![]() React.js creates a cache of the data structure in memory, computes the resulting differences, and then efficiently updates the browser DOM displayed, which we call the reconciliation process. ![]() In React, props and state are two types of “model” data, plain JavaScript objects.Ī notable feature of React.js is the virtual Document Object Model, or shortly called the DOM. Class components can accept props if needed. They are more complex than functional components, including constructors, life-cycle methods, state management, etc. Class components are used with ES6 class syntax. They do not have state or lifecycle methods. A functional component is a function that takes props and returns the JSX code to render to the DOM tree. We can list several types of components, including two main ones, functional and class. Each component has several lifecycle methods that you can override so that your code runs at a specific time in your program. ![]() React allows you to define components as classes or functions through properly implemented methods and inheritance. They are used for the same use as JavaScript functions, but run in isolation and return HTML. The components are autonomous, reusable bits of code. Before we move on to the pros and cons of React.js, let’s focus on notable features of the technology. ![]()
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