JSFiddle - React, Tailwind, and code Playground
by Ravi Iyer
HTML
<form name='testform' id='testform' action=''>
<label for='fld1'> Test value </label>
<input name='fld1' id='fld1' />
<input type='button' name='btn2' id='btn2' value='Test' />
<iframe name='frm1' id='frm1'></iframe>
</form>
JavaScript
$('#frm1').contents().find('html').html("<form name='frmform' id='frmform' action=''><input type='button' name='btn1' id='btn1' value='Change' /> </form>");
$('#btn2').on('click',function(){
alert('button clicked');
var pdoc = window.parent.document.getElementById('fld1');
pdoc.val('changed');
});