Level 3 of DOM events standardizes to which event?

What kind of expression is "new Point(2,3)"?

What will be the output of the following code?

var a1 = [,,,]; 

var a2 = new Array(3); 

0 in a1 

0 in a2

What must be done to implement Lexical Scoping?

What will be the output of the following JavaScript code?

var a = [1,2,3,4,5];

a.slice(0,3);

Which React class-based component life cycle methods does the useEffect hook serve the same purpose as?

What will be the output of the following JavaScript code?

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

<script>

var x = 5;

var y = 2;

var z = x % y;

document.getElementById("demo").innerHTML = z;

</script>

With respect to the following class, how will you create an object?

What is the meaning of 'Augmenting classes' in JavaScript?

What will be the output of the following JavaScript code?

<p id="demo"></p>
<script>
var numbers = [45, 4, 9, 16, 25];
var someOver18 = numbers.some(myFunction);
document.getElementById("demo").innerHTML = "Some over 18 is " + someOver18;
function myFunction(value, index, array)
{
 return value > 10;
}
</script>