Vue implements table merging and splitting example code

In Vue applications, tables are a very common component. Sometimes we need to merge or split the tables to meet specific needs. In this article, we will explain how to merge and split tables in Vue.

How to merge tables

Table merging refers to combining cells with multiple rows or columns into one cell to better display the data. In Vue, we can userowspanandcolspanProperties to implement table merging.

The following is a userowspanAn example of properties implementing table merging:

<template>
  <table>
    <thead>
      <tr>
        <th>Name</th>
        <th>Chinese</th>
        <th>math</th>
        <th>English</th>
        <th>Total points</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td rowspan="2">Xiao Ming</td>
        <td>80</td>
        <td>90</td>
        <td>70</td>
        <td rowspan="2">240</td>
      </tr>
      <tr>
        <td>70</td>
        <td>80</td>
        <td>90</td>
      </tr>
      <tr>
        <td>Xiaohong</td>
        <td>90</td>
        <td>80</td>
        <td>70</td>
        <td>240</td>
      </tr>
    </tbody>
  </table>
</template>

In the example above, we userowspanThe property combines the cells in the first column into one cell. In this way, the first column is displayed only once, and the first column cells of the second row are merged into the cells of the first row.

The following is a usecolspanAn example of properties implementing table merging:

<template>
  <table>
    <thead>
      <tr>
        <th>Name</th>
        <th colspan="3">score</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>Xiao Ming</td>
        <td>80</td>
        <td>90</td>
        <td>70</td>
      </tr>
      <tr>
        <td>Xiaohong</td>
        <td>90</td>
        <td>80</td>
        <td>70</td>
      </tr>
    </tbody>
    <tfoot>
      <tr>
        <td>Average score</td>
        <td colspan="3">80</td>
      </tr>
    </tfoot>
  </table>
</template>

In the example above, we use the colspan attribute to merge cells from the second column to the fourth column into one cell. In this way, the second column to the fourth column is displayed only once, and the second column to fourth column cells of the first and second rows are merged into the second column cells of the first and second rows.

How to split the table

Table splitting refers to splitting a cell into multiple cells to better display the data. In Vue, we can use rowspan and colspan properties to implement table splitting.

Here is an example of using the rowspan property to implement table splitting:

<template>
  <table>
    <tbody>
      <tr>
        <td rowspan="2">Xiao Ming</td>
        <td>Chinese</td>
        <td>80</td>
      </tr>
      <tr>
        <td>math</td>
        <td>90</td>
      </tr>
      <tr>
        <td>Xiaohong</td>
        <td>Chinese</td>
        <td>90</td>
      </tr>
    </tbody>
  </table>
</template>

In the example above, we userowspanThe property splits the first column cell of the first row into two cells. In this way, the first column cell of the first row will be split into two cells, the first cell contains the name of "Xiao Ming", and the second cell contains the Chinese and math grades of "Xiao Ming".

The following is a usecolspanAn example of properties implementing table splitting:

<template>
  <table>
    <tbody>
      <tr>
        <td>Xiao Ming</td>
        <td>Chinese</td>
        <td colspan="2">80</td>
      </tr>
      <tr>
        <td></td>
        <td>math</td>
        <td>90</td>
        <td></td>
      </tr>
      <tr>
        <td>Xiaohong</td>
        <td>Chinese</td>
        <td>90</td>
        <td></td>
      </tr>
    </tbody>
  </table>
</template>

In the example above, we use the colspan property to split the second column cell into two cells. In this way, the second column cell of the first row will be split into two cells, the first cell contains the Chinese scores of "Xiao Ming", and the second cell contains the math scores of "Xiao Ming". Similarly, the second column cell of the third row is also split into two cells, the first cell contains the Chinese score of "Little Red", and the second cell is empty.

Things to note

When merging and splitting tables, you need to pay attention to the following points:

The rowspan and colspan attributes can only be used for <td> and <th> elements, and cannot be used for other elements.

When using rowspan and colspan properties, it is necessary to ensure that the number of cells after merge or split is equal to the number of cells in other rows or columns.

When using rowspan and colspan properties, you need to pay attention to the order of merging cells. For example, when using the rowspan property, you should first merge the upper row cells and then merge the lower row cells.

When using rowspan and colspan properties, you need to pay attention to the layout of the table. Merging or splitting cells may change the layout of the table, affecting the readability and aesthetics of the table.

in conclusion

Table merging and splitting in Vue is a very useful skill that can help us better present data. By using rowspan and colspan properties, we can easily implement merge and split tables. Of course, when using these properties, we need to pay attention to some details and precautions to ensure the readability and aesthetics of the table.

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