javascript getelementbyid

var element = document.getElementById("YourElementId");

document.getElementById("YourElementId");

document.getElementById("some_id");

document.getElementById("someid");

var myElement=document.getElementById("someElementID");

const element = document.getElementById('id');

 document.getElementById("demo");

 

<p id="YourId">How to use document.GetElementById in HTML</p>
<script>
  function demo(){
document.GetElementById('YourId')./* The thing you need to do to your code... Here I want .innerHTML you can take any...  */.innerHTML('/* what will it change... */')
  }
</script>
<!-- Now execute it by writing the button tag!--><button onclick="demo()">Click Me!!!</button>

function arata_formular(formular) {
    var el = document.getElementById( formular );

    el.style.visibility = "visible";
    el.style.display = el.style.display === "none" ? "inline" : "visible";
}