html table cell width for different rows [duplicate]_问答_开发者

This question already has answers here: Closed 11 years ago.

Possible Duplicate:
table cell width issue

I have a table set up as

<html>
 <body bgcolor="#14B3D9">
<table width="100%" border="1" bgcolor="#ffffff">
    <tr>
        <td width="25%">25</td>
        <td width="50%">50</td>
        <td width="25%">25</td>
    </tr>
    <tr>
        <td width="50%">50</td>
        <td width="30%">30</td>
        <td width="20%">20</td>
    </tr>
</table>
</body>
</html>

How do i 开发者_JS百科get the 2 rows to have different cell width?

One solution would be to divide your table into 20 columns of 5% width each, then use colspan on each real column to get the desired width, like this:

<html>
<body bgcolor="#14B3D9">
<table width="100%" border="1" bgcolor="#ffffff">
    <colgroup>
        <col width="5%"><col width="5%">
        <col width="5%"><col width="5%">
        <col width="5%"><col width="5%">
        <col width="5%"><col width="5%">
        <col width="5%"><col width="5%">
        <col width="5%"><col width="5%">
        <col width="5%"><col width="5%">
        <col width="5%"><col width="5%">
        <col width="5%"><col width="5%">
        <col width="5%"><col width="5%">
    </colgroup>
    <tr>
        <td colspan=5>25</td>
        <td colspan=10>50</td>
        <td colspan=5>25</td>
    </tr>
    <tr>
        <td colspan=10>50</td>
        <td colspan=6>30</td>
        <td colspan=4>20</td>
    </tr>
</table>
</body>
</html>

JSFIDDLE

As far as i know that is impossible and that makes sense since what you are trying to do is against the idea of tabular data presentation. You could however put the data in multiple tables and remove any padding and margins in between them to achieve the same result, at least visibly. Something along the lines of:

<html>

<head>
  <style type="text/css">
    .mytable {
      border-collapse: collapse;
      width: 100%;
      background-color: white;
    }
    .mytable-head {
      border: 1px solid black;
      margin-bottom: 0;
      padding-bottom: 0;
    }
    .mytable-head td {
      border: 1px solid black;
    }
    .mytable-body {
      border: 1px solid black;
      border-top: 0;
      margin-top: 0;
      padding-top: 0;
      margin-bottom: 0;
      padding-bottom: 0;
    }
    .mytable-body td {
      border: 1px solid black;
      border-top: 0;
    }
    .mytable-footer {
      border: 1px solid black;
      border-top: 0;
      margin-top: 0;
      padding-top: 0;
    }
    .mytable-footer td {
      border: 1px solid black;
      border-top: 0;
    }
  </style>
</head>

<body>
  <table class="mytable mytable-head">
    <tr>
      <td width="25%">25</td>
      <td width="50%">50</td>
      <td width="25%">25</td>
    </tr>
  </table>
  <table class="mytable mytable-body">
    <tr>
      <td width="50%">50</td>
      <td width="30%">30</td>
      <td width="20%">20</td>
    </tr>
  </table>
  <table class="mytable mytable-body">
    <tr>
      <td width="16%">16</td>
      <td width="68%">68</td>
      <td width="16%">16</td>
    </tr>
  </table>
  <table class="mytable mytable-footer">
    <tr>
      <td width="20%">20</td>
      <td width="30%">30</td>
      <td width="50%">50</td>
    </tr>
  </table>
</body>

</html>

JSFIDDLE

I don't know your requirements but i'm sure there's a more elegant solution.

You can't have cells of arbitrarily different widths, this is generally a standard behaviour of tables from any space, e.g. Excel, otherwise it's no longer a table but just a list of text.

You can however have cells span multiple columns, such as:

<table>
    <tr>
        <td>25</td>
        <td>50</td>
        <td>25</td>
    </tr>
    <tr>
        <td colspan="2">75</td>
        <td>20</td>
    </tr>
</table>

As an aside, you should avoid using style attributes like border and bgcolor and prefer CSS for those.

with 5 columns and colspan, this is possible (click here) (but doesn't make much sense to me):

<table width="100%" border="1" bgcolor="#ffffff">
    <colgroup>
        <col width="25%">
        <col width="25%">
        <col width="25%">
        <col width="5%">
        <col width="20%">
    </colgroup>
    <tr>
        <td>25</td>
        <td colspan="2">50</td>
        <td colspan="2">25</td>     
    </tr>
    <tr>
        <td colspan="2">50</td>
        <td colspan="2">30</td>
        <td>20</td>
    </tr>
</table>