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Ecr Interview Questions and Answers
Ques:- What are cookies sessions and local storage in web development
Right Answer:
Cookies are small pieces of data stored on the user's computer by the web browser while browsing a website, used for tracking and remembering information about the user. Sessions are temporary storage on the server that keeps track of user data across multiple requests during a single visit, typically expiring when the user closes the browser. Local storage is a web storage feature that allows websites to store data in the user's browser persistently, even after the browser is closed, with no expiration time.
Ques:- What is a single page application SPA
Right Answer:
A Single Page Application (SPA) is a web application that loads a single HTML page and dynamically updates the content as the user interacts with the app, without requiring a full page reload.
Ques:- What are JavaScript closures and how do they work
Right Answer:
JavaScript closures are functions that remember their outer scope even when the function is executed outside that scope. They work by capturing the variables from their surrounding environment, allowing access to those variables even after the outer function has finished executing. This is useful for data encapsulation and maintaining state in asynchronous programming.
Ques:- What is responsive design and how do you implement it
Right Answer:
Responsive design is an approach to web development that ensures a website looks and functions well on various devices and screen sizes. It is implemented using flexible grid layouts, fluid images, and CSS media queries to adapt the layout and content based on the device's screen size and orientation.
Ques:- What is the difference between inline inline block and block elements
Right Answer:
Block elements take up the full width available and start on a new line (e.g., `<div>`, `<h1>`). Inline elements only take up as much width as necessary and do not start on a new line (e.g., `<span>`, `<a>`). Inline-block elements are similar to inline elements but can have width and height set, and they respect margins and padding (e.g., `<img>`, `<button>`).
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