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<!DOCTYPE html>
<html>
<body>
	<h1>Demo: Accessing Array Elements in JavaScript</h1>
	
	
	
	
	
	
	
	
	
	
	
		
	<script>
		let numArr = [10, 20, 30, 40, 50];
		document.getElementById("p1").innerHTML = numArr.at(0); 
		document.getElementById("p2").innerHTML = numArr.at(1); 
		document.getElementById("p3").innerHTML = numArr.at(2); 
		document.getElementById("p4").innerHTML = numArr.at(3); 
		document.getElementById("p5").innerHTML = numArr.at(4);

document.getElementById("p6").innerHTML = numArr.at(-1); 
		document.getElementById("p7").innerHTML = numArr.at(-2); 
		document.getElementById("p8").innerHTML = numArr.at(-3); 
		document.getElementById("p9").innerHTML = numArr.at(-4); 
		document.getElementById("p10").innerHTML = numArr.at(-5); 
		document.getElementById("p11").innerHTML = numArr.at(-6); 
 </script>
</body>
</html>

Result: