<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
</head>
<body>
</body>
<script>
let index = 3;
let arr = [1,2,3,4,5];
const result = arr.splice(index, 1); // [4]
// arr => [1,2,3,5]
console.log(result);
</script>
</html>
