JSFiddle - React, Tailwind, and code Playground

HTML

<input type="checkbox" checked="true" />
<input type="checkbox" />
<input type="checkbox" />

JavaScript

$("input[type=checkbox]").each(function() {
    var elem = $(this);
    if (elem.is(":checked")) {
       alert(elem + " is checked");
    } else { alert('Not checked'); }
})