React refs hooks A React hook to dynamically set and get Refs. See full list on blog. Refs 转发 这些文档已经过时且不再更新，访问 zh-hans. This page describes the APIs for the built-in Hooks in React. Feb 2, 2024 · The Hooks in React Use Hook useRef in React With TypeScript Use React. This is the reason why you want to update your ref value in event handlers and effects and not during rendering (unless you are working on lazy initialization). Read more! See more examples below. Unlike React components defined as plain functions, a component returned by forwardRef is also able to receive a ref prop. Refs are great for that Jan 25, 2019 · The first rule of hooks states we can't call hooks (useRef) in a loop, but we can call createRef in a loop. Aug 26, 2025 · Discover how to effectively type the useRef hook in TypeScript for React applications that require imperative DOM manipulation. Feb 26, 2024 · Learn how to use refs to store the previous values of state and props in React since there React doesn’t have a built-in way to access this value. So, how can you create and use refs? React provides a useRef() hook that lets you do just that. useRef declares a ref. Table of Contents Orientation & Warm-Up (≈3 min) Tiny teaser — autofocus with useRef The three core truths you should remember right now When to reach for a ref (short checklist) Getting the Mental Model (≈6 min) Refs, State, and Plain . They let you use state and other React features without writing a class. Adding a ref to your component You can add a ref to your component by importing the useRef Hook from React: Jun 3, 2025 · Although React has moved towards functional components with React Hooks, it is still important to understand how to manage refs in class components, as they remain prevalent in many existing projects. You can access the current value of that ref through the ref. Prior to hooks, these capabilities were exclusive to class components, making hooks a game-changer for functional programming in React. use-merged-ref hooks memoizes refs with useCallback hook, but in some cases memoizing is not a valid strategy, for example, when you are working with a list of dynamic components React will complain that different number of hooks was called across two renders. Jan 5, 2021 · The forwardRef hooks allows React users to pass refs to child components. That’s all fine and May 26, 2025 · In React, Hooks are special functions that allow developers to use state and other features of React without the need for class components. They enable interaction with non-React systems, like browser APIs, aiding integration with external libraries and imperative logic. For example, here is a ref to the value 0: current: 0 // The value you passed to useRef. Sep 11, 2023 · Using multiple refs with hooks in React can be a bit challenging, especially when working with arrays of elements. The useRef Hook allows you to persist values between renders. Your ref1 is not a ref to the Comp1 component. map callback to map arr to an array of refs that we create with React. Start using @react-hook/merged-ref in your project by running `npm i @react-hook/merged-ref`. This page lists all built-in Hooks in React. With a callback ref, you can access the DOM node on every render without the use of additional hooks: import React, { useRef } from 'react'; const TextInput = () => { const inputRef = useRef(null); Merging React Refs TL;DR — useRef and createRef are not the only API calls you might be interested in 👨🔬 Let’s imagine — you are opening a React Hooks API Reference, looking for the … Mar 28, 2023 · Looking into why we need access to DOM in React, how Refs can help with that, what are useRef, forwardRef and useImperativeHandle hooks, and how to use them properly. Key concepts, Hook useRef, use cases and examples. Contribute to yuchi/react-use-refs development by creating an account on GitHub. The ref can be created and referenced with useRef or createRef and then passed in a parent component. Read about refs in Referencing Values with Refs. In this blog, we'll look at React useRef in class component and compare it with useRef in functional components. Jul 23, 2025 · React refs store non-rendering data like DOM node references or timeout IDs, without triggering re-renders. current. In react-dom we’re adding <form> Actions to manage forms automatically and useFormStatus to support the common cases for Actions in forms. While React Nov 27, 2019 · Learn how to use multiple refs for an array of elements with React Hooks in this comprehensive guide. Where should you update a useRef () value? Updating a ref value is considered a side effect. The useRef Hook is a powerful tool that offers immense flexibility and capabilities, but developers often misunderstand Apr 16, 2025 · React, the popular JavaScript library for building user interfaces, offers a versatile approach to managing components and their state. Caveats createRef always returns a different object. Jul 28, 2020 · This question exists but it didn't give a lot of data or real world explanation: What are Refs in React or React-Native and what is the importance of using them Let's say i want to integrate to 3rd Nov 7, 2024 · Hooks are functions that let you “hook into” React state and lifecycle features from function components. current property. Latest version: 1. The array of refs (from createRef) will not trigger renders and stay in place between renders because it's safely stored in the . We will also discuss React Hooks’ purposes and which Hooks help us get the Refs of the element. You can either use the built-in Hooks or combine them to build your own. useActionState to handle common cases for Actions. We can create a ref variable using React. Mar 1, 2020 · 87 2021 answer: This article explains the issue with using refs along with useEffect: Ref objects inside useEffect Hooks: The useRef hook can be a trap for your custom hook, if you combine it with a useEffect that skips rendering. Nov 25, 2024 · Learn how to properly implement and use refs in React with TypeScript to manipulate DOM elements, persist values, and improve your component performance. Dec 8, 2018 · 20 So I decidet to rewrite my React Class Component into React Hook Component, And in my Class Component I did <canvas ref='canvas'></canvas> This approach didn't work anymore. forwardRef((props, ref) => {}) Parameters: It takes a function with props and ref arguments. But what about functions that act as components? Recently, the React team released Hooks to pair them with the same features class components have. It can be used to store a mutable value that does not cause a re-render when updated. One important concept to grok with React is the React virtual DOM from the real browser DOM. Dec 10, 2023 · In our previous post, we learned how to use the usePrevious () hook to determine if an element is in Tagged with react, javascript, webdev, tutorial. Dec 9, 2024 · Learn how to use React's useRef Hook for DOM manipulation, performance optimization, and more in this in-depth guide. This gives us the ability to modify or change that element. Article by Ignacio Senior ReactJS Developer Ex-The Walt Disney Studios React Hooks Reference Simplified: Unifying Multiple Refs with the useMergedRef Hook in ReactJS This introduction highlights the importance of handling different user interactions, including long press events, in providing a more intuitive user experience in web development. Apr 25, 2020 · React offers us the React useRef Hook which is the status quo API when using refs in React function components. Caveats In Strict Mode, React will call your render function twice in order to help you find accidental impurities. Here’s a guide… Learn to manage and combine React refs efficiently with the useCombinedRef hook. createRef . We all know the famous hooks like useState and useEffect but useRef is more reserved. Specifically, the returned object has a current property which can hold any modifiable value for us: useMergeRefs useMergeRefs is a custom hook used to merge several react refs into a single one. For example, you might want to control a non-React component based on the React state, set up a server connection, or send an analytics log when a component appears on the screen. Hooks allow functions to have access to state and other React features without using classes. Mar 14, 2021 · We call the useRef hook with the arr. Dec 5, 2024 · Building on top of Actions, React 19 introduces useOptimistic to manage optimistic updates, and a new hook React. Aug 7, 2023 · In this article we are going to learn about react Hooks, What are the types of hooks, built-in hooks, how you can combine multiple hooks to create your own hooks If you are looking for a React Native Chat SDK to build in app chat messaging application, you can consider React hook that merges react refs into a single memoized function. If you want to bind ref to component, you need to use class components. You may also find useful information in the frequently asked questions section. Aug 2, 2022 · React hooks, stable references, and performance By Chris Morgan - Software Engineer Consensus says that you should only memoize React components when the benefits outweigh the allegedly high cost A React hook to dynamically set and get Refs. If you pass the ref object to React as a ref attribute to a JSX node, React will set its current property. createRef(), inputRef = React. While DOM manipulation is the most common use case for refs, the useRef Hook can be used for storing other things outside React, like timer IDs. Syntax: const func = React. We’ll also cover some use cases where refs can be really useful. Hook to create multiple refs in a single call. One of the main differences is that, with refs, you don't need identifiers like IDs and classes to reference elements. This blog walks through using the useRef hook with multiple inputs Refs (also References/Referenzen) erlauben es in React, direkt auf DOM-Elemente zuzugreifen, die während des Render-Prozesses erzeugt wurden. callback Jan 15, 2024 · Greetings, React enthusiasts! Refs in React are a powerful tool often misunderstood and misused. One powerful feature in React is the ability to pass refs, which provide a way to access and manipulate DOM elements or React components directly. useRef useRef is a React Hook that lets you reference a value that’s not needed for rendering. createRef() method and useRef Hook in React to simplify creating refs and interact with the HTML DOM. Effects let you run some code after rendering so that you can synchronize your component with some system outside of React. From managing focus in forms to working with third-party libraries and animations, these features provide developers with the flexibility to implement advanced behaviors in their applications. From the React Refs and the useRef Hook are essential tools in React for handling scenarios that require direct DOM manipulation or mutable values. Sep 17, 2023 · React Hook Form is built upon uncontrolled components and leverages refs to manage form state. useCallback is a React Hook that lets you cache a function definition between re-renders. The lints cover both fundamental React patterns (exhaustive-deps and rules-of-hooks) and issues flagged by React Compiler. However, by combining the useRef and useEffect hooks, we can overcome this challenge and achieve the desired behavior. This technique is Forwarding Ref. In a sense, they’re React’s way of leaning into functions because, before them, we’d have to write them in a component and, while components have proven to be powerful and functional in and of themselves, they have to render something on the front end. A React hook for merging multiple refs into one ref. useImperativeHandle useImperativeHandle is a React Hook that lets you customize the handle exposed as a ref. React docs Aug 8, 2021 · Tip If setCounter was passed as a prop from a higher component, you'd have to include it in the dependency array because React doesn't know where it comes from. They don’t fundamentally change how React works, and your knowledge of components, props, and top-down data flow is just as relevant. buttonRef. Mar 24, 2024 · Welcome to an in-depth tutorial where we explore the practical use of React’s useRef and forwardRef. Aug 17, 2025 · React 19 useRef — Deep Dive useRef looks tiny on the surface, but used well it prevents bugs, speeds things up, and makes imperative integrations sane. Returns createRef returns an object with a single property: current: Initially, it’s set to the null. Contribute to fitzmode/use-dynamic-refs development by creating an account on GitHub. Similarly to state, refs remain between renders. Introduction In React, managing focus, reading or manipulating the DOM directly is generally not recommended as it goes against Jan 18, 2019 · Hooks make it possible to organize logic in components, making them tiny and reusable without writing a class. However, with the introduction of hooks, the useRef hook has expanded the definition of "refs". Oct 12, 2019 · There are createRef, useRef but a very important something is missing. webdevsimplified. The problem with refs and useEffect The useRef hook can be a trap for your custom hook, if you combine it with a useEffect that skips rendering. May 2, 2024 · From fundamental approaches using refs and element IDs to advanced strategies employing React Scroll library and custom hooks, we'll explore a range of methods to achieve precise scrolling control. dev 查看新的 React 文档。 这些文档使用新的 React 语法，并带有在线的运行示例： Manipulating the DOM with Refs forwardRef The new docs will soon replace this site, which will be archived. Dive into practical examples and tips in this essential guide. React 19 introduces a simpler way to work with refs in components. createRef(), otherOpts }. You can hold any value in it Mar 28, 2025 · React provides two common ways to manage refs: useRef and callback refs. Provide feedback. The useRef Hook returns us a mutable object which stays intact over the lifetime of a React component. Import import { useMergeRefs } from '@chakra-ui/react' Sep 29, 2024 · Understanding Refs in ReactJS: A Practical Guide with Code In React, refs (short for references) provide a way to access DOM elements or React elements created in the render method. This slightly contrived example renders a button that focuses an input when it's clicked: Jul 24, 2023 · In conclusion, the forwardRef hook in React is a powerful tool that facilitates direct communication between parent and child components, particularly with custom components or complex hierarchies. Want to focus an input in a child component? You had to wrap it in `forwardRef`, which Feb 11, 2019 · My hook wasn’t handling any of these cases. Same as exported ref from useAnotherHook. In this case, I have to set both refs let inputRef = useRef(null); const onClick = input => Apr 2, 2025 · React Corporate Workshops, Training, and ConsultingMutating the ref doesn't cause a re-render. However, with Ref Hooks, functional components can also take advantage of this capability, enhancing flexibility and simplifying code. Among these hooks, the useRef Hook stands out as a valuable tool for managing values and accessing Document Object Model (DOM) elements. I'm having trouble understanding how to use refs so as to get static typing and intellisense with respect to the react nodes referenced by the refs. Today, we'll be walking through two definitions of refs: A mutable data property to persist data across renders A reference to DOM elements We'll Mar 15, 2023 · T he useImperativeHandle hook is a powerful feature in React that allows child components to expose certain functions or properties to parent components. It can be used to access a DOM element directly. 8. When faced with the need to store data in your React application, the first question that comes to mind is: "Will the Sep 24, 2024 · Debugging refs inside hooks in React can sometimes be tricky, but there are a few strategies you can use to make it easier. Apr 7, 2025 · Learn how to use React useRef for managing references, avoiding re-renders, and applying best practices in functional components. Apr 11, 2024 · In this article, we'll delve into a thorough comparison of React state and refs, exploring their suitability for specific scenarios. This feature is especially useful when working with child components, allowing for efficient communication and Apr 27, 2025 · Stop Fighting Lint Warnings: Why Refs Don’t Belong in useEffect Dependencies Getting frustrated with React lint warnings about your useEffect hooks? React lint warnings about useEffect are a … Feb 27, 2025 · Refs let you access DOM elements and component instances without triggering re-renders. Let Hi guys, today we are going to discuss What is the ForwardRef and how we can use it with Functional components basically with React Hooks. Sep 14, 2022 · One of them is React Refs which includes useRef and forwardRef. Ref Hooks Refs let a component hold some information that isn’t used for rendering, like a DOM node or a timeout ID. But, you might find yourself in a situation where you want a value persisted over time but setting it doesn't cause a re-render. Mar 13, 2021 · Consider I have a custom hook that uses one or more refs to DOM elements, I see two distinct ways how to write/use a hook like that (and I know there are probably even more nuances – e. In React, we used to pass the data from parent component to child component through props, right. focus() to focus on the first element when App mounts. Real examples inside! Jun 20, 2020 · Also, according to React Docs, refs are useful to trigger imperative animations and to integrate with third-party DOM libraries. Etwa, wenn die Position oder die Größe eines Elements benötigt wird, um Jan 9, 2021 · Learn how to use the useRef hook to get the most out of React's functional components. Apr 24, 2021 · I'm managing my forms using react-hook-form. That's why your ref2. Refs are an “escape hatch” from the React paradigm. Auch wenn das in React in den meisten Fällen gar nicht notwendig ist, gibt es einige Situationen, in denen man nicht drumherum kommt, direkt auf die DOM-Elemente zuzugreifen. You could default the options in the hook method signature { ref = React. Jul 23, 2025 · Prerequisites React JS React JS Refs Method 1: Using React. If you use a ref in your effect callback, shouldn't it be included in the dependencies? Why refs are a special exception to the rule! Aug 28, 2019 · What is a ref in React? When not to use refs How to create refs using createRef () Using refs with components More control with callback refs Using refs inside functional components How to use refs with hooks Typing refs with TypeScript Conclusion Feb 26, 2025 · Struggling to manage focus across multiple input fields in React? Need a way to track several elements without unnecessary re-renders? Using a React array of refs can help. createRef(); Method 2: Using useRef () hook We cannot use the ref attribute in the functional components because they don't have the Mar 18, 2024 · Currently the code for the useIMask hook creates these refs for the hook, and doesn't allow you to pass in refs. This approach allows us to avoid React state management and minimize unnecessary rendering issues. The need to use forwardRef is now a thing of the past in many cases, making components cleaner and easier to maintain. It actually contains an object that you Feb 11, 2025 · 🚀 React 19: No More `forwardRef` — Refs Just Got Simpler! Refs in React used to be a little awkward. Jan 10, 2021 · Hello everyone! 👋 Lately, I have been working a bit with refs in functional components and decided Tagged with react, javascript. but I also need to manage an element's click event. Mar 16, 2022 · I'm trying to use the react ref with a simple form input defined with react-hook-form library like below (based on the official docs). createRef () and attach it to the React element by using the ref attribute of the element. react. createRef() in React With TypeScript This tutorial provides guidelines about using Refs in React with TypeScript. Let’s dive into both approaches and explore their differences with practical examples and performance insights. With recent features such as Context and Hooks, the whole ecosystem has become more complete. If you’re new to Hooks, you might want to check out the overview first. They provide a more direct API to React concepts like props, state, context, refs, and lifecycle. It won't trigger the hook though, so it's safe to do so. Feb 26, 2025 · Learn how to effectively use React multiple refs to enhance your components. My code is as f Some components need to synchronize with external systems. In this article, we’ll explore what refs are, how they work, and when you might want to use them in your React applications. Returns forwardRef returns a React component that you can render in JSX. (more) This means that you can't bind your refs to functional components. It’s time to unravel the mysteries and… This plugin helps you catch violations of React’s rules at build time, ensuring your components and hooks follow React’s rules for correctness and performance. This is the tradeoff between "refs as state" vs useState. The first step is to import the hook from React: import { useRef } from Jul 27, 2025 · Before hooks, refs were primarily used in class components. Jul 3, 2021 · The first hook on the other hand, returns a reference to the ref object, so if you check the current after React set the ref's current to point to the text-field element, you will get the actual element. Jul 23, 2025 · React forwardRef allows to exposure of a DOM node to the Parent Component. g. Refs Refs can be quite difficult to wrap one's head around, and it probably deserves a whole article by itself. First, let’s see what React Hooks are and why they are used. Built-in React Hooks Hooks let you use different React features from your components. Nevertheless, you can often come across these two hooks in React applications. Jan 21, 2020 · This way, at any time in the lifecycle of the component, we can access the actual HTML element at this. Master DOM access, timers, previous values, and performance tips. Forwarding Refs with forwardRef: Sometimes, you may need to pass Feb 19, 2021 · What are Refs? React Refs allow us to reference a DOM element or a class component from within a parent component. Jun 1, 2023 · In this new React world, hooks are here to stay, so it's best to learn them! In this tutorial I demonstrate the useRef React hook, and I explain it very simply and in a way that is easy to understand. Learn best practices, common pitfalls, and practical examples, such as controlling the focus state of an input element. Basic Hooks useState useEffect useContext Additional Hooks Sep 1, 2024 · Refs in React are a powerful feature that don’t always get the spotlight they deserve. Inside your component, call the useRef Hook and pass the initial value that you want to reference as the only argument. Oct 11, 2024 · Section 5: Advanced Use Cases Dive into more advanced examples like integrating refs with React hooks or combining multiple refs. current created by useRef. Return Value: This function returns a JSX Element. This provides a more explicit way for May 18, 2023 · Callback Refs Callback refs provide an alternative approach to working with refs, eliminating the need for the useEffect and useRef Hooks. You can later set it to something else. Sep 2, 2024 · Refs (short for “references”) in React are used to store references to DOM elements or React component instances, enabling developers to interact with these elements directly. Tagged with react, webdev, ref, hooks. Feb 11, 2019 · Instead, always use Hooks at the top level of your React function. It’s equivalent to Feb 20, 2025 · With React 19, working with refs has become simpler and more intuitive. current is null. How should I use refs then? In documentation only said that refs are still work. This approach lets you store references to multiple elements, making tasks like focus management, form validation, and custom interactions much easier. They are useful when you need to work with non-React systems, such as the built-in browser APIs. useRef and Forwarding Refs Part 1 Refs are an absolute must-learn for React beginners. Nov 19, 2020 · Refs In React Through The useRef Hook ReactJS being a modern frontend library took it further by providing a Ref API to access its element, and even a step further through the useRef hook for a functional component. Jun 17, 2019 · The React API is fairly simple, even though it has been growing bigger. Oct 16, 2019 · React documentation says: You may not use the ref attribute on function components because they don’t have instances. Short for “reference”, refs are a way to access underlying DOM elements in a React component Feb 26, 2025 · Basic article on references in React. createRef () It was introduced in React 16. Then we have a useEffect callback that calls refs. While they may seem similar at first glance, each has unique properties that make it more suitable for different scenarios. By following this rule, you ensure that Hooks are called in the same order each time a component renders. May 5, 2019 · How to add "refs" dynamically with react hooks? Asked 6 years, 6 months ago Modified 1 year, 1 month ago Viewed 73k times Oct 9, 2019 · How to use React refs with useEffect hooks After using React for a few years and getting used to writing components thinking in classes and lifecycle methods, the new React hooks are completely … Apr 11, 2021 · Learn the basics of how to use React Refs and React Forward Refs on your next project. If you want to set state and cause a re-render then by all means just use useState. Using a seemingly simple example of attaching a scroll listener to a div, we dive into React refs and React hooks. First, you'll need to wrap your child component in the forwardRef function in order to access the ref object that is assigned using the ref prop. Hooks are a more direct way to use the React features you already know — such as state, lifecycle, context, and refs. Here is the code excerpt I'm dealing with: Nov 15, 2022 · Learn how to use the React. Your first instinct will be to add ref. Parameters createRef takes no parameters. Refs in React are a powerful tool and have become even more important with the introduction of stateful functional components that use hooks. Simplify ref handling, improve component composition, and boost your React workflow. Yet, some concepts are usually a source of struggle for beginners and even experienced developers. Sep 19, 2024 · Plus the startTransition method you get out of a useTransition hook - that’s also stable, just not included in that source comment. Nov 15, 2022 · Learn how to use the React. Real examples inside! Jul 23, 2025 · React forwardRef allows to exposure of a DOM node to the Parent Component. The useRef hook is a useful tool in React for accessing DOM elements and storing mutable values. current to the second argument of useEffect, so it will update once the ref May 2, 2022 · Programming terminology can be rather confusing. What are Refs in React? But before starting, the question comes to mind is What is refs in React. The first time I'd heard about "React Refs", it was in the context of getting a reference to a DOM node. Aug 2, 2022 · React hooks, stable references, and performance By Chris Morgan - Software Engineer Consensus says that you should only memoize React components when the benefits outweigh the allegedly high cost Apr 25, 2021 · When I pass ref to useCustomHook, inside the hook, the ref is considered as prop instead so the warning is reported from eslint. Unlike with state, updating a ref does not re-render your component. Refs are like state variables that don’t trigger re-renders when you set them. By the end of this post, you'll understand how to effectively use these hooks to control and manipulate DOM elements and component instances in a React application. 2 days ago · Learn how to use React’s useRef hook with clear explanations and real-world examples. 2, last published: 4 years ago. Nov 19, 2015 · I'm using Typescript with React. While uncontrolled components enable direct access to DOM element values via refs, they typically don’t track values in real-time. Thank you! Hooks are a new addition in React 16. As part of my React All The Hooks series, it’s important that we make a stop-by on a very important hook: React useRef. You’ll learn when to use refs, how they work, and best practices for keeping your code clean and fast. May 21, 2024 · Understand the best practices for using react refs for building cleaner and high-performing react applications in 2024. current[0]. We can now import useRef for refs inside function components as well. Syntax: React. Jul 25, 2024 · You might not find these Hooks in React, but you can create your own Hooks for your application’s needs. Jan 17, 2023 · To use refs in functional components, you'll need to use the forwardRef, useRef, and useImperativeHandle hooks from the React library. 3. One of them is the Refs API. com But in React, you use refs to access elements in the DOM. Jan 13, 2025 · Learn React Hooks best practices and advanced use cases with this cheat sheet, featuring useState, useEffect, useReducer, and more. It is a method that lets React forward the React refs to the child component. Apr 20, 2025 · Learn how React 19 simplifies working with refs and async data with the new use() hook and ref-as-prop approach. Honestly, this is one of the things that annoys me most about hooks in React, which I touched on in my note about Remix: the useEffect and useMemo hooks rely heavily on the idea of object identity and stability. vnjov ijmd ewegl dorpd ffnzmh pbhxrq wxfo sjalptxo cxlhh zctq kxfblhb nfg trchx ncwmkyv mkxa