Basic JSON Interview question and answers
1. What is JSON?
Answer: JSON stands for JavaScript Object Notation.
It is a lightweight data-interchange format used for exchanging and storing data.
2. What are the benefits of using JSON?
Answer: JSON is easy to read and understand, it is lightweight and can be parsed quickly,
it is language-independent, and it is supported by many programming languages.
3. What are the main components of JSON?
Answer: The main components of JSON are objects, arrays, strings, numbers,
booleans, and null.
4. How do you parse JSON data?
Answer: JSON data can be parsed using the JSON.parse() method in JavaScript.
5. How do you convert JSON data to a string?
Answer: JSON data can be converted to a string using the JSON.stringify() method in
JavaScript.
6. What is the difference between JSON and XML?
Answer: JSON is simpler and more compact than XML. JSON does not require end tags and
does not support attributes, while XML does.
7. How do you access JSON data?
Answer: JSON data can be accessed using the dot notation or bracket notation in JavaScript.
8. What is the syntax for creating a JSON object?
Answer: The syntax for creating a JSON object is { "key": "value" }.
9. What is the difference between JSON and JavaScript objects?
Answer: JSON is a text-based data format, while JavaScript objects are objects in the
programming language.
10. How do you validate JSON data?
Answer: JSON data can be validated using various online tools such as JSONLint
or using the JSON.parse() method in JavaScript.
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