A stack is a data structure that follows the Last In First Out (LIFO) principle, which means that the last element added to the stack is the first one to be removed. Some common use cases for stacks include: Implementing undo/redo functionality: A s...
In JavaScript, recursion is a technique for iterating over an operation by having a function call itself repeatedly until it arrives at a result. It can be a useful alternative to using loops for certain tasks, especially when the number of iteration...
Scope The scope is the current context of execution in which values and expressions are "visible" or can be referenced. If a variable or expression is not in the current scope, it will not be available for use. Scopes can also be layered in a hierarc...
An array is a collection of data. It is widely used in all programming languages Including JavaScript. It is often used when we want to store list of elements and access them by a single variable. A pair of square brackets [] represents an array in J...
What is a CSS selector? CSS selectors are used to target the HTML elements on our web pages that we want to style. h1 { color: red; background-color: black; } p { color: aqua; } h1 is a CSS Selector , it targets the h1 element text color=red ,...
The position CSS property sets how an element is positioned in a document. position: static; The element is positioned according to the normal flow of the document. The top, right, bottom, left, and z-index properties have no effect. This is t...
