Select2 在第一个 select2 打开事件上打开另一个 select2

Question

 $(".js-example-events").select2(); $('.js-example-events').on("select2:open", function () { $("#s1").select2("open"); }); function test(){ $("#s1").select2("open"); }

 <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.8/js/select2.min.js"></script> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.8/css/select2.min.css"/> <select class="js-example-events" style="width:300px;"> <option>Select One</option> <option>Select1</option> </select> <select class="js-example-events" id="s1" style="width:300px;"> <option>Selects Two</option> <option>Select1</option> </select> <button onclick="test()"> Test </button>

I want to open 2 select2 at a time.

It works when I use a button click event, but not when I use select2 open event

<select class="js-example-events" style="width:300px;">
    <option>Select One</option>
    <option>Select1</option>
</select>

<select class="js-example-events" id="s1" style="width:300px;">
    <option>Selects Two</option>
    <option>Select1</option>
</select>

<button onclick="test()">Test</button>

JS

$(".js-example-events").select2();

$('.js-example-events').on("select2:open", function () {
    $("#s1").select2("open");  // not working here
});

function test(){
    $("#s1").select2("open"); // but work here well
}

Working JSFiddle

https://jsfiddle.net/gqo5cL6x/

select2("open"); is not working

Answer 1

you can use tag + class in function. ex: $("select[class='js-example-events']").select2("open").

$("select[class='js-example-events']").on("select2:open", function () { 
   $("#s1").select2("open"); // not working here })