JSFiddle - React, Tailwind, and code Playground

by TCHdevlp

HTML

<select name="test.machin.truc" id="test.machin.truc">
    <option value="1">Un</option>
    <option value="2">Deux</option>
    <option value="3">Trois</option>
</select>
<input type="button" value="test" id="boutontest"/>

JavaScript

$("#boutontest").click(function(){
  $('select[name="test.machin.truc"]').val('3'); 
});