JSFiddle - React, Tailwind, and code Playground

HTML

<div class="bs-example">
    <input type="text" id="typehead" style="width: 500px;" class="form-control" placeholder="accounts" />
    </br>
    <input type="text" class="form-control" placeholder="accounts" />
</div>
<div class="bs-example">
    <input type="text" id="typehead2" style="width: 100px;" class="form-control" placeholder="accounts" />
    </br>
    <input type="text" class="form-control" placeholder="accounts" />
</div>

JavaScript

function myFunction($el) {
    return $el.closest('div.bs-example').width();
}

alert(myFunction($('#typehead')));

alert(myFunction($('#typehead2')));