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JavaScript AJAX and Fetch API

This quiz covers the fundamental concepts and techniques of JavaScript AJAX and the Fetch API, including asynchronous data fetching, HTTP requests, and working with JSON data.

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which JavaScript method is used to send an asynchronous HTTP request to a server?

  1. fetch()
  2. XMLHttpRequest()
  3. send()
  4. open()
Question 2 Multiple Choice (Single Answer)

What is the syntax for using the fetch() method?

  1. fetch(url)
  2. fetch(url, options)
  3. fetch(url, data)
  4. fetch(url, headers)
Question 3 Multiple Choice (Single Answer)

What is the default HTTP method used by the fetch() method?

  1. GET
  2. POST
  3. PUT
  4. DELETE
Question 4 Multiple Choice (Single Answer)

How can you specify the HTTP method for a fetch() request?

  1. Using the method option
  2. Using the type option
  3. Using the request option
  4. Using the data option
Question 5 Multiple Choice (Single Answer)

What is the purpose of the headers option in the fetch() method?

  1. To specify the request headers
  2. To specify the response headers
  3. To specify the request body
  4. To specify the response body
Question 6 Multiple Choice (Single Answer)

How can you send data with a fetch() request?

  1. Using the data option
  2. Using the body option
  3. Using the params option
  4. Using the query option
Question 7 Multiple Choice (Single Answer)

What is the purpose of the JSON.stringify() method?

  1. To convert a JavaScript object to a JSON string
  2. To convert a JSON string to a JavaScript object
  3. To parse a JSON string
  4. To validate a JSON string
Question 8 Multiple Choice (Single Answer)

What is the purpose of the JSON.parse() method?

  1. To convert a JavaScript object to a JSON string
  2. To convert a JSON string to a JavaScript object
  3. To parse a JSON string
  4. To validate a JSON string
Question 9 Multiple Choice (Single Answer)

What is the difference between a synchronous and asynchronous request?

  1. Synchronous requests wait for a response before continuing, while asynchronous requests do not.
  2. Synchronous requests are faster than asynchronous requests.
  3. Asynchronous requests are more secure than synchronous requests.
  4. Synchronous requests are easier to implement than asynchronous requests.
Question 10 Multiple Choice (Single Answer)

What are the benefits of using asynchronous requests?

  1. Improved performance and responsiveness
  2. Reduced server load
  3. Improved scalability
  4. All of the above
Question 11 Multiple Choice (Single Answer)

What is the purpose of the XMLHttpRequest object?

  1. To send and receive HTTP requests
  2. To parse JSON data
  3. To create HTML elements
  4. To handle events
Question 12 Multiple Choice (Single Answer)

What are the different states of an XMLHttpRequest object?

  1. UNSENT, OPENED, HEADERS_RECEIVED, LOADING, DONE
  2. NEW, CONNECTED, SENDING, RECEIVING, CLOSED
  3. REQUEST, RESPONSE, ERROR, ABORTED
  4. PENDING, ACTIVE, COMPLETED
Question 13 Multiple Choice (Single Answer)

How can you handle the response of an XMLHttpRequest request?

  1. Using the onload event
  2. Using the onreadystatechange event
  3. Using the onprogress event
  4. All of the above
Question 14 Multiple Choice (Single Answer)

What is the purpose of the readystatechange event in XMLHttpRequest?

  1. To notify when the request state changes
  2. To notify when the response is received
  3. To notify when the request is completed
  4. To notify when an error occurs
Question 15 Multiple Choice (Single Answer)

What is the purpose of the status property in XMLHttpRequest?

  1. To indicate the status code of the response
  2. To indicate the state of the request
  3. To indicate the size of the response
  4. To indicate the type of the response
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