Tutorials covering the frameworks and libraries that shape how modern applications are built — Angular, React, Vue, and the ecosystem tools that surround them. Each chapter is standalone, built around real examples and verified facts.
A template is the HTML that a component renders. It looks like regular HTML, but Angular extends it with its own syntax — double curly braces, square brackets, parentheses, and asterisks — that connects the markup to the component’s data and behavior. Interpolation is the simplest of those extensions: it renders a component property as…
JSX looks like HTML, but it is JavaScript. The angle brackets and tag syntax are a convenience that the compiler transforms into function calls, and inside those tags you can embed any JavaScript expression using curly braces. This is the mechanism that makes JSX dynamic: it is how variables, function calls, arithmetic, ternaries, and method…
Tailwind CSS v4 represents a fundamental architectural shift: configuration moved from JavaScript to CSS, and every design token is now exposed as a native CSS variable. Where v3 required a tailwind.config.js file and a build step that generated static utility classes, v4 defines tokens directly in CSS using the @theme directive, and every value becomes…
Vue templates are not just static HTML. The framework’s core promise is reactivity: when your data changes, the page updates. But displaying dynamic text with {{ }} only covers part of the story. What about attributes like src, href, disabled, or class? You cannot use mustache interpolation inside an attribute value—<img src=”{{ imageUrl }}”> will…
Interpolation renders text. Bindings do everything else — they push values into the DOM, listen for events coming out of it, and (in the two-way case) keep a value and a form control in sync both ways. Angular has three binding directions: property binding ([prop]=”expr”) sends data from the class into the template, event binding…
A component is a JavaScript function that returns JSX. That is the entire definition. Where earlier React code used class components with render() methods and lifecycle hooks, modern React uses functions that accept props and return elements. The shift to functions was not cosmetic: it removed the this binding problem, eliminated the ceremony of class…
Tailwind’s spacing scale is the backbone of consistent layouts. Every padding, margin, gap, and space-between utility draws from a single configurable unit, and in v4 that unit is a CSS variable you can change at runtime. This means the same numeric class — p-4, m-2, gap-6 — always refers to the same physical distance, and…
Not every part of a user interface should appear all the time. A loading spinner shows only while data fetches. An error message appears only after something fails. An admin panel renders only for users with the right permissions. Vue handles all of these cases through its conditional rendering system, a set of directives that…
Structural directives change the shape of the DOM — they add, remove, or replace elements based on data. The three built-in ones are *ngIf (conditionally include), *ngFor (repeat for each item), and *ngSwitch (pick one of several branches). They’re called “structural” because they don’t just style an element — they decide whether it exists at…
A React application is a collection of components that reference each other. One component renders another, which renders a third, and the structure of the application is the structure of these references. The mechanism that connects them is the JavaScript module system: a component is exported from its file and imported into the files that…