How can you create a chessboard without using classes or IDs in CSS?-CSS Tutorial-php.cn

How can you create a chessboard without using classes or IDs in CSS?

Barbara Streisand

Release： 2024-10-31 11:54:30

Original

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How can you create a chessboard without using classes or IDs in CSS?

Pure CSS Chessboard: Exploring Divs and the Avoidance of Classes and Ids

Attempting to create a chessboard solely using CSS and avoiding the use of classes or ids might seem like a daunting task. However, it's a task that has piqued the curiosity of many, including programmers assigned with the challenge.

The provided HTML layout consists of numerous nested

elements, presenting a unique challenge for styling the chessboard pattern. Traditional approaches utilizing nth-child() selectors have proven unsuccessful.

Rethinking the Approach

Instead of directly targeting specific individual elements, we can leverage a different approach that involves altering the appearance of alternating elements within a specific group. This is where the power of the odd and even pseudo-classes truly shines.

For example, let's consider a table:

<code class="html"><table>
  <tr>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
  <tr>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
  <tr>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
  <tr>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
  <tr>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
  <tr>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
  <tr>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
  <tr>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
</table></code>

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Using CSS, we can target alternating rows and columns within this table:

<code class="css">table tr:nth-child(odd) td:nth-child(even) {
  background: #000;
}

table tr:nth-child(even) td:nth-child(odd) {
  background: #000;
}</code>

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This CSS rule sets the background color of specific cells based on their position within the rows and columns. By doing so, a checkerboard pattern is created that effectively resembles a chessboard.

Elegant and Efficient

This approach offers a clean and efficient way to create a chessboard using pure CSS, staying true to the constraints of avoiding classes and ids. It showcases the versatility of CSS selectors and their ability to target elements based on their position within a given structure.

So, while it may have seemed like an unconventional approach initially, exploiting the power of the odd and even pseudo-classes provided the key to unlocking the solution.

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