indexof() and lastindexOf() for arrays in javascript

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indexof() and lastindexOf()  for arrays  in javascript



<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title>array</title>


</head>
<body>
	<script>
	var numb=[1,2,3,4,5,6,7];
	var ver=numb.lastIndexOf(3);
	if(ver>-1)
	{
		console.log("Yes it's present and the position is : " + ver);
	}
	else
	console.log("No it's not present");
	</script>
</body>
</html>



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