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The React useState Hook allows us to track state in a function component. State generally refers to data or properties that need to be tracking in an application. Import useState. To use the useState Hook, we first need to import it into our component. Example: Get your own React.js Server. At the top of your component, import the useState Hook.
useState is a React Hook that lets you add a state variable to your component. const [state, setState] = useState(initialState) Reference. useState(initialState) set functions, like setSomething(nextState) Usage. Adding state to a component. Updating state based on the previous state. Updating objects and arrays in state.
Sep 25, 2024 · The useState hook is a powerful addition to React, introduced in version 16.8. It allows you to manage state within functional components without the need for class-based components. In this useState Hooks article, we’ll learn about useState, its syntax, usage and best practices with examples. Table of Content.
Jun 9, 2022 · The useState hook is a special function that takes the initial state as an argument and returns an array of two entries. UseState encapsulate only singular value from the state, for multiple state need to have useState calls. Syntax: The first element is the initial state and the second one is a function that is used for updating the state.
May 8, 2023 · The useState() hook can conveniently hold strings, arrays, numbers, objects and much more. In this article, we are going to learn about the useState() hook and demonstrate its use with three different examples: a button with conditional rendering, form handling, and the famous counter.
State: A Component’s Memory. useState. Hooks are a new addition in React 16.8. They let you use state and other React features without writing a class. The introduction page used this example to get familiar with Hooks:
Feb 7, 2023 · useState is React Hook that allows you to add state to a functional component. It returns an array with two values: the current state and a function to update it.
Jun 30, 2022 · useState, in particular, lets you add React state to functional components (components that are declared as a function, and not as a class). In truth, state is kept inside the hook, but is accessible from the component where you "call" the hook. The Rules of React Hooks.
In this lesson, we'll cover React state, how it works, and how we can build a simple dice app that uses the useState React Hook.
Nov 13, 2019 · Call useState() hook to enable state in a functional component. The first argument of the useState(initialValue) is the state's initial value. [state, setState] = useState(initialValue) returns an array of 2 items: the state value and a state updater function.
