Adjust the color of the whole row in an HTML table by changing the background

Question

Adjust the color of the whole row in an HTML table by changing the background

I am struggling with styling my dynamic table that pulls data from an API. I have successfully generated the table and inserted rows using JavaScript.

However, I am facing styling issues. The colors of my table rows are inconsistent (similar to when using the bootstrap table-striped class) and the cells are not uniform in every row.

Some rows have 3 cells, some have 6, some have 4, etc. This inconsistency is causing blank spaces to appear where cells are missing.

Is there a way to color the entire row uniformly? Below is an example of my current code:

.table-striped th {
  height: 45px;
  background-color: #bfff00 !important;
  color: #191919;
}

.table-striped td {
  padding: 8px;
  border: 2px solid #F6F6F6;
  font-weight: bold;
}

.table-striped>tr:nth-child(n+1)>td {
  background-color: #bababa;
}

.table-striped>tr:nth-child(n+2)>td {
  background-color: #e8e7e6;
}

<div>
  <table class="table-striped">
    <tr>
      <th>Header 1</th>
      <th>Header 2</th>
      <th>Header 3</th>
      <th>Header 4</th>
      <th>Header 5</th>
      <th>Header 6</th>
      <th>Header 7</th>
      <th>Header 8</th>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
      <td>Cell 6</td>
      <td>Cell 7</td>
      <td>Cell 8</td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
    </tr>
  </table>
</div>

Check out the jsfiddle link here

html css

Answer 1

Answer №1

Each table row's width is determined by the number of cells it contains.

If you don't have a complete row, add an additional cell and use colspan as needed.

.table-striped th {
  height: 45px;
  background-color: #bfff00 !important;
  color: #191919;
}

.table-striped td {
  padding: 8px;
  border: 2px solid #F6F6F6;
  font-weight: bold;
}

.table-striped tr:nth-child(odd) {
  background-color: #bababa;
}

.table-striped tr:nth-child(even) {
  background-color: #e8e7e6;
}

<div>
  <table class="table-striped">
    <tr>
      <th>Header 1</th>
      <th>Header 2</th>
      <th>Header 3</th>
      <th>Header 4</th>
      <th>Header 5</th>
      <th>Header 6</th>
      <th>Header 7</th>
      <th>Header 8</th>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td colspan="5"></td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
      <td>Cell 6</td>
      <td>Cell 7</td>
      <td>Cell 8</td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
      <td colspan="3"></td>
    </tr>
  </table>
</div>

Note from MDN states that:

Styling applied to the <tr> element affects the cells within the row unless overridden individually on those cells.

Indicating that styles apply to cells, not the entire row itself.

EDIT

Based on your javascript implementation for generating tables, ensure each row has the correct number of cells compared to the th cells in the header. If there are missing cells, insert one with the appropriate colspan value. If this can't be done during generation, adjust afterward using this method:

A sample approach would be:

function addColspan(table) {
  //Assuming max number of cells per row equals the number of th elements
  var maxCells = table.querySelectorAll("th").length;

  //Select all rows excluding the first one
  var rows = table.querySelectorAll("tr:nth-child(n+2)");
  for(var i = 0; i < rows.length; i++){
    //Check current cell count
    var cellCount = rows[i].querySelectorAll("td").length;
    //If any missing cells
    if(cellCount < maxCells) {
      //Add the required cell with proper colspan
      rows[i].innerHTML += "<td colspan='" + (maxCells - cellCount) + "'></td>";
    }
  }
}

//Execute after table creation
addColspan(document.querySelector(".table-striped"));

.table-striped th {
  height: 45px;
  background-color: #bfff00 !important;
  color: #191919;
}

.table-striped td {
  padding: 8px;
  border: 2px solid #F6F6F6;
  font-weight: bold;
}

.table-striped tr:nth-child(odd) {
  background-color: #bababa;
}

.table-striped tr:nth-child(even) {
  background-color: #e8e7e6;
}

<div>
  <table class="table-striped">
    <tr>
      <th>Header 1</th>
      <th>Header 2</th>
      <th>Header 3</th>
      <th>Header 4</th>
      <th>Header 5</th>
      <th>Header 6</th>
      <th>Header 7</th>
      <th>Header 8</th>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>

    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
      <td>Cell 6</td>
      <td>Cell 7</td>
      <td>Cell 8</td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
    </tr>
  </table>
</div>

Answer 2

Each table row's width is determined by the number of cells it contains.

If you don't have a complete row, add an additional cell and use colspan as needed.

.table-striped th {
  height: 45px;
  background-color: #bfff00 !important;
  color: #191919;
}

.table-striped td {
  padding: 8px;
  border: 2px solid #F6F6F6;
  font-weight: bold;
}

.table-striped tr:nth-child(odd) {
  background-color: #bababa;
}

.table-striped tr:nth-child(even) {
  background-color: #e8e7e6;
}

<div>
  <table class="table-striped">
    <tr>
      <th>Header 1</th>
      <th>Header 2</th>
      <th>Header 3</th>
      <th>Header 4</th>
      <th>Header 5</th>
      <th>Header 6</th>
      <th>Header 7</th>
      <th>Header 8</th>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td colspan="5"></td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
      <td>Cell 6</td>
      <td>Cell 7</td>
      <td>Cell 8</td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
      <td colspan="3"></td>
    </tr>
  </table>
</div>

Note from MDN states that:

Styling applied to the <tr> element affects the cells within the row unless overridden individually on those cells.

Indicating that styles apply to cells, not the entire row itself.

EDIT

Based on your javascript implementation for generating tables, ensure each row has the correct number of cells compared to the th cells in the header. If there are missing cells, insert one with the appropriate colspan value. If this can't be done during generation, adjust afterward using this method:

A sample approach would be:

function addColspan(table) {
  //Assuming max number of cells per row equals the number of th elements
  var maxCells = table.querySelectorAll("th").length;

  //Select all rows excluding the first one
  var rows = table.querySelectorAll("tr:nth-child(n+2)");
  for(var i = 0; i < rows.length; i++){
    //Check current cell count
    var cellCount = rows[i].querySelectorAll("td").length;
    //If any missing cells
    if(cellCount < maxCells) {
      //Add the required cell with proper colspan
      rows[i].innerHTML += "<td colspan='" + (maxCells - cellCount) + "'></td>";
    }
  }
}

//Execute after table creation
addColspan(document.querySelector(".table-striped"));

.table-striped th {
  height: 45px;
  background-color: #bfff00 !important;
  color: #191919;
}

.table-striped td {
  padding: 8px;
  border: 2px solid #F6F6F6;
  font-weight: bold;
}

.table-striped tr:nth-child(odd) {
  background-color: #bababa;
}

.table-striped tr:nth-child(even) {
  background-color: #e8e7e6;
}

<div>
  <table class="table-striped">
    <tr>
      <th>Header 1</th>
      <th>Header 2</th>
      <th>Header 3</th>
      <th>Header 4</th>
      <th>Header 5</th>
      <th>Header 6</th>
      <th>Header 7</th>
      <th>Header 8</th>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>

    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
      <td>Cell 6</td>
      <td>Cell 7</td>
      <td>Cell 8</td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
    </tr>
  </table>
</div>

Answer 3

Answer №2

You have the option to utilize the even and odd properties in CSS. Take a look at this example:

.table-striped th {
  height: 45px;
  background-color: #bfff00 !important;
  color: #191919;
}

.table-striped td {
  padding: 8px;
  border: 2px solid #F6F6F6;
  font-weight: bold;
}

.table-striped tr:nth-child(odd) td {
  background-color: #bababa;
}

.table-striped tr:nth-child(even) td {
  background-color: #e8e7e6;
}

<div>
  <table class="table-striped">
    <tr>
      <th>Header 1</th>
      <th>Header 2</th>
      <th>Header 3</th>
      <th>Header 4</th>
      <th>Header 5</th>
      <th>Header 6</th>
      <th>Header 7</th>
      <th>Header 8</th>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
      <td>Cell 6</td>
      <td>Cell 7</td>
      <td>Cell 8</td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
    </tr>
  </table>
</div>

Following a comment, here is an updated version of the answer. To ensure complete row highlighting, you must include at least empty <td></td>.

.table-striped th {
  height: 45px;
  background-color: #bfff00 !important;
  color: #191919;
}

.table-striped td {
  padding: 8px;
  border: 2px solid #F6F6F6;
  font-weight: bold;
}

.table-striped tr:nth-child(odd) td {
  background-color: #bababa;
}

.table-striped tr:nth-child(even) td {
  background-color: #e8e7e6;
}

<div>
  <table class="table-striped">
    <tr>
      <th>Header 1</th>
      <th>Header 2</th>
      <th>Header 3</th>
      <th>Header 4</th>
      <th>Header 5</th>
      <th>Header 6</th>
      <th>Header 7</th>
      <th>Header 8</th>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
      <td>Cell 6</td>
      <td>Cell 7</td>
      <td>Cell 8</td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
      <td></td>
      <td></td>
      <td></td>
    </tr>
  </table>
</div>

Answer 4

You have the option to utilize the even and odd properties in CSS. Take a look at this example:

.table-striped th {
  height: 45px;
  background-color: #bfff00 !important;
  color: #191919;
}

.table-striped td {
  padding: 8px;
  border: 2px solid #F6F6F6;
  font-weight: bold;
}

.table-striped tr:nth-child(odd) td {
  background-color: #bababa;
}

.table-striped tr:nth-child(even) td {
  background-color: #e8e7e6;
}

<div>
  <table class="table-striped">
    <tr>
      <th>Header 1</th>
      <th>Header 2</th>
      <th>Header 3</th>
      <th>Header 4</th>
      <th>Header 5</th>
      <th>Header 6</th>
      <th>Header 7</th>
      <th>Header 8</th>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
      <td>Cell 6</td>
      <td>Cell 7</td>
      <td>Cell 8</td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
    </tr>
  </table>
</div>

Following a comment, here is an updated version of the answer. To ensure complete row highlighting, you must include at least empty <td></td>.

.table-striped th {
  height: 45px;
  background-color: #bfff00 !important;
  color: #191919;
}

.table-striped td {
  padding: 8px;
  border: 2px solid #F6F6F6;
  font-weight: bold;
}

.table-striped tr:nth-child(odd) td {
  background-color: #bababa;
}

.table-striped tr:nth-child(even) td {
  background-color: #e8e7e6;
}

<div>
  <table class="table-striped">
    <tr>
      <th>Header 1</th>
      <th>Header 2</th>
      <th>Header 3</th>
      <th>Header 4</th>
      <th>Header 5</th>
      <th>Header 6</th>
      <th>Header 7</th>
      <th>Header 8</th>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
      <td>Cell 6</td>
      <td>Cell 7</td>
      <td>Cell 8</td>
    </tr>
    <tr>
      <td>Cell 1</td>
      <td>Cell 2</td>
      <td>Cell 3</td>
      <td>Cell 4</td>
      <td>Cell 5</td>
      <td></td>
      <td></td>
      <td></td>
    </tr>
  </table>
</div>

Adjust the color of the whole row in an HTML table by changing the background

Answer №1

Answer №2

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