Testquiz

Single Choice Questions

Only one of the answers is correct. Also this is just a single question.

What is a callback function in JavaScript?

A function passed into another function as an argument
A function that calls back the operating system
A function that repeats code

Incorrect 🙁

Multiple Choice Questions

Multiple answers can be correct. This is a quiz with multiple questions.

Quiz

What is the output of the following code snippet?

console.log(1 + '2' + 3 + 4);

10
16
1234

Incorrect 🙁

What is NOT the purpose of the 'use strict' directive in JavaScript?

It allows the use of new features in JavaScript
It enables strict mode, which catches common coding errors and unsafe actions
It is a comment that has no effect on the code
It is a directive to use the strict equality operator (===)

Incorrect 🙁