What is the output of the following code?

What is the data type that the async attribute optionally accepts?

Which function is used to get input from the user in JavaScript?

The attribute that can be used to extend the lifetime of a cookie is _______

Output of the following React component code:

 The keyword or the property that you use to refer to an object through which they were invoked is _________ 

Which of the following is not considered an error in JavaScript?

What is the output of the following code?

<script>

var x = 20;

var y = x + 3;

var x;

window.alert(x);

</script>

 What will be the output of the following JavaScript code? 

<p id="demo"></p>
<script>
var carName = "Maruti";
var carName;
document.getElementById("demo").innerHTML = carName;
</script>

The basic difference between JavaScript and Java is that in JavaScript, _____.