JavaScript Questions

1. Which of the following is the language of javascript?

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

function solve(arr, rotations){
 if(rotations == 0) return arr;
 for(let i = 0; i < rotations; i++){
   let element = arr.pop();
   arr.unshift(element);
 }
 return arr;
}
// solve([44, 1, 22, 111], 5);

3. Which handler is triggered when the content of the document in the window is stable and ready for manipulation?

4. What will be the output of the following JavaScript code If these is a p tag element with id="demo"?

var numbers1 = [4, 9];
var numbers2 = numbers1.map(myFunction);
document.getElementById("demo").innerHTML = numbers2;
function myFunction(value, index, array)
{
return value * 2;
}

5.  Where is Client-side JavaScript code is embedded within HTML documents?

6. Any time you include javascript variable in HTML document, you must enclose those lines inside a _______

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

 print(typeof(NaN)); 

8. Which of the following is correct about JavaScript?

9. Which JavaScript method is used to write HTML output?

10. What does the ‘toLocateString()’ method do in JS?

11. Which function is used to clear the timer value?

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

const obj1 = {Name: "Hello", Age: 16};
const obj2 = {Name: "Hello", Age: 16};
print(obj1 === obj2);

13. Arrays in JavaScript are defined by which of the following statements?

14. What is the purpose of the Attr object in the HTML DOM ?

15. Which of the following is the method used to add an element to the desired location?