Switching item in dropdown menu with JavaScript

How can I use JavaScript to change the selected item in a drop-down menu?

<select name="example_length" aria-controls="example" class="">
<option value="10">10</option>
<option value="25">25</option>
<option value="50">50</option>
<option value="100">100</option>
</select>

I attempted to change the value of the drop-down menu with this code:

document.getElementsByName("example_length")[0].value = 100;  

However, only the number changed in the HTML code and not the actual content;

Here is an example link showcasing table sorting.

Answer №1

I was able to discover the solution

using pure JavaScript code

document.getElementsByName("example_length")[0].value = 50;
var event = new Event('change');
document.getElementsByName("example_length")[0].dispatchEvent(event);

Alternatively, with jQuery

$( "select[name='example_length']" ).val(50).change();

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