/
  background: white; /*match page background color*/
}
.scrollingtable > div > div > table > tbody > tr:after {
  content: "";
  display: table-cell;
  position: relative;
  padding: 0;
  border-top: 1px solid black;
  top: -1px; /*inverse of border width*/
}
.scrollingtable > div > div > table > tbody {vertical-align: top;}
.scrollingtable > div > div > table > tbody > tr {background: white;}
.scrollingtable > div > div > table > tbody > tr > * {
  border-bottom: 1px solid black;
  padding: 0 6px 0 6px;
  height: 20px; /*match column header height*/
}
.scrollingtable > div > div > table > tbody:last-of-type > tr:last-child > * {border-bottom: none;}
.scrollingtable > div > div > table > tbody > tr:nth-child(even) {background: gainsboro;} /*alternate row color*/
.scrollingtable > div > div > table > tbody > tr > * + * {border-left: 1px solid black;} /*borders between body cells*/

<div class="scrollingtable">
  <div>
    <div>
      <table>
        <caption>Top Caption</caption>
        <thead>
          <tr>
            <th><div label="Column 1"></div></th>
            <th><div label="Column 2"></div></th>
            <th><div label="Column 3"></div></th>
            <th>
              <!--more versatile way of doing column label; requires 2 identical copies of label-->
              <div><div>Column 4</div><div>Column 4</div></div>
            </th>
            <th class="scrollbarhead"/> <!--ALWAYS ADD THIS EXTRA CELL AT END OF HEADER ROW-->
          </tr>
        </thead>
        <tbody>
          <tr><td>Lorem ipsum</td><td>Dolor</td><td>Sit</td><td>Amet consectetur</td></tr>
          <tr><td>Lorem ipsum</td><td>Dolor</td><td>Sit</td><td>Amet consectetur</td></tr>
          <tr><td>Lorem ipsum</td><td>Dolor</td><td>Sit</td><td>Amet consectetur</td></tr>
          <tr><td>Lorem ipsum</td><td>Dolor</td><td>Sit</td><td>Amet consectetur</td></tr>
          <tr><td>Lorem ipsum</td><td>Dolor</td><td>Sit</td><td>Amet consectetur</td></tr>
          <tr><td>Lorem ipsum</td><td>Dolor</td><td>Sit</td><td>Amet consectetur</td></tr>
          <tr><td>Lorem ipsum</td><td>Dolor</td><td>Sit</td><td>Amet consectetur</td></tr>
          <tr><td>Lorem ipsum</td><td>Dolor</td><td>Sit</td><td>Amet consectetur</td></tr>
          <tr><td>Lorem ipsum</td><td>Dolor</td><td>Sit</td><td>Amet consectetur</td></tr>
          <tr><td>Lorem ipsum</td><td>Dolor</td><td>Sit</td><td>Amet consectetur</td></tr>
          <tr><td>Lorem ipsum</td><td>Dolor</td><td>Sit</td><td>Amet consectetur</td></tr>
          <tr><td>Lorem ipsum</td><td>Dolor</td><td>Sit</td><td>Amet consectetur</td></tr>
        </tbody>
      </table>
    </div>
    Faux bottom caption
  </div>
</div>

<!--[if lte IE 9]><style>.scrollingtable > div > div > table {margin-right: 17px;}</style><![endif]-->

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