Answers for "how to get value from select option onchange function in javascript"

js select on change value

document.getElementById('my-select').addEventListener('change', function() {
  console.log('You selected: ', this.value);
});

how to get dropdown selected value in javascript onchange

function handleSelectChange(event) {

    var selectElement = event.target;
    var value = selectElement.value;
    console.log(value);
}