JSFiddle - React, Tailwind, and code Playground

HTML

<form id="thisForm">
<table>    
<tr bgcolor="#eeeeee">
	 <td valign="top" colspan="4" style="vertical-align: top;">
	     <input type="radio" onclick="javascript:teamAction('form')" value="none" name="teamAct">&nbsp;<b>Become</b> a Runner
	 </td>
     </tr>
            <tr bgcolor="#eeeeee">
	 <td valign="top" colspan="4" style="vertical-align: top;">
	     <input type="radio" onclick="javascript:teamAction('form')" value="none" name="teamAct">&nbsp;<b>Support</b> a Runner
	 </td>
     </tr>
        </table>
    </form>

JavaScript

$('#thisForm').html(function(i, html) {
    return html.replace(/a Runner/g," a Team Captain");
});