Which statement correctly declares a JavaScript arrow function?

What is the purpose of the 'return' statement in a JavaScript function?

A). To end the function execution

B). To return a value from the function

C). To print a value to the console

D). To declare a variable

What is the purpose of the 'break' statement in a JavaScript switch case?

A). To continue to the next case

B). To exit the switch statement

C). To restart the switch statement

D). To execute the default case

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';

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};

What is the correct way to declare a JavaScript class?

A). class Rectangle {}

B). let Rectangle = {}

C). function Rectangle() {}

D). Rectangle {}

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

Which operator is used for strict inequality in JavaScript?

A). !==

B). !=

C). <>

D). /=

What is the purpose of the 'this' keyword in JavaScript?

A). To refer to the current HTML element

B). To refer to the current JavaScript file

C). To refer to the current object

D). To refer to the current function

How do you access the last element of a JavaScript array?

A). colors[colors.length - 1];

B). colors.last();

C). colors[-1];

D). colors.getLast();

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 '''