1. What will be the output of the following code snippet?

let sum = 0; 
const a = [1, 2, 3];
a.forEach(getSum);
print(sum);
function getSum(ele) {
   sum += ele;
}

2. How to stop an interval timer in Javascript?

3. What will be the output of the following JavaScript code?

function printArray(a) 
{
     var len = a.length, i = 0;
     if (len == 0)
        console.log("Empty Array");
     else 
     {
// do-while loop in javascript
         do 
         {
             console.log(a[i]);
         } while (++i < len);
     }
}

4. In JavaScript, what is a block of statement?

5. What will be the output of the following JavaScript code with a p tag with id=demo?

function myFunction() 
{
    document.getElementById("demo").innerHTML = Math.atan2(8, 4);
}

6. in javascript "===" operator defines what?

7. Which is the correct syntax for the function definition?

8. Which JavaScript statements when embedded in an HTML page can respond to user events such as mouse clicks, form input and page navigation

9. Which property references the DOM object that dispatched an event?

10.  If A is the superclass and B is the subclass, then subclass inheriting the superclass can be represented as _________

11. Which of the following is not considered as an error in javascript?

12. Among the given statements, which statement defines closures in JavaScript?

13. Which is the correct syntax to call an external JavaScript file in the current HTML document?

14. Which collection object allows unique value to be inserted only once?

15. Why JavaScript Engine is needed?