Dynamically create and submit forms

Create a dynamic form Forms , Pass parameters to backend

<button onclick="go()"> Click on </button>

<script>
  function go() {
    
    var form = document.createElement("form");
    form.action = "https://abc.com/auth/sign";
    form.method = "post";
    var input = document.createElement("input");
    input.type = "hidden";
    input.name = "aa";
    input.value = "bb";
    form.appendChild(input);
    document.body.appendChild(form).submit();
  }
</script>