Some things I couldn't do

[mustafavanli]

Is it possible to give a method that will trigger while creating?
AND
How I adding options to optgroup?

[pardeyke]

You can add option groups like so:

<select id="example" class="form-select">
  <optgroup label="Fruit">
    <option value="apple">Apple</option>
    <option value="banana">Banana</option>
    <option value="grape">Grape</option>
    <option value="kiwi">Kiwi</option>
    <option value="orange">Orange</option>
    <option disabled value="snake_fruit">Snake fruit</option>
  </optgroup>
  <optgroup label="Vegetable">
    <option value="broccoli">Broccoli</option>
    <option value="carrot">Carrot</option>
    <option value="cucumber">Cucumber</option>
    <option disabled value="eggplant">Eggplant</option>
    <option value="spinach">Spinach</option>
    <option value="tomato">Tomato</option>
  </optgroup>
</select>

[mustafavanli]

At first, the select element will be empty.

[pardeyke]

What do you mean? When pasting the above code in an html page, this is the result:

What else do you expect?

[mustafavanli]

I fill out my select option only according to the response from axios.
How do I group and add data from response?