Q
Which statement correctly declares a JavaScript function?

Answer & Solution

Answer: Option A
Solution:
Option A correctly declares a JavaScript function named 'greet' using the 'function' keyword followed by parentheses for parameters (if any) and curly braces for the function body. This is the traditional way of defining functions in JavaScript. Options B and C are valid ways of defining functions as well, but they use different syntaxes (function expressions and arrow functions). Option D is incorrect as it does not define a function.
Related Questions on Average

What does the '===' operator check in JavaScript?

A). Type and value equality

B). Type equality only

C). Value equality only

D). Reference equality

Which statement correctly declares a JavaScript object?

A). let person = {name: 'John', age: 30};

B). const person = ('name' => 'John', 'age' => 30);

C). const person = ['name', 'John', 'age', 30];

D). var person = {name: 'John', age: 30};

Which statement correctly declares a JavaScript module?

A). export function myFunc() {}

B). const myModule = function() {}

C). module.exports = myModule;

D). import myModule from './myModule.js';

How can you prevent a JavaScript function from executing immediately?

A). Using async/await

B). Using the defer attribute in HTML script tag

C). Wrapping the function in parentheses

D). Using the setTimeout function

What is the correct way to declare a JavaScript class?

A). class Rectangle {}

B). let Rectangle = {}

C). function Rectangle() {}

D). Rectangle {}

Which method is used to remove the last element from a JavaScript array?

A). colors.pop();

B). colors.removeLast();

C). colors.splice(-1, 1);

D). colors.deleteLast();

How can you comment a single line of code in JavaScript?

A). // This is a comment

B). <!-- This is a comment -->

C). /* This is a comment */

D). ''' This is a comment '''

How can you add a new element to the end of a JavaScript array?

A). colors.push('blue');

B). colors.add('blue');

C). colors.insert('blue', colors.length);

D). colors[colors.length] = 'blue';

How can you convert a string to a number in JavaScript?

A). parseInt('10')

B). parseFloat('10.5')

C). Number('10')

D). All of the above

What is the correct way to declare a variable in JavaScript?

A). var x = 10;

B). let x = 10;

C). const x = 10;

D). variable x = 10;