jQuery is not displaying the updated value in the UI after a selection change

Greetings everyone, I've encountered an issue when trying to change the select list option in jQuery. Everything functions perfectly outside of this particular theme. The problem arises when I create a select list within this specific theme called "developr".

Here is my code:

<select id="PackageID" name="PackageID" class="validate[required] withClearFunctions" style="width:200px">
  <option value="">Please select</option>
  <option value="1">100 paper</option>
  <option value="2">500 paper</option>
</select>

Here is the rendered output:

<span class="drop-down custom-scroll">
  <span class="selected">Please select</span>
  <span>100 paper</span>
  <span>500 paper</span>
  <div class="custom-vscrollbar" style="display: none;"><div></div></div>                           
</span>

Even though the HTML changes when I select a different option using jQuery, the user interface does not update accordingly.

Code snippet after selecting from the select list:

<span class="drop-down custom-scroll">
  <span>Please select</span>
  <span class="selected">100 paper</span>
  <span>500 paper</span>
  <div class="custom-vscrollbar" style="display: none;"><div>
</span>

Answer №1

I successfully resolved the issue by triggering the change event with jQuery.

$('#PackageID').change();

As a result, the UI was updated accordingly.

Answer №2

If you're looking to set an option without using a select drop down menu, there are a few methods you can use. For the most concise and readable option, check out the fiddle link below:

JSFiddle

Method 1:

$('#PackageID').val('2'); 

Method 2 - by index:

$('#PackageID :nth-child(1)').prop('selected', true);

Method 3 - by value:

$('#PackageID option:eq(2)').prop('selected', true);

All of these options will update the DOM and render correctly.

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