New program
<!DOCTYPE html>
<html>
<head>
<title>DOM Examples</title>
</head>
<body>
Hello world
Hello world
Hello world
Hello world
Hello world2
Hello world3
[removed]
const element=document.getElementsByTagName('p');
element[1].textContent="Updated paragraph";
const qselector=document.querySelector('#myp');
qselector.textContent="The updated query selector";
qselector.style.fontWeight="bold"
const qclass=document.querySelector('.myp');
qclass.style.color='green';
const allsel=document.querySelectorAll('.mypp');
allsel.forEach(el => el.style.color='red');
const newElement=document.createElement('p');
newElement.textContent = "This is the new element Added in the DIV";
document.getElementById('mydiv').appendChiled('new');
[removed]
</body>
</html>