Here is data-binding in JSX (SolidJS and React): function HelloWorld() ` Data Bindingĭata binding is a declarative way to express how data is synchronized between a model and a user interface.Īll of the popular UI frameworks provide some form of data-binding, and their tutorials start with a data-binding example. MVVM is not a widely used term today, and it’s somewhat of a variation of the older term “data-binding”. That’s when the concept of “ model-view-viewmodel” (MVVM) became prevalent, with the then-groundbreaking Knockout and AngularJS frameworks, providing a JavaScript declarative layer that handled that complexity inside the library. In the early days of declarative frameworks, circa 2010, DOM APIs were a lot more bare and verbose, and writing web applications with imperative JavaScript required a lot of boilerplate code. We describe what the result needs to be, rather than what steps would take us there. Declarative Programmingĭeclarative programming is a paradigm in which logic is defined without specifying the control flow.
The frameworks themselves mention the words declarative, reactivity, and virtual DOM. Lit uses existing standards, with some added lightweight features.Svelte uses a compile-time approach to UIs.SolidJS follows React’s philosophy but uses a different technique.React makes building UIs easier with declarative views.To summarize what the frameworks say about their differentiators: “Building on top of the Web Components standards, Lit adds just … reactivity, declarative templates, and a handful of thoughtful features.”
#Smashing four upgrade cost code
Instead of using techniques like virtual DOM diffing, Svelte writes code that surgically updates the DOM when the state of your app changes.” “Svelte is a radical new approach to building user interfaces… a compile step that happens when you build your app. “Solid follows the same philosophy as React… It however has a completely different implementation that forgoes using a virtual DOM.” Declarative views make your code more predictable and easier to debug.” “React makes it painless to create interactive UIs. I chose four frameworks to look at: React, being the dominant one today, and three newer contenders that claim to do things differently from React. I will also look at the cost of using those frameworks. In this first part, I will deep dive into a few technical features common across frameworks, and how some of the different frameworks implement them. My objective is not to bash frameworks, but rather to understand the costs and benefits, to determine whether an alternative exists, and to see whether we can learn from it, even if we do decide to use a framework. I was interested to see what are the commonalities and differences between the frameworks, what the web platform has to offer as a leaner alternative, and whether it’s sufficient. It started after some frustration I had using React in some of my freelance projects, and with my recent, more intimate acquaintance with web standards as a specification editor. I have recently become very interested in comparing frameworks to vanilla JavaScript.
In this article, Noam Rosenthal dives deep into a few technical features that are common across frameworks, and explains how some of the different frameworks implement them and what they cost.
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