React focus events. This is similar to the :focus pseudo class in CSS.

React focus events Jul 23, 2025 · The onFocus event in React is triggered when an element receives focus, meaning it becomes the active element that can accept user input. • onKeyDown is called when a key is depressed • onKeyPress is called after The relatedTarget property returns the element related to the element that triggered the focus/blur event. This event is important for tracking when a user moves the focus away from an element, such as an input field or a button. This is useful for cases such as adding event listeners, for fetching data with an API call when a screen becomes focused, or any other action that needs to happen once the screen comes into view. Mar 29, 2022 · This will also test that the element in question can even receive keyboard events. It does not trigger the UI (browser) behaviour of the element that received the event. Also, learn the difference between React onFocus and onClick events. React redraws the component every time you set the state, meaning that the component loses focus. Usage May 11, 2018 · I can not figure out how to use the Focus event with React and Typescript: private onFocus(event: FocusEvent) { } &lt;div tabIndex={0} onFocus={this. One of the commonly used events for managing focus behaviour is the onBlur event. Convenience methods for firing DOM events. g: Set ref="nameInput" on my input field in the render Jun 3, 2016 · I've got a form, in which I want to handle change event on text inputs, but React onChange triggering on key down (opposite to native JS, that triggers change event when an input field is out of focus). setEventListenerfunction that supplies you the callback that should be fired when the window is focused and allows you to set up your own events. These changes typically occur due to user interaction. FocusEvent<HTMLInputElement> FocusEvent Object In React, when one of these focus events happens an event object (which is commonly referred to as e) is provided to the event handler method. Short answer: add tabindex="0" attribute to an element that should appear in event. It should open the options when the components get focus. This also doesn't provide a way to perform a cleanup function when the screen becomes unfocused. Both of these events work on all elements in the React DOM but are most often used with form. This includes HTML form elements, as well as any element with a tabIndex property. I want to get a callback whenever my tab comes in focus or is hidden. To simulate this behavior you can simply replace fireEvent with imperative focus: The <input> component in React is used to render input elements, supporting common element props and controlled components with value and onChange props. Manipulating the DOM with Refs React automatically updates the DOM to match your render output, so your components won’t often need to manipulate it. css"; export default function App () { const ref = useRef (); function In this article, we would like to show you focus events in React. Navigation events You can listen to various events emitted by React Navigation to get notified of certain events, and in some cases, override the default action. onInput: Fires when the user provides input. There are two focus events: onFocus onBlur Note: focus events work on all elements in the Reac Jul 23, 2025 · In React, handling user interactions efficiently is important for building responsive and dynamic applications. Sep 29, 2016 · So if I assign onFocus callback to <input /> and then call method focus () on actual element, react won't fire onFocus event and related callback won't be called. onFocus: Fires when Aug 24, 2017 · This cheatsheet contains live examples of a number of common React events. When input1(with autocomplete functionality) is in focus, clicking the Tab button In rare circumstances, you may want to manage your own window focus events that trigger React Query to revalidate. The event object has the type like so: event: React. For example, a menu Apr 18, 2018 · I have a website in ReactJS. My intentions: I would like to call a function that, when activated by a click, it will . I came across the Page Visibility API for this but I'm not able to figure out how to use it in Rea need something like event. useFocusWithin handles focus interactions for an element and its descendants. For onfocus and onfocusin events, the related element is the element that LOST focus. onSubmit: Fires when a form is submitted. This object holds event-related data. Check out src/event-map. # The easiest way to find the type of an event The easiest way for you to find out what the type of an event is, is to write the event handler inline and hover over the event parameter in the function. The onfocus event occurs when an element gains focus, often used in form validation or user input scenarios. Here are the elements that can gain focus by default: <a> elements The new pointer events spec helps simplify handling events across mouse, touch, and stylus/pen interaction models. To handle focus events on only the target element, and not descendants, see useFocus. target: When an event is dispatched on an element, the event has the subjected element on a property called target. And the problem is that your specific div can't gain a focus because browser thinks that this element is not a button/field or some kind of a control element. focus () method tells the browser which element is being acted on What is the TypeScript definition for the onFocus event in React? The right interface for onFocus is FocusEvent Please continue reading below to see how to use it or read my guide on using React events with TypeScript. Quill is a free, open source WYSIWYG editor built for the modern web. Sep 1, 2023 · The FocusEvent interface represents focus-related events, including focus, blur, focusin, and focusout. The event object contains certain extra properties for focus events, like relatedTarget, and inherits features from UIEvent, such as detail and view. target. Unlike React's built-in focus events, useFocus does not fire focus events for child elements of the target. It is passed as an attribute in <input> elements, and can be used to perform actions when the cursor leaves the input box. You can use the currentTarget and relatedTarget to differentiate if the focusing or blurring events originated from outside of the parent element. setEventListener, the previously set handler is removed Jul 28, 2025 · Summary of How to Focus TextInput in React Native Programmatically and with Keyboard Management Mastering how to focus TextInput in React Native empowers you to improve your app’s responsiveness and usability through: Using refs and the focus() method to programmatically trigger focus. focus () in React Asked 7 years, 3 months ago Modified 7 years, 3 months ago Viewed 17k times useFocus handles focus interactions for an element. Jun 3, 2015 · 0 Depending on what you want to do, you can use onFocus (React 17) or onBlur (React 16) to implement the functionality that you want when these things are in focus. The two events differ in that focusout bubbles, while blur does not. This can be caused by clicking on something else or by using the keyboard to move the keyboard In this tutorial, you will learn about the JavaScript focus events that keep track of the elements that users focus on. Sep 28, 2022 · In this guide, learn how to set focus on an element after JavaScript's React component renders it, using functional and class components. However, we could have been more specific when typing the event. React Navigation provides a hook that runs an effect when the screen comes into focus and cleans it up when it goes out of focus. Since it's an event, your listener won't be called if the screen was already focused when you subscribed to the event. When the focus is lost, the onFocusOut event is triggered. May 14, 2021 · In React, the onFocus event is called when the element receives focus and onBlur event is called when focus has left the element. React Aria uses pointer events where available with fallbacks on older devices to mouse and touch events. Feb 9, 2018 · Has asked in #1273 by @benbro @abramz please open a new issue with your explanation why selection-change event isn't enough to detect focus and blur with all the info requested in the issue templat Sep 8, 2019 · React . You can also go to the search page 🔍 to find another event. It is similar to the HTML DOM onfocus event but uses the camelCase convention in React. Jul 29, 2024 · Explore the depths of onFocusCapture in React and learn how to harness the power of focus events for creating seamless user experiences. Events are the standard way that elements communicate changes. There are 4 types of native focus events, focus/blur which do not bubble and focusin/focusout which bubble. Focus is "within" an element when either the element itself or a descendant element has focus. Entering the field can be handled by using Jun 18, 2019 · I'm currently trying to create my own dropdown component using React. Apr 7, 2024 · To focus input when another element is clicked in React, set the `ref` prop on the input element and set the `onClick` prop on the other element. Dec 5, 2024 · In React, Synthetic Event is a cross-browser wrapper that provides consistency and efficiency in event handling by encapsulating the native event of the browser. Keyboard Keyboard events can be used with any focusable element. To handle focus events on descendants of an element, see useFocusWithin. This matches DOM behavior where focus events do not bubble. Usage Is there an event for leaving the field or loosing focus in the Material UI TextField? I need two events, one for entering and one for leaving the field. Jun 22, 2018 · React input focus event to display other component Asked 6 years, 10 months ago Modified 6 years, 10 months ago Viewed 17k times Learn about the onfocusout event in JavaScript, including syntax, examples, and browser compatibility, to handle focus loss effectively on web elements. To handle focus out in React, we use ‘onFocusOut’. As a convenience, if you provide a target property in the eventProperties (second argument), then those properties will be assigned to the node which is Feb 9, 2021 · How to detect an event FocusOut? There are events for FocusIn: onFocusCapture, onFocus But I didn't find the event for FocusOut render() { return ( &lt;input onFocusCapture = {this. concat the message string of the input box in focuse, but I can't get the onFocus or onBlur to work. It's a problem of react, not DOM method focus (), because with addEventListe Sep 26, 2025 · The focusout event fires when an element has lost focus, after the blur event. The . Mar 6, 2015 · What's the react way of setting focus on a particular text field after the component is rendered? Documentation seems to suggest using refs, e. Syntax: onFocus={handleOnFocus} Parameter: The function handleOnFocus Responding to Events React lets you add event handlers to your JSX. This event is commonly used to execute functions or perform actions when an element gains focus. I have two inputs. Nov 23, 2023 · user-event v13 user-event is a companion library for Testing Library that provides more advanced simulation of browser interactions than the built-in fireEvent method. To do this, React Query provides a focusManager. Jul 23, 2025 · Learn how to effectively use addEventListener in React, a popular JavaScript library for building user interfaces, with this comprehensive guide. Oct 24, 2024 · Learn how to use the React onFocus event to enhance user interface design and interaction. Elevate user experiences and create… Apr 7, 2024 · Use the `onBlur` prop to detect focus lost (focusOut) event in React. Accessible Landmarks Programmatically managing focus Our React applications continuously modify the HTML DOM during runtime, sometimes leading to keyboard focus being lost or set to an unexpected element. Jan 30, 2019 · fireEvent internally uses the dispatchEvent method of the element which only triggers the bound handlers to that event. Focus events occur when a screen comes into focus, while blur events occur when a screen goes out of focus. (documented below) that work for every navigator, as well as navigator specific events that work only for certain navigators. js for a full list as well as default eventProperties. relatedTarget contains an element that gained focus. Oct 23, 2020 · I'm building a React autocomplete component and testing it using Jest and React-testing-library. This is similar to the :focus-within pseudo class in CSS. This blog will explore how to work with React focus events using TypeScript, covering fundamental concepts, usage methods, common practices, and best practices. So if you bind events for the focus event they will be triggered, but the element will not receive focus. Dec 26, 2024 · The useFocusEffect hook in React Navigation provides a way to handle focus and blur events in your React Native application. In React, focus events bubble. Feb 29, 2024 · We typed the events as React. It normalizes many cross-browser behavioral differences, and ensures that all browsers and platforms behave consistently. relatedTarget. Jan 31, 2025 · A comprehensive guide to the JavaScript onfocus event, detailing how to detect when an element gains focus and how to use it for enhanced user interactions. As I understand it, onFocus should be called when the input box is clicked into, and onBlur should be called when something else becomes the focus. And you should also be able to toggle the options when clicking on it Apr 7, 2024 · A step-by-step guide on how to handle the onKeyDown event on a Div element in React. For example, a button dispatches a click event when a user clicks on it; an input dispatches a change event when the user enters a value in it. Oct 19, 2025 · Focus events are crucial when dealing with user interactions in React applications, especially when handling form elements, keyboard navigation, and accessibility. The `onBlur` event is triggered when an element is about to lose focus. This is similar to the :focus pseudo class in CSS. Aug 25, 2022 · I'm trying to trigger focus event programatically: import { useRef } from "react"; import ". Event handlers are your own functions that will be triggered in response to interactions like clicking, hovering, focusing form inputs, and so on. Jun 28, 2023 · Lets unleash the power of interactivity in React with keydown, keyup, keypress, focus, and blur events. You can learn more about events in the Event handlers lesson of my React fundamentals course. Detecting Focus Entering and Leaving You can use the currentTarget and relatedTarget to differentiate if the focusing or blurring events originated from outside of the parent element. onInvalid: Fires when a form element’s validity changes. Explanation: event. focus () Many React tutorials describe long processes that lead to the successful use of . Here is a demo you can copy and paste that shows how to detect focusing a child, focusing the element itself, and focus entering or leaving the whole subtree. There are few core events such as focus, blur etc. In order to repair this, we need to programmatically nudge the keyboard focus in the right direction. How is useFocusEffect different from adding a listener for focus event The focus event fires when a screen comes into focus. Focus/Blur If an element is focused, a focus event is dispatched, the active element in the document changes, and the previously focused element is blurred. When calling focusManager. In this kind of instances it is convenient to use the componentDidUpdate or componentDidMount methods if you want to focus the element based on a prop, or state element. React’s onFocusOut event is related to the keyboard focus. onReset: Fires when a form is reset. Mar 3, 2023 · The onBlur event is the opposite of the onFocus event. onFocus} &gt . /styles. In addition to these standard events that are automatically dispatched, Lit elements can dispatch custom events. React Events List In this guide, we provide a comprehensive list of React events categorised by their type: Form Events onChange: Fires when the value of an input, select, or textarea changes. FocusEvent<HTMLElement> because the FocusEvent type is used for onFocus and onBlur events in React. However, sometimes you might need access to the DOM elements managed by React—for example, to focus a node, scroll to it, or measure its size and position. focus () with React. Oct 1, 2025 · The focus event fires when an element has received focus. Completely customize it for any need with its modular architecture and expressive API. It occurs when an element (or some element inside it) loses focus.