What is the use of document.getelementById?

Answer 1

Select specific tag element of html .Example:-
<p id="hello"></p>
In js
var a=document.getElementById("hello");
a.innerHTML=document.write("My name");
.It will call p tag using id attribute and then manipulate it to finally print
My name.

Answer 2

Kumaran it's document.getElementById()
You can go to: https://www.w3schools.com/jsref/met_document_getelementbyid.asp
Hope this helpful! Programming is fun! 😄

Answer 3

Kumaran rmb that js is case sensitive😄