Edit This Code:
<!DOCTYPE html>
<html>
<body>

<p id="demo"></p>

<script>
var person = [];
person[0] = "John";
person[1] = "Doe";
person[2] = 46;
document.getElementById("demo").innerHTML =
person[0] + " " + person.length;
</script>

</body>
</html>



Result:
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