select change 이벤트 발생 시키기

1)

let select = document.querySelector('#selectId');
select.value="optionValue";
select.dispatchEvent(new Event('change'));

 

 

 

2)

var e = document.getElementById('id');
e.value = "옵션값";
var event = new Event('change', { bubbles: true });
e.dispatchEvent(event);