Arrow functions in JavaScript provide a concise syntax for writing functions. They are part of the ECMAScript 2015 (ES6) specification. They offer several advantages: more compact syntax, lexical this binding, and no need for the function keyword. However, they have important limitations: they don’t have their own bindings to this, arguments, or super, and should…
The display property is one of the most important CSS properties. It controls how an element is displayed on a webpage and how it behaves in the document flow. Overview of display Values Value Description In Flow? Dimensions? Line Breaks? inline Flows with text ✅ Yes ❌ No ❌ No block Starts on new line,…
The <head> element is a container for metadata and other information about an HTML document. This content is not displayed directly on the webpage but is crucial for the page’s functionality, SEO, styling, and behavior. What is the head Element? The <head> element sits between the <!DOCTYPE html> declaration and the <body> element. It contains…
The call stack is a fundamental concept in JavaScript (and most programming languages). It’s how the JavaScript engine keeps track of which function is currently running and where to return when it finishes. A Quick Look at the Example What happens when calculate() is called: a. What is the Call Stack? The call stack is…
These three properties are the foundation of the CSS Box Model. They control the spacing around elements (margin), the spacing inside elements (padding), and the outline of elements (border). Overview of the Three Properties Property Description Where It Applies margin Space outside the border Between the element and its neighbors padding Space inside the border…
Semantic elements are HTML elements that carry meaning about the content they contain. They describe the purpose of the content rather than just its appearance, making web pages more accessible, SEO-friendly, and maintainable. Semantic vs. Non-Semantic Elements Type Description Examples Semantic Elements with meaning that describe content structure <header>, <nav>, <main>, <article>, <section>, <aside>, <footer>,…
A closure is a function that retains access to its lexical scope, even when the function is executed outside of that scope. This means a closure can “remember” and access variables from the environment in which it was created — even after that environment has finished executing. A Quick Look at the Examples a. Closure…
CSS Grid is a two-dimensional layout system introduced in CSS3. It provides a powerful and flexible way to create complex, responsive layouts by defining rows and columns. What is CSS Grid? CSS Grid allows you to arrange elements into rows and columns, giving you precise control over the layout of your web page. Unlike Flexbox…
These elements are used to display technical content, code, keyboard inputs, variables, and sample output in a semantically meaningful way. They are essential for technical documentation, programming tutorials, and educational content. Overview of Technical Elements Element Purpose Typical Use <code> Represents a fragment of computer code Inline code snippets, programming examples <var> Represents a variable…
Recursion is a programming technique where a function calls itself directly or indirectly to solve smaller instances of the same problem. It’s a powerful approach for problems that can be broken down into smaller, similar sub-problems. A Quick Look at the Examples a. Recursion Recursion is a programming technique where a function calls itself directly…
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