Welcome to the JS INTERVIEW 19 – 200 Question Series of JavaScript

Are you preparing for a JavaScript interview? Look no further! We have compiled a series of 200 questions that will help you test and enhance your knowledge of JavaScript.

Question Example:

What does the following code output?

    console.log(1 + "2" + "2"); // Output: 122
    console.log(1 + +"2" + "2"); // Output: 32
    console.log(1 + -"2" + "2"); // Output: -12
    console.log(+"1" + "1" + "1"); // Output: 111
    console.log("A" - "B" + "2"); // Output: NaN2
    console.log("A" - "B" + 2); // Output: NaN
    

Test Your Knowledge:

Here are a few sample questions to get you started:

1. What is JavaScript?
2. What are the different data types in JavaScript?
3. What is the difference between ‘null’ and ‘undefined’ in JavaScript?
4. What is a closure in JavaScript?

Conclusion:

By thoroughly going through these 200 questions, you will be well-prepared for your JavaScript interview. Good luck!