JSFiddle - React, Tailwind, and code Playground

by Neo Aptt

HTML

<select class='selectme' multiple='multiple'>
    <option value='1'>One</option>
    <option valuse='2'>two</option>
</select>

JavaScript

var previous;
$(document).on('focus', '.selectme', function () {
    previous = $(this).val();
    console.log(previous);
}).change(function () {
    console.log(previous);
    console.log($(this).val());
});