Related Topics AJAX Question 45 How to deal with cross-origin resource sharing (CORS) issues when making an AJAX request? Answer Cross-origin resource sharing (CORS) is a security mechanism implemented by web browsers to restrict AJAX requests from different origins. CORS issues can arise when making an AJAX request from a web page hosted on one […]
Related Topics AJAX Question 40 What is the purpose of processing responses with JavaScript in AJAX? Answer The purpose of processing responses with JavaScript in AJAX is to manipulate the content of a web page dynamically without requiring a full page refresh. In other words, when a user interacts with a web page and makes
Related Topics AJAX Question 37 How to make sure that JSON data is secure when using it with AJAX requests? Answer To ensure that JSON data is secure when using it with AJAX requests, you should take the following measures: Validate and sanitize input: When accepting user input or data from external sources, you should
Related Topics AJAX Question 32 What is JSON and how does it differ from XML? 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 a text-based format that uses a simple syntax for describing
Related Topics AJAX Question 27 Uses of AJAX in a real-world web application? Answer AJAX can be used in various scenarios in a web application to enhance user experience and make it more dynamic. Here’s an example: Consider a social media web application where users can post comments and view comments from other users. Instead
Related Topics AJAX Question 20 Explain the difference between synchronous and asynchronous requests? Answer In web development, a request is a message sent by a client (usually a web browser) to a server asking for some information or action to be performed. The difference between synchronous and asynchronous requests is in how the client and
Related Topics Node JS Question 119 What is the role of clustering in improving performance of Node.js applications? Answer Clustering is a technique used in Node.js to improve the performance of applications by utilizing multiple CPU cores. In a typical Node.js application, only a single instance of the Node.js process runs on a single CPU
Related Topics Node JS Question 114 What techniques do you use to improve the performance of a Node.js application? Answer There are several techniques that can be used to improve the performance of a Node.js application: Minimize I/O Operations: I/O operations can be expensive and can slow down an application. One way to minimize I/O
Related Topics Node JS Question 108 How to approach testing and debugging Node.js applications? Answer To approach testing and debugging Node.js applications, I typically follow the following steps: Writing Unit Tests: I start by writing unit tests for individual functions and modules to ensure that they work as expected. Integration Testing: After unit testing, I
Related Topics Node JS Question 100 Describe your experience with Node.js and its applications? Answer Node.js is a popular runtime environment built on top of the Google V8 JavaScript engine that allows developers to run JavaScript on the server-side. Node.js provides an event-driven, non-blocking I/O model that makes it well-suited for building scalable, real-time applications
