I am displaying a table. Some cells of this table are filled with content. But there are some cells that are empty. What i want is that all empty cells have a different background color. How can i do that? How can i check if a td is empty?
You can use :empty selector:
Demo:
//You can loop and remove the space charcater from cells
document.querySelectorAll('table tr > td').forEach(c => c.textContent = c.textContent.trim());table, th, td {
border: 1px solid black;
}
table tr > td:empty {
background-color: yellow;
}<table>
<tr>
<th>Month</th>
<th>Savings</th>
</tr>
<tr>
<td>January</td>
<td>$100</td>
</tr>
<tr>
<td>February</td>
<td></td>
</tr>
<tr>
<td>March</td>
<td>$90</td>
</tr>
<tr>
<td>May</td>
<td> </td>
</tr>
</table>You can use js/jquery to check if a cell is empty or not. Based on that you can add a class and give a background-color to the same.
Or if you want a css only approach, you can use :empty selector. But the problem with :empty is that it will not consider a td an empty one if there is just a few space in it. Check the below snippet.
$(document).ready(function () {
$("table td").each(function (index, eachCell) {
if ($(eachCell).html().trim().length === 0) {
$(eachCell).addClass("empty-cell");
}
});
});.empty-cell {
background-color: red;
}
td {
border: 1px solid #ddd;
padding: 5px;
}
td:empty {
background-color: yellow;
}<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<tbody>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr>
<td>1</td>
<td></td>
<td>3</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td> </td>
</tr>
</tbody>
</table>