JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
    <input type="checkbox" value="a"/>a
    <input type="checkbox" value="b"/>b
</div>
<button id="trigger">Get Values</button>

JavaScript

$("#trigger").click(function () {
    var selected = $("input:checked");
    var values = [];
    selected.each(function (i,d) {
        values.push(d.value);
    });
    console.log(values);

});