ng-class in Angular seems to be functioning properly on <td> elements, but is not

When using this HTML inside an ng-repeat, there is a difference in behavior:

This part works fine:

<tr>
    <td ng-class="info.lastInMonth">{{ info.date_formatted }}</td>
    ...

But this section does not work as expected:

<tr ng-class="info.lastInMonth">
    <td>{{ info.date_formatted }}</td>
    ...

It seems that the same expression works when applied to the td element, but not when applied to the tr element. Any insights on why this might be happening?

Answer №1

When it comes to styling in HTML, if the styling is specific to an element like td, it is recommended to apply the styles directly to that element rather than a parent element like tr. This is because the styles applied to td will take precedence over those applied to tr.

Take for example the following css class:

.test{
    background: #ccddee;
    padding: 5px;
    border: solid #5a5a5a 5px;
}

If you apply this class to a tr element:

<table>
        <tr class="test"><td>cell content</td></tr>
    </table>

You may notice that the border and padding are not applied as expected: https://i.sstatic.net/LzKL9.jpg

However, applying the same class to a td element:

<table>
  <tr><td  class="test">cell content</td></tr>
</table>

You will see that the borders and padding are now correctly applied: https://i.sstatic.net/TPEFC.jpg

Answer №2

My code successfully implements this solution. It's important to carefully compare and identify the differences between the two implementations. It's worth noting that any discrepancies may be due to changes in the Angular version.

var meadow = angular.module('meadow', []);
meadow = meadow.controller("abc", function($scope) {
  $scope.info = {
    lastInMonth: "a",
    date_formatted: "b"
  }
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="meadow" ng-controller="abc">
  <table>
    <tr ng-class="info.lastInMonth">
      <td>{{ info.date_formatted }}</td>
    </tr>
  </table>

</div>

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