JSFiddle - React, Tailwind, and code Playground

HTML

<input type="checkbox" name="ctl00_ContentPlaceHolder1_ctl00_openid_username" />
<input type="checkbox" name="ctl00_ContentPlaceHolder1_ctl00_openid_identifier" />

<input type='button' id='myButton' value='Check Button'>

JavaScript

$('#myButton').click(function() {
  $('input[name$=openid_username]').prop('checked',true);
$('input[name$=openid_identifier]').prop('checked',true);
  });