JSFiddle - React, Tailwind, and code Playground

JavaScript

$(function(){
    array={};    
array.gare= [ "g point1","g point2"];
array.hopital = [ "h point1","h point2"];

$('body').append($('<select/>').attr('id',"sel"));
$.each(array, function(key,val){
    $('#sel').append($("<option/>").val(key).text(key).data('points',val));
    })

$('#sel').on('change', function(){ console.log($(this).find(':selected').data('points'));
                                 })
})