Question 1
Who created this web scripting language while working at Netscape in 1995?
- Brendan Eich
- Tim Berners-Lee
- James Gosling
- Guido van Rossum
Show the answer
Brendan Eich
Technology · Programming
JavaScript trivia quiz
JavaScript trivia, played live: seven rounds, ten seconds a question. QuizDown has over 120 JavaScript questions, from easy to expert, and you’re matched with a real player who gets the same seven.
What the JavaScript questions cover
- Arrays
- Promises
- JSON
- Modules
- Comparison
- Equality
- Functions
- Generators
- Operators
- Values
- Async
- Classes
Try three JavaScript questions
Question 2
Which file extension is commonly used for source files in this language?
- .py
- .js
- .cpp
- .java
Show the answer
.js
Question 3
Which keyword declares a block-scoped variable whose value can later change?
- const
- static
- let
- var
Show the answer
let
In a real match you’d have ten seconds for each, and faster right answers score more.
How a JavaScript match works
- Seven rounds. The same seven JavaScript questions for you and your opponent.
- Ten seconds each. A right answer in two seconds scores 20; at the buzzer, 11.
- The last round counts double. It’s never over until it’s over.
Your JavaScript ranking is its own: climb it without your other topics dragging you down.