JSFiddle - React, Tailwind, and code Playground

HTML

<template>
  <form method="post">
    <input type="text" name="random" value="123">
    <input type="submit">
  </form>
</template>

<button>
showForm();
</button>

JavaScript

var form = $('form');

function handleFormSubmit() {
	form.off('submit');

	form.submit(function(e) {
  	e.preventDefault();
    
    $('body').append($('<p />').text("Random: " + $('input[name="random"]', form).val()));
  });
}

$('button').click(function() {
	if (form.length == 0) {
  	var template = $("template").html();
    
    $('body').append(template);
    
    form = $('form');
  } else {
    $('input[name="random"]', form).val(Math.random());
	}
  
  handleFormSubmit();
});

for (var i = 0; i < 5; i++) {
	$('button').click();
}

form.submit();