on select change get value jquery code example

Example 1: .on change get value

$('select').on('change', function() {
  alert( this.value );
});

Example 2: select onchange jquery get the selected option data attribute

$('#country').on('change', function(){
    let id = $(this).find(':selected').data('id');
    console.log(id);
  });

Example 3: jQuery change select value

$("#mySelectElementID").val("my_new_value"); //change selected option/value with jQuery