- AGET
- BXMLHttpRequest
- CXML
Answer: d) Ferromagnetic materials
Explanation: Ferromagnetic materials such as iron, nickel, and cobalt can be magnetized because they have unpaired electrons in their outer shells that can be aligned to create a magnetic field.
Answer: d) Magnetometer
Explanation: A magnetometer is a device used to measure the strength and direction of a magnetic field.
The XMLHttpRequest object is commonly used in JavaScript to interact with servers asynchronously. It provides methods for making HTTP requests and handling server responses without reloading the entire page.
The onreadystatechange event in AJAX is used to define a callback function that will be executed when the state of the XMLHttpRequest object changes, indicating different stages of the request-response cycle.
The POST method is commonly used in AJAX requests for sending data to the server. It allows for the transmission of data in the request body, making it suitable for sending large amounts of data securely.
The open() method in AJAX is used to initialize a new request. It specifies the HTTP method, the URL of the server, and other optional parameters before sending the request.
JSON, in the context of AJAX, stands for JavaScript Object Notation. It is a lightweight data interchange format used to transmit data between a client and a server.
In jQuery, the $.ajax() method is used to send AJAX requests. It provides a flexible and powerful way to make asynchronous requests to the server and handle responses.
The readyState property in AJAX is used to track the status of the XMLHttpRequest object. It indicates the current state of the request-response cycle, allowing developers to handle different stages accordingly.