JavaScript Trivia #10

Welcome to JavaScript Trivia #10! Test your knowledge of JavaScript with these fun and challenging questions.

Question 1:

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

1. var x = 10;
2. int x = 10;
3. float x = 10;
4. const x = 10;

Question 2:

What is the result of 10 + “5” in JavaScript?

1. 15
2. "105"
3. NaN
4. Error

Question 3:

Which of the following is not a valid JavaScript data type?

1. string
2. boolean
3. number
4. array

Question 4:

What operator is used for equality comparison in JavaScript?

1. =
2. ==
3. ===
4. !=

Question 5:

What does the console.log() function do in JavaScript?

1. Displays a message in an alert box
2. Writes a message to the document
3. Outputs a message to the console
4. None of the above

Once you have answered all the questions, check your answers below:

Answers:

1. 1. var x = 10;
2. 2. "105"
3. 3. array
4. 4. ===
5. 5. Outputs a message to the console