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  1. www.w3schools.com › js › js_interview_prepJavaScript Interview Preparation - W3Schools

    JavaScript. Interview Preparation. Try W3Schools' comprehensive Front-End interview preparation feature. A tool that will help you get ready for your next interview. W3Schools interview preparation is an interactive feature powered by AI, where you can select the role of the interviewer, ask questions, and receive guidance. After the interview ...

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  3. www.w3schools.com › xml › ajax_introAJAX Introduction - W3Schools

    A browser built-in XMLHttpRequest object (to request data from a web server) JavaScript and HTML DOM (to display or use the data) AJAX is a misleading name. AJAX applications might use XML to transport data, but it is equally common to transport data as plain text or JSON text. AJAX allows web pages to be updated asynchronously by exchanging ...

  4. www.javatpoint.com › ajax-interview-questionsAJAX Interview Questions - Javatpoint

    • What Is Ajax?
    • What Are The Advantages of Ajax?
    • What Are The Disadvantages of Ajax?
    • What Are The Security Issues with Ajax?
    • What Is The Difference Between Synchronous and Asynchronous Requests?
    • What Are The Technologies Used by Ajax?
    • What Is The Purpose of XMLHttpRequest?
    • What Are The Properties of XMLHttpRequest?
    • What Are The Important Methods of XMLHttpRequest?

    AJAX stands for Asynchronous JavaScript and XML. It is a group of related technologies used to display data asynchronously. In other words, it sends and retrieves data without reloading the web page. More details.

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    Quick Response
    Bandwidth utilization
    The user is not blocked until data is retrieved from the server.
    It allows us to send only important data to the server.

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    Dependent on JavaScript
    Security issues
    Debugging is difficult

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    AJAX source code is readable
    Attackers can insert the script into the system

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    Synchronous request blocks the user until a response is retrieved whereas asynchronous doesn't block the user. More details.

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    HTML/XHTML and CSS - These technologies are used for displaying content and style.
    DOM - It is used for dynamic display and interaction with data.
    XML - It is used for carrying data to and from server
    XMLHttpRequest - It is used for asynchronous communication between client and server.

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    It sends data in the background to the server.
    It requests data from the server.
    It receives data from the server.
    It updates data without reloading the page.

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    The important properties of the XMLHttpRequest object are given below. 1. onReadyStateChange - It is called whenever readystate attribute changes. 2. readyState - It represents the state of the request. 3. responseText - It returns response as text. 4. responseXML - It returns response as XML. 5. status - It returns the status number of a request. ...

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    abort() - It is used to cancel the current request.
    getAllResponseHeaders() - It returns the header details.
    getResponseHeader() - It returns the specific header details.
    open() - It is used to open the request.

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  5. medium.com › @JavaScript-World › mastering-ajax-inMastering AJAX in JavaScript: A Beginner’s Guide with Examples

    May 5, 2023 · Open the request, specifying the HTTP method and the URL. Send the request. Here’s a basic example of performing a GET request using AJAX: const xhr = new XMLHttpRequest(); xhr ...

  6. www.freecodecamp.org › news › ajax-tutorialAJAX Tutorial: What AJAX Is and How to Use it - freeCodeCamp.org

    Feb 22, 2020 · AJAX stands for Asynchronous JavaScript And XML. It is not a programming language. It is a technology for developing better, faster and interactive Web Applications using HTML, CSS, JavaScript and XML. HTML : Hypertext Markup Language (HTML) is used for defining the structure of a Web Application. CSS : Cascading Style Sheet (CSS) is used to ...

  7. www.geeksforgeeks.org › ajax-introductionAjax Introduction - GeeksforGeeks

    Oct 8, 2021 · Ajax is an acronym for Asynchronous Javascript and XML. It is used to communicate with the server without refreshing the web page and thus increasing the user experience and better performance. Prerequisites: There are no such pre-requisites required to understand the latter portion of the article.

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  9. www.codecademy.com › resources › docsJavaScript | AJAX | Codecademy

    Mar 11, 2022 · Asynchronous JavaScript and XML (AJAX) is a programming technique that allows web developers to fetch server data without having to wait for the page to reload first. Syntax. AJAX requests can be used in all modern web browsers and it utilizes the built-in XMLHttpRequest object: const request = new XMLHttpRequest(); Example

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