<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
<p>Text text text</p>
<p id="p_id"></p>
<script>
$(document).ready(function() {
var pp = $("p"); // get
$("#p_id").text("p_id: " + pp[0].innerHTML); // set
});
</script>
</body>
</html>
<!--
run:
Text text text
p_new: Text text text
-->