重新加载特定的选择标记，而无需重新加载整个页面

Question

I am trying to make a form page in adding new client in a database. The form consist of a selection tag that has options for adding house number. But there are circumstances like house number is not yet placed on the database, so I decided to create a button for adding new house no (using modals).

Form:

<div class="col-md-3 form-group" id="autoload">      
<label>
  Household: <a data-toggle="modal" data-target="#addHousehold" 
  style="cursor: pointer; text-decoration: none;">
  <i class="fa fa-plus" >Add</i></a>
</label>

<select class="form-control select2" style="width: 100%;">
    <option selected="selected">Select Household</option>
      <?php foreach($result3 as $row): ?>
    <option><?=$row['house_no']?></option>
      <?php endforeach ?>

</select>

</div>

Script for adding new house number, and refresh the selection when new house number is successfully added:

$('#addHouseholder').click(function(){
        var householder = $('.householder').val()
        var street = $('.strsel1').val();

        $.ajax({
          method: "POST",
          url: "insert.php",
          data: {householder:householder,street1:street}
        }).then(()=>{

            $("#autoload").load(" #autoload");
            alert('Household Added')
        })

This function successfully, the only problem is the division of the selection is deformed. I also forgot to say that I reload the div, but I wonder if it is possible to just reload the selection. I am not sure how to execute this. Looking forward for your help. Thank you very much!

Answer 1

Are you using select2 (https://select2.org/)?

If so, you can use the ability to programmatic control the select.

https://select2.org/programmatic-control/add-select-clear-items

By using:

var data = {
    id: 1,
    text: 'Barn owl'
};

var newOption = new Option(data.text, data.id, false, false);
$('#mySelect2').append(newOption).trigger('change');

You could return the option in the ajax response and populate the select.