Quiz - JavaScript Fundamentals | Lancecourse

JavaScript Fundamentals

A quiz to test your knowledge of JavaScript basics.

Question 1 Which symbol is used to comment out a single line in JavaScript?: // /* # &&

Question 2 What is the keyword used to declare a variable that cannot be reassigned?: const let var immutable

Question 3 Which of the following keywords is used to declare a variable that can be reassigned?: let const static various

Question 4 What does the fetch() function do in JavaScript?: Sends and receives data asynchronously Creates a new HTML element Writes data to the console None of the above

Question 5 What will the following code output? console.log(typeof "Hello");: string string value number text

Question 6 What is the purpose of the document.getElementById() method?: To retrieve an element by its ID To create a new HTML element To change the ID of an element None of the above

Question 7 Which of the following is a way to include JavaScript in an HTML document?: <script> tag <javascript> tag <js> tag <code> tag

Question 8 Which of the following is NOT a JavaScript data type?: ArrayList Object Function Boolean

Question 9 What does HTML stand for?: Hyper Text Markup Language High Text Markup Language Hyperlink and Text Markup Language None of the above

Question 10 Which data type is used to represent true or false values in JavaScript?: Boolean String Integer Object

Answer all the questions then submit.