What if you require your own custom functionality? For example, an element showing the number of words on the page? There’s no HTML tag (yet).įrameworks such as React and Vue.js allow developers to create web components where the content, styling, and functionality can be defined in a single JavaScript file. Any number of elements can be placed inside other tags, and they won’t conflict. Styling and functionality are provided, although you can make modifications using various attributes and JavaScript API calls.

Given a URL, a viewer can use controls such as play, pause, move back, move forward, and adjust the volume. Check Out Our Video Guide to Web ComponentsĪ Web Component is a way to create an encapsulated, single-responsibility code block that can be reused on any page.Ĭonsider the HTML tag. These problems are in addition to those encountered by language runtimes, frameworks, databases, and other dependencies used on the server. Global styles and JavaScript objects can interfere with each other in unexpected ways.Related code can be split between three or more files, and.Browsers parse HTML, CSS, and JavaScript to render the page’s content, styles, and functionality. As long as you know what a module will output when given a set of inputs, you don’t necessarily need to understand how it achieved that goal.Īpplying modular concepts to a single programming language is straightforward, but web development requires a diverse mix of technologies. Modular code is encapsulated, so there’s less need to worry about the implementation. Projects benefit from using simple, independent modules which have a single responsibility.

The code has become unmanageable, the scope evolved, quick fixes applied on top of other fixes, and the structure collapsed under its weight of spaghetti code. We all have projects we’d instead not work on.

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