I'm using "datepicker" script and I've created a link that generates a series of dates on click.

Javascript

function change(){
    document.getElementById('datepicker').value='06/10/2022,20/10/2022,17/11/2022';
}

HTML

<input type="text" id="datepicker" name="test" class="datepicker" placeholder="select dates"><br>
<a href="#" onclick="change()">link</a>

On click on the link, these dates appear in the input field, but in the calendar these dates are not enabled...
They become enabled if I put the cursor in my input field and I have an action like "Ctrl+A" for example.

Does anyone have any idea ? thank you so much ! :-)