React is the most prominent JavaScript library for building user interfaces. It was developed by Meta in 2011. It is widely known for its reusability and speed. React offers some outstanding features like state that make it the foremost adopted library for frontend development. What is a state ...
Declarative Nature: JSX is a declarative syntax, which means developers describe what the user interface should look like based on the current state of the application rather than imperatively defining each step to render the UI. This declarative approach simplifies UI development and enables React JS...
The Context API is a built-in feature in React that allows you to manage and share global state across components without having to pass props down through multiple levels. This is useful when dealing with state that is needed by many components in the application. Example: importReact,{useCon...
First we have a React component, this is the one that ReactDOM will render (see the last line in the example).We have the constructor method so we can set the initial state - in this case an array of todos, each of which has title, done, and notes attributes. (Typically this kind...
Let's say that you have a car, a car has many moving parts and eventually things break. And the same thing could happen if you have too much state in your react, that location and for components that don't need any state. We have two types of components stateful and stateless componen...
What exactly is Render in React, how can we force a class or functional component to re-render, and can it be done without calling setState? The short answer to the question of if you can force a React component to render (and without calling setState) is yes, you can. However, befo...
It introduced the concept of a virtual DOM, which is a lightweight representation of the actual DOM. When the state of a React component changes, React compares the virtual DOM with the previous state and updates only the parts of the DOM that have changed. This approach improves performance...
InApp.jswe have a very simple application that has two input fields. It saves the provided values in the state of the application. When the user clicks on theLoginbutton the handler gets executed. Unfortunately given that this is a demo application and that our server endpoint, in reality,...
React `useReducer()` hook is a powerful tool for managing states in a more structured and predictable manner. Reducer in React is particularly useful when dealing with complex state logic that involves multiple actions or when you need to pass state and action dispatching functions to child compon...
a button raises a corresponding event (ON_pressedorOFF_pressed) upon which the machine reacts with a state change and corresponding outputs. The output of the state machine is simply the brightness level. As in Moore machines only states produce outputs, we need one dedicated state per ...