Q61 Consider this code:
new Promise((resolve, reject) => {
throw new Error('Error');
})
.catch(error => console.log(error.message))
.then(() => console.log('Completed'));
What will be the output?

Q62 Which of the following is a correct syntax to display “Hello World” in an alert box using JavaScript?

Q63 Which of the following is an example of a loosely typed language?

Q64 Which operator is used to check both the value and the type of a variable in JavaScript?

Q65 What is the output of the following code snippet?
let x = 'Hello';
let y = 'World';
console.log(x + ' ' + y);

Q66 What is the output of this code snippet?
for (let i = 0; i < 3; i++) {
console.log(i);
}

Q67 Consider the following code:
let x = 5;
let result = (x > 3) ? 'Yes' : 'No';
console.log(result);
What is the output?

Q68 Find the error in the following code:
for (let i = 0; i <= 5; i++) {
if(i % 2 == 0) continue;
console.log(i);
}

Q69 What is the purpose of a function in JavaScript?

Q70 How do you define a function in JavaScript?

Q71 What will be the output of this function call?
function sum(a, b) {
return a + b;
}
console.log(sum(3, 4));

Q72 In JavaScript, what is a callback function?

Q73 Which of the following is true about arrow functions in JavaScript?

Q74 Consider the following code snippet:
function greet() {
return 'Hello World';
}
console.log(greet());
What is the output?

Q75 Identify the error in this function:
function multiply(a, b) {
console.log(a * b);
}

Q76 What is wrong with this function declaration?
function power(base, exponent) {
if (exponent == 0) return 1;
else return base * power(base, exponent - 1);
} console.log(power(2));

Q77 Which method is used to add an element to the end of an array in JavaScript?

Q78 How do you find the length of an array in JavaScript?

Q79 What does the splice method do in an array?

Q80 Which of the following array methods in JavaScript does not change the original array?

Q81 $$\begin{gathered} What is the output of this code snippet? \\ let arr = [10, 20, 30, 40]; \\ let newArr = arr.map(x => x / 10); \\ console.log\left(newArr\right); \end{gathered}$$

Q82 What will be the output of this code snippet?
let numbers = [1, 2, 3];
numbers[10] = 11;
console.log(numbers.length);

Q83 Identify the issue in this array declaration:
let numbers = new Array(-5);

Q84 How do you access the value of a property in a JavaScript object?

Q85 Find the issue in this object definition:
let obj = { '1a': 10, b: 20 };
console.log(obj.1a);

Q86 Identify the error in this object method:
let obj = {
greet: function() {
return 'Hello, ' + name;
}
};
console.log(obj.greet());

Q87 Which JavaScript method is used to select an HTML element by its ID?

Q88 What is the difference between innerHTML and textContent properties in DOM manipulation?

Q89 Consider this code:
let items = document.querySelectorAll('.item');
console.log(items.length);
What does it output if there are three elements with class item in the HTML?

Q90 Spot the mistake in this code:
let btn = document.getElementById('submit');
btn.onClick = function() {
console.log('Clicked');
};