Q2601. What are promises in JavaScript?
Promises in JavaScript are a way of handling async operations. They help us write async code that looks and behaves like sync code, making it easier to read and maintain....
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Q2602. What is the difference between async/await and promises in JavaScript?
Both async/await and Promises are used to handle asynchronous operations in JavaScript. However, async/await is built on top of Promises which makes asynchronous code mor...
Q2603. How do you handle errors in JavaScript?
In JavaScript, errors can be handled using try-catch blocks. The code that might generate an error is enclosed in a try block, and if an error occurs, the catch block is ...
Q2604. What is NaN in JavaScript?
NaN (Not A Number) is a special value in JavaScript that represents a situation where a value is not a valid number. One important thing to note is that NaN is not equal ...
Q2605. What is the Document Object Model (DOM)?
The DOM (Document Object Model) is a programming interface that represents the structure and content of an HTML document as a tree-like structure of nodes. It allows deve...
Q2606. What is the difference between the DOM and HTML?
HTML is a markup language used to define the structure and content of a web page, while the DOM is an interface that represents that structure and content as a tree-like ...
Q2607. What is the difference between the DOMContentLoaded event and the load event?
The DOMContentLoaded event is fired when the initial HTML document has been completely loaded and parsed, while the load event is fired when all resources on the page, in...
Q2608. What is the difference between innerHTML and innerText?
The main difference between `innerText` and `innerHTML` in the DOM is that `innerText` returns only the visible text content of an element, excluding any HTML tags, while...
Q2609. What is the role of the Window object in the DOM?
The Window object in the DOM represents the browser window or tab that displays the web page. It provides methods and properties for controlling and manipulating the brow...
Q2610. What is a DOM node in JavaScript?
A node in the DOM is a fundamental unit that represents an element, attribute, or text content in a web page. Every node has a relationship with other nodes, such as a pa...