Q1171. 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 ...
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Q1172. 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...
Q1173. 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 ...
Q1174. 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...
Q1175. 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...
Q1176. 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...
Q1177. 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...
Q1178. What is event propagation?
Event propagation in the DOM refers to how events move or flow through different elements on a webpage. When an event happens on an element, like a click, it can travel t...
Q1179. What is call stack in JavaScript?
The call stack in JavaScript is a data structure that stores information about the currently executing functions. When a function is called, a new frame is added to the t...
Q1180. What is the use of `setTimeOut()` in JavaScript?
`setTimeout()` is a built-in function in JavaScript that allows you to schedule a function to be executed after a specified amount of time has elapsed.