JSFiddle - React, Tailwind, and code Playground
HTML
<div class="et_pb_text et_pb_module et_pb_bg_layout_light et_pb_text_align_left et_pb_text_0">
<form method="post" action="" id="gotowp_personal_webinar_registration" name="gotowp_personal_webinar_registration" novalidate="novalidate">
<table class="tableborder"><thead><tr class="gotowp-subject"><th class="tableheader subject" colspan="2">Intermediate/Advanced Training</th></tr></thead><tbody><tr class="gotowp-date"><td class="date" colspan="2"><b>Date and Time</b> <br>Wed, Jul 13, 2016 07:00 PM - 08:00 PM EDT</td></tr><tr class="gotowp-firstName"><td>First Name</td><td><input type="text" id="firstName" name="firstName" size="20" class="gotowp-input-text required"></td></tr><tr class="gotowp-lastName"><td>Last Name</td><td><input type="text" id="lastName" name="lastName" size="20" class="gotowp-input-text required"></td></tr><tr class="gotowp-email"><td>Email</td><td><input type="text" id="email" name="email" size="20" class="gotowp-input-text required email"></td></tr><tr>
<input type="hidden" value="201" name="returnpageid">
<input type="hidden" value="4335173513612455939" name="webinarid">
<td><input type="hidden" value="gotowp_personal_register_webinars" name="action"></td>
<td><input type="submit" value="Register Now" name="submit" style="" id="register_now_submit"></td>
</tr>
</tbody>
</table>
</form>
<form method="post" action="" id="gotowp_personal_webinar_registration" name="gotowp_personal_webinar_registration">
<table class="tableborder"><thead><tr class="gotowp-subject"><th class="tableheader subject" colspan="2">Live London Trading Session </th></tr></thead><tbody><tr class="gotowp-date"><td class="date" colspan="2"><b>Date and Time</b> <br>Wed, Jul 6, 2016 12:15 AM - 02:15 AM MDT</td></tr><tr class="gotowp-firstName"><td>First Name</td><td><input type="text" id="firstName" name="firstName" size="20" class="gotowp-input-text required"></td></tr><tr class="gotowp-lastName"><td>Last...
JavaScript
jQuery(document).ready(function($){
$('input[name="firstName"]').val("Test");
$('input[name="lastName"]').val("Test2");
$('input[name="email"]').val("[email protected]");
});