Utilizing the ternary operator in HTML for dynamically determining the class to apply

Is there a way to dynamically decide on a CSS class in HTML using a ternary operator? I have tried the code below, but it seems like the condition is not being evaluated correctly. The class written in the true part of the condition always gets applied. How can I apply a specific class based on a certain condition? Any alternative approach would be greatly appreciated.

<td class="col-md-6"><span class="form-control-static cdr-details-td" />
  <span class="(('1' === '-1') ? version-modal-header : failure)">{{cdr.causeCode}}</span> 
</td>

CSS for the same:

.version-modal-header {
  background-color: #000000;
}
.failure {
  color: #ff0000;
  font-weight: bold;
}

Answer №1

To improve your code, consider using the ng-class directive

ng-class="{'version-modal-header': condition, 'failure': !condition}"

If you prefer, you can also utilize a ternary operator

ng-class="condition ? 'version-modal-header' : 'failure'"

Answer №2

For a live demonstration, make sure to view the example provided here: Example

Utilize ng-class for styling purposes

 ng-class="{true: 'version-modal-header', false: 'failure'}[changeClass]" 

Your conditions can be written within [changeClass]

Answer №3

If you are searching for a way to implement the ternary operator in the style attribute within .NET view pages, the solution below is exactly what you need:

style="background-color: @(Model.IsVisible ? "#fde0e0;" : "#DFF0D8;")"

Answer №4

The use of a ternary operation in your software may not function properly when dealing with class attributes, especially within HTML DOM elements. One possible solution is to utilize AngularJS, which offers a convenient built-in directive called ng-class. By utilizing this directive, one can establish certain conditions that dictate the application of specific class styles.

Take a look at the example below:

<td class="col-md-6"><span class="form-control-static cdr-details-td" />
    <span ng-class="{'version-modal-header': '1' === '-1', 'failure': '1' === '1'}">{{cdr.causeCode}}</span>
</td>

To see a demonstration, click on this link.

Answer №5

If you're looking to dynamically apply a CSS class, use the ng-class directive. Avoid using interpolation or binding {{}} directly for applying CSS classes as it may not work consistently across different browsers. With ng-class, all you need to do is provide an object with class names as keys and Boolean conditions as values. Any class with a true value will be applied dynamically.

<td class="col-md-6"><span class="form-control-static cdr-details-td" />
  <span ng-class="{'version-modal-header': ('1' === '-1'), 'failure': ('1' !== '-1')}">{{cdr.causeCode}}</span> 
</td>

Learn more about ngClass in AngularJS documentation

Answer №6

Utilize it for dynamically displaying and concealing content.

{{condition ? 'true value' : 'false value'}}

Answer №7

This is the approach that proved effective in my situation.

<div style={{borderBottom: isLoggedIn ? '6px solid green' : "None"}}></div>

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