Explore the following interview questions. Whether you are a student, professional, or enthusiast, these questions can be a valuable resource for sharpening your skills and knowledge in JSON.
Answer:JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It is based on a subset of JavaScript language syntax but is independent of programming languages.
Answer:JSONP (JSON with Padding) is a technique for making cross-domain JSON requests. It involves creating a script tag with a callback function as a parameter.
Answer:The file extension of JSON is .json.
Answer:JSON Schema is a vocabulary that allows you to annotate and validate JSON documents. It provides a way to describe the structure of JSON data, similar to how a database schema describes the structure of a relational database.
Answer: JSON consists of key-value pairs, where keys are strings and values can be strings, numbers, objects, arrays, booleans, or null. It is often represented as a nested structure.
Answer: JSON (JavaScript Object Notation) supports the following basic data types:
1.String, example - {"name": "Harry Potter"}2.Number, example - {"age": 40}3.Boolean, example - true4.Array, example - [1, "apple", false]5.Object, example - {"city": "London","country": "UK"}6.Null, example - null
Answer: You can use JSON.parse() in JavaScript to convert a JSON string to a JavaScript object.
var jsonString = '{"name": "John", "age": 30}';
var jsonObject = JSON.parse(jsonString);
Answer: You can use JSON.stringify() in JavaScript to convert a JavaScript object to a JSON string.
var person = { name: "Alice", age: 25 };
var jsonString = JSON.stringify(person);
Answer: When parsing JSON in JavaScript using JSON.parse(), you can wrap it in a try-catch block to handle potential parsing errors.
try {
var jsonObject = JSON.parse(jsonString);
} catch (error) {
console.error("Error parsing JSON: ", error);
}
Answer: The MIME type "application/json" is used to indicate that the content of a file or document is in JSON format. It helps browsers and applications understand how to handle the data.
Answer:JSON is more concise and easier to read than XML. It uses a simple key-value pair structure, while XML uses tags. JSON is typically faster to parse, and it's widely used for web APIs.
{
"name": "Harry Potter",
"age": 30,
"isStudent": false,
"grades": [95, 87, 92],
"address": {
"city": "London",
"country": "UK"
}
}
<person>
<name>Harry Potter</name>
<age>30</age>
<isStudent>false</isStudent>
<grades>
<grade>95</grade>
<grade>87</grade>
<grade>92</grade>
</grades>
<address>
<city>London</city>
<country>UK</country>
</address>
</person>
Answer: JSON Web Tokens (JWT) are a compact, URL-safe means of representing claims between two parties. They are commonly used for authentication and authorization in web development.
Answer: Here are the Key issues with Using JSON