JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<div data-field="SSN">
    <label for="text" class="aaa">label</label>
    <input type="text" class="bbb">
    <span class="ccc">validation</span>
</div>

JavaScript

$('div[data-field="SSN"]').children('.bbb').prop('placeholder', 'some_text_here');