Using TypeScript and Angular to modify CSS properties

I'm trying to figure out how to change the z-index CSS attribute of the <footer> element when the <select> is open in TypeScript (Angular 10). The current z-index value for the footer is set to 9998;, but I want it to be 0;. This adjustment is necessary because when the select dropdown is opened, the options appear under the footer and make it difficult for the user to make a selection.

$('.test').on('click', () => {
  $('footer').css('z-index', '0');
})
<select
  class="test"
  placeholder="select an option"
  formControlname="bank">
  
  <option> 1 </option>
  <option> 2 </option>
  <option> 3 </option>
  <option> 4 </option>
  
</select>

htmlcssangulartypescriptfunction

Answer №1

If you want it to work smoothly, simply click on the select option and everything should fall into place. Just remember that the footer z-index has been set to 0. Don't forget to include jquery in your code.

$('.test').on('click', () => {
  $('footer').css('z-index', '0');
})
footer {
  z-index: 9998;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<select class="test" placeholder="select an option" formControlname="bank">

  <option> 1 </option>
  <option> 2 </option>
  <option> 3 </option>
  <option> 4 </option>

</select>

<footer>footer</footer>

Answer №2

Avoid using the previous answer which involved jQuery. It is crucial to never manipulate the DOM directly when working with Angular.

It's impossible to reliably detect when a dropdown is opened or closed because it can be triggered in ways other than clicking on it. For example, if the <select> element is focused and the user presses enter, the dropdown will open without firing the click event.

If you need this functionality, consider looking for custom components online. One option that comes highly recommended is: https://github.com/ng-select/ng-select

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