React Onscroll Position

Once you have your development environment setup, we will first import all the React Native components we will need for this component. Virtualizing a list. js interview questions. Explore my features React is a practical solution for any WordPress project. Interested in building mobile apps using React Native? Check out /r/reactnative! New to React? Here are great, free resources! Read the official Getting Started page on the docs /u/acemarke's suggested resources for learning React; Kent Dodds' Egghead. React Native Spring ScrollView V2 is a high performance cross-platform native bounces ScrollView for React Native. Onscroll isn't always onscroll. These values are used later for setWindowPosition. Let's say the user scrolled for 50 pixels vertically. ag-Grid is a feature-rich datagrid available in Free or Enterprise versions. The content can consist of multiple elements of varying type and size. The value gets updated by the javascript code every time the user scrolls up or down ("onscroll" event) and put in the hidden input field, so that it will be available upon each postback. List of currently available animations: linear - no easing, no acceleration. In order to save time, we’ll make use of Create React App to bootstrap a quick React application for us. I'll cover the following topics in the code samples below: Page, Lock, Scrolling JavaScript, JavaScript, Scrolling Html, and Document Body. In this video, you will learn how to use onContentSizeChange to dynamically enable or disable the scrolling ability of a React Native ScrollView based on the height of the content inside of the. Đây cũng là một bài demo khá đơn giản giúp các bạn làm quen với animation trong React Native. In our previous tutorial, we saw Creating ListView Header Parallax Animation, now in this example we will go little further and make the list header parallax animation with an view stick to top when list is scrolled. nativeEvent. React Bootstrap scrollspy autmatically updates tabs, navigation or list group components based on scroll position to indicate which link is currently active in the viewport. It doesn’t matter if they’re positioned as absolute or fixed. Hi, is there a way to count the number of scroll steps? I’m talking about the little steps you can feel while scrolling. css Last fall Atomic Object launched a redesigned website with lots of great new visuals and content. A React Node is anything that satisfies React. But in this plugin we cached all dimensions as well as adding will-change: transform and working with translate(Y, X) instead of top: Y; Left: X; that increased performance significantly, while building Sticky sidebar plugin we prevent repainting and reflow to make it as smooth. Toggle between class names on different scroll positions - When the user scrolls down 50 pixels from the top of the page, the class name "test" will be added to an element (and removed when scrolled up again). Custom Scroll Container. (iOS & Android) It is easy to support pulling to refresh and dragging to load more data. easeOutCubic - decelerating to zero velocity. To implement that in a native approach, you want to go with JavaScript and we want to hook up to the onScroll event of the ScrollView inside the ListView. memo isn't the silver bullet to all render problems and you have to split up components intelligently. Javascript: onScroll window body HTML If you would like to respond to scroll events of a Web page in a browser at run time, then you must build up an onScroll event in the HTML page and write a matching Javascript function. This could then be passed into a translateX/translateY. Use onContentSizeChange, scrollEnabled and onScroll properties of the ScrollView to adjust the screen size. I’ll start series with explanation how to implement someone design picture in real life using React Native, so let’s go!. Please check Part 1 (How we build apps using React Native). React Native Full Width Horizontal JSON ScrollView showing Page Numbers. OK, I Understand. because we moved our onScroll event handling to native, React Native ensures that all involved Animated events are handled on the native. Animate the text color of the header and tabs as the scroll changes. But in WinIE 5 and 6 that is not what happens. If false then it will position next to the target; directional Hint: How the element should be positioned. js is designed to be easy to use and customize. setValue() will be called on them // with the updated values. This reference guide covers each of these events. In order to save time, we’ll make use of Create React App to bootstrap a quick React application for us. event, it will only work with direct events and not bubbling events. Pointer events are not yet supported in every browser (at the time of writing this article, supported browsers include: Chrome, Firefox, Edge, and Internet Explorer). To avoid this we add touchmove event - so in fact we detect not scrolling, but user's device screen touch - it also change its position, causing scroll changes. Horizontal scroll animations in React Native. Since scroll events can fire at a high rate, the event handler shouldn't execute computationally expensive operations such as DOM modifications. As you can probably guess, linking to an internal section in your page requires not one but two links. npm install react-native-vector-icons --save; react-native link; Launch the Simulator. 现在的问题是,我发现控制台刚刚打印出初始值(该值是固定的,从不改变)offsetTop数据永远不会改变onscroll函数. Here is an example of React Native Collapsible Toolbar with Animation. Hello: I'd like to know if it's possible to bind the scroll position on a TableView to the scroll position in other TableView, so both component scroll at the same time. In continuation of my experimentation with position:fixed from yesterday, I decided to try and enhance the form slightly by having it check to see how close the comment form was to the top of the page. As you interact with the grid, it fires events. Just like mouse moves. I am trying to make it so whenever something new is rendered into a scroll view, the scroll view will stay put and not bump up and down. At the end of the tick, the React subtrees with state changes are re-rendered and a JSON description of changes to the native views is sent back down to native. Right now if a new component is rendered in, the scrollview appears to be reset to 0. The other case is Scroll. Comprehensive, community-driven list of essential React. Creating a Simple Navbar with Bootstrap. memo isn't the silver bullet to all render problems and you have to split up components intelligently. If it doesn't find an element, no focus will be set and the method will return false. When using Animated. Why use it?. Once you have your development environment setup, we will first import all the React Native components we will need for this component. Defaults to false. In this tutorial, We have to bind animated value to scroll Y position of ScrollView component. Animate the text color of the header and tabs as the scroll changes. The animation comes into play when we scroll the Home Screen from top to bottom or vice-versa. A Scroll Rect can be used when content that takes up a lot of space needs to be displayed in a small area. The Scroll Rect provides functionality to scroll over this content. This value is subpixel precise in modern browsers, meaning that it isn't necessarily a whole number. Component for animating vertical scrolling. If it got too high, I'd change from position:absolute to position:fixed like I did yesterday. When you scroll down, it slides out of view and slides back in when scrolling up. Trong bài tutorial này, chúng ta sẽ gắn một giá trị động (animated value) vào Y scroll position của ScrollView. keyExtractor tells the list to use the ids for the react keys instead of the default key property. A lower number yields better accuracy for code that is tracking the scroll position, but can lead to scroll performance problems due to the volume of information being send over the bridge. com, but so far I've yet to find another website in which this works. Tags: UI Components, Rich Text Editor, React, React-component, Editor, Codemirror, Code. JSFiddle or its authors are not responsible or liable for any loss or damage of any kind during the usage of provided code. So the user has released, and the row is about to scroll back into the 0 position. set Initial Focus: If true then the callout will attempt to focus the first focusable element that it contains. The header on this site is a living example. Change the timeout value to alter the scrolling speed in milliseconds. A scroll component for React. For most uses, this works great, but in some cases this may cause flickering - one common cause is preventing edits by keeping value the same. React component for wrapping iScroll library. React-virtualized implements virtual rendering with a set of components that basically work in the following way: They calculate which items are visible inside the area where the list is displayed (the viewport). Right now if a new component is rendered in, the scrollview appears to be reset to 0. That same value - if present - will be fetched by javascript (in the "onload" event) and then used to update the browser's scroll position. Bool displayBottomUpwards. This is a simple example where we will only use one component. Why this action? Well we setup things to operate on the scroll actions. when some button is pressed) rather than tracking it whenever the user scrolls, then invoking an onScroll listener is going to cause performance issues. Forgetting to transfer {flex: 1} down the view stack can lead to errors here, which the element inspector makes easy to debug. dialog, alertdialog). pin an element starting at a specific scroll position – either indefinitely or for a limited amount of scroll progress (sticky elements). IOW, apples and oranges. Trong bài tutorial này, chúng ta sẽ gắn một giá trị động (animated value) vào Y scroll position của ScrollView. For most uses, this works great, but in some cases this may cause flickering - one common cause is preventing edits by keeping value the same. Container takes mainly three components: , and. Now, let’s run the app in the simulator. javascript - 在React. Right now if a new component is rendered in, the scrollview appears to be reset to 0. Position the other two divs over the center one. React Native có những API tạo animation rất mạnh mẽ, nó cho phép tạo hiệu ứng một giá trị nhưng cũng đồng thời gắn giá trị của nó vào một sự kiện(event). Onscroll isn't always onscroll. Title - animate the scale and the Y position. So when I resize the window to width 700px, header must not collapse on scroll and vice-versa when I resize from little to big document width it must become collapsible. Scrolls the content to a specific position. A component to make all your infinite scrolling woes go away with just 4. I am trying to make it so whenever something new is rendered into a scroll view, the scroll view will stay put and not bump up and down. Understanding and being able to overcome such limitations are important parts of working with an abstraction. y! Breaking changes in version 1. // AnimatedValue objects hooked up to either (or both) of these properties will be automatically // hooked into the onScroll handler of the scrollview and. 2 Implementation MooTools 1. don't keep applying the state. As you can probably guess, linking to an internal section in your page requires not one but two links. A cookie can be used to store the grid scroll position so it can be restored when entering the page again. React Headroom is a React Component to hide/show your header on scroll. import {View, Text} from 'react-native'; export const Page: React. If true the position returned will have the menu element cover the target. I am trying to implement a List view in React. But in WinIE 5 and 6 that is not what happens. In Part One, we set up our app and covered basic messaging. スクロール位置をとって表示するみたいなことをしようと思ったときに、ググっても出てくるのがjQueryの情報ばかりで困ったので、Reactでやってみました。 何を作るか 縦にスクロールしたときに、縦位置がなんなのかを. The native onScroll event handler won’t do in this case, because we’ll need additional information about scrolling that native onScroll handler doesn’t provide - scroll delta in pixels, and whether the scrolling is in progress or not. Compass is a great thing. // position on the active scrollview when it scrolls. A Tale of Two Links. The React Native Animated API makes it really simple to create complex, yet smooth animations. In the underlying code, you'll see references to a few different types of animation objects: Animated Values, Transforms, Drivers, and Props are laced together as nodes in a graph. In Collapsible Toolbar when screen renders for the first time we got the broad header which will help us to get the attention of the user on important details. com/watch?v=HimvFbossU8). Right now if a new component is rendered in, the scrollview appears to be reset to 0. Container takes mainly three components: , and. onscroll Event Without Killing Your Performance - joshbroton. Title - animate the scale and the Y position. CSS just got a sweet little upgrade. babelrc file (or other equivalent) in place, you can use coffee --transpile to pipe CoffeeScript’s. Navigation. The horizontal scroll position is the same as the number of pixels that are hidden from view to the left of the scrollable area. I am trying to implement a List view in React. A while back I made a pattern for this effect that I’ve used a few times now. First of all, the current size and position of the video window is retrieved in OnScroll. When the scroll position is at 150, onScroll is where we can pass the animation. It supports searching, remote data sets, and pagination (infinite scrolling) of results. The read-only scrollY property of the Window interface returns the number of pixels that the document is currently scrolled vertically. Get and set scroll position of an element Get or set the horizontal and vertical scroll position of an element or the document. That was exactly the help i was looking for 😀 although I have a little problem 🙁 the transition right after the navbar disappears and then appears again is not 100% smooth. The example function below (arbitrarily called pageScroll) shows how this can work:. React Headroom is a React Component to hide/show your header on scroll. documentElement. A presentation created with Slides. ! Version 2. In this article, I'll show you how to use react-virtualized to display a large amount of data efficiently. 28-rc on GitHub (npm) General Breaking changes Kill NavigationLegacyNavigator (ef44781) - @hedgerwang Kill NavigationExperimental Containers (14eb427) - @ericvicenti Kill NavigationView (c3714d7) - @hedgerwang Deprecations Keyboard events should now be registered via Keyboard module (currently Keyboard module is not exposed, require it globally or wait for the 0. Building this site in React means only having to build each part once, then combining the components according to the needs of the page. When To Use #. However, the reason behind it -- the events are not specified in the validators' specifications in question -- is invalid itself. The component descends from React Natives ScrollView component, so if you're not using NativeBase you can still use this same method. Use attachTo prop for that. The other case is Scroll. For adding tasks I wrote a drag and drop animation inspired by Asana’s…Continue readingReact Native: Asana style card drag and drop animation. dynamicLoading. Sometimes we also need to access the original DOM event in an inline statement handler. The following example demonstrates how to toggle a fixed-header class by using the window scrollTop(). In today's post we bring to you 10 jQuery Horizontal Scroll Demos & Plugins useful for those who see things horizontally. Here I attempted to create a reliable method to read the client size of the of the browser's window and the position of the scroll bars. There isn't a scrollProperty in TableView and the onScroll event doesn't seem to w. That might be true. Title - animate the scale and the Y position. Hooking Up to the window. js中更新onScroll上的组件样式 我在React中构建了一个组件,它应该在窗口滚动上更新自己的样式以创建视差效果。 组件 itemTranslate 方法如下所示:. To avoid this we add touchmove event - so in fact we detect not scrolling, but user's device screen touch - it also change its position, causing scroll changes. You will not notice a difference between values set between 1-16 as the JS run loop is synced to the screen refresh rate. Pointer events are not yet supported in every browser (at the time of writing this article, supported browsers include: Chrome, Firefox, Edge, and Internet Explorer). React Headroom is a React Component to hide/show your header on scroll. The Virtuoso component accepts an optional ScrollContainer property, which can be used to customize the scrollable element, allowing for example integration with custom scrollbars. We’re going to need react-native-vector-icons module to add an icon to our header. You can incorporate the event onScroll in almost any HTML elements such as in HTML div or TextArea container elements. Use the properties scrollTop and scrollLeft to get or set the scroll position of an element:. Namely, we’ll discuss where and how types are inferred. innerHTML = document. It's only the onScroll event that has issues. To implement that in a native approach, you want to go with JavaScript and we want to hook up to the onScroll event of the ScrollView inside the ListView. A lower number yields better accuracy for code that is tracking the scroll position, but can lead to scroll performance problems due to the volume of information being send over the bridge. Animation này có thể ứng dụng vào các scroll view, list view giúp view của bạn thân thiện hơn với người dùng. vs - which one to use? ScrollView renders all its react child components at once, but this has a performance downside. The idea is to implement the tags section as in the original Airbnb app's Home Screen at the bottom of the search bar. Since scroll events can fire at a high rate, the event handler shouldn't execute computationally expensive operations such as DOM modifications. For instance: Show/hide additional controls or information depending on where in the document the user is. babelrc file (or other equivalent) in place, you can use coffee --transpile to pipe CoffeeScript’s. Feel free to move about as you wish, but please stay inside the plane till we landit's a bit cold outside, and if you walk on the wings it affects the flight pattern. The scroll event allows to react on a page or element scrolling. virtualized 是在大数据列表中应用的一种技术,主要是为了减少不可见区域不必要的渲染从而提高性能,特别是数据量在成千上万条效果尤为明显。. One drawback of JSX, however, is that it makes accessing component elements indirect, if not difficult. In the underlying code, you'll see references to a few different types of animation objects: Animated Values, Transforms, Drivers, and Props are laced together as nodes in a graph. React Chat Tutorial: Storing Message History (2/4) This is Part Two of our four part series on building a chat app with React and PubNub. EKONOMİ HAKKINDA ARADIĞINIZ HERŞEY [ USD Alış : 1,6050 Satış : 1,6200 ] [ EUR Alış : 2,0200 Satış : 2,0350 ] [ DEM Alış : 0,9000 Satış : 1,0000 ] [ GBP. 大致看了下原型设计,写几个小demo先试试水. Description. On top of it we're going to add our ScrollView with some fake items in it. easeOutCubic - decelerating to zero velocity. See also: DayPilot. Animate the position of the tabs so that they stop scrolling up after they reach the top of the page. The minimum scroll * position is generally zero and the maximum scroll position * is generally the content size less the screen size. It has support for both scroll directions. Defaults to false. Is there an event for capturing scrolling in the ASPxGridView (onscroll)? I want to be able to scroll a seperate scrollable div as the ASPxGridView is scrolled. Sticky positioning in CSS lets us build some really neat interactions in very few lines of code. react-headroom. You can incorporate the event onScroll in almost any HTML elements such as in HTML div or TextArea container elements. If the scroll bar is at the very left, or if the element is not scrollable, this number will be 0. Folks, we have reached our cruising altitude now, so I am going to switch the seat belt sign off. If you use a 3rd party tool to measure the position from the top-left corner of your viewport to the top-left corner of the image, you will see that the position exactly matches what our code showed: [ x marks the spot! ] Let's talk a little bit more about this example. ScrollView Like a View, this component is a container for other components. The following example demonstrates how to toggle a fixed-header class by using the window scrollTop(). React Chat Tutorial: Storing Message History (2/4) This is Part Two of our four part series on building a chat app with React and PubNub. The component descends from React Natives ScrollView component, so if you're not using NativeBase you can still use this same method. So the user has released, and the row is about to scroll back into the 0 position. JSFiddle or its authors are not responsible or liable for any loss or damage of any kind during the usage of provided code. As the scroll position changes, we want to dissolve accordingly and as the scroll position changes upwards, we want to change the scale. Welcome to part two of a three-part series on adding animations to your React Native app. Understanding and being able to overcome such limitations are important parts of working with an abstraction. import React from ' react ' import ScrollManager from '. GridScrollEventArgs OnScroll Property. react-infinite-scroll-component. ScrollMagic helps you to easily react to the user's current scroll position. Despite that, I still think this can be useful. Any other event would cause the actions the user want to take to be wrong since the onScroll events will be fired when the user releases. We are just adding onClick event that will trigger updateState function once the button is clicked. If the user scrolls far enough that the object (let’s say it’s an h3) would be scrolled off the screen, but the h3’s parent div is still visible onscreen, treat the object as though it were position:fixed (at whatever top or left or right or bottom parameters you give it). The Scroll Rect provides functionality to scroll over this content. fullPage plugin by Alvaro Trigo. Getting window size and scroll bars position in JavaScript/DHTML. scrollWidth() Gets the scrollable content's width in pixels. Sticky Conditions. npm install react-native-vector-icons --save; react-native link; Launch the Simulator. Virtualizing a list. In order to bound the height of a ScrollView, either set the height of the view directly (discouraged) or make sure all parent views have bounded height. com | Thoughts and Musings of a Web Nerd The window. If you are familiar with animations on React-Native, you probably have dealt with the Animated API provided by default. React Native Spring ScrollView V2 is a high performance cross-platform native bounces ScrollView for React Native. JSX is an amazing pseudo-language for React, and if I'm honest, it's what brought me to love React so much. I am trying to make it so whenever something new is rendered into a scroll view, the scroll view will stay put and not bump up and down. js - The Progressive JavaScript Framework. Despite that, I still think this can be useful. I recently came across the prescribed problem above. First, you'll see the problems with rendering a huge data set. Update style of a component onScroll in React. We often need them when moving or positioning elements in JavaScript. What I am trying to achieve is that to store the list headers informations and register the components and register the scroll event. A strengthening trend in corn consumption, smaller corn acreage, and the developing production issues in South America signify a positive outlook for corn in 2018. In Part One, we set up our app and covered basic messaging. react-scroll-sync - Synced scroll position across multiple scrollable elements #opensource. If your web app uses JavaScript to accomplish taxing tasks, a debounce function is essential to ensuring a given task doesn't fire so often that it bricks browser performance. The ListView component in React Native has 2 different functions known as  scrollToEnd({}) and  scrollTo({}Index_Position), The  scrollToEnd({})  function will automatically scroll down at the bottom of ListView at the last index value and  scrollTo({}Index_Position) function will give us the functionality to scroll to any given specific ListView item index value. Right now if a new component is rendered in, the scrollview appears to be reset to 0. react-headroom. easeInOutCubic - acceleration until. To get the ScrollView's current scrolling position, the react native ScrollView component provides onScroll prop, which takes a function with event parameter and this function executes every time when we scroll the ScrollView and through this event parameter we can get the ScrollView's current scrolling position. Scroll Position Restoration. We can connect an Animated. Any other event would cause the actions the user want to take to be wrong since the onScroll events will be fired when the user releases. width > 992px). So in our useEffect hook if we call our scroll function it will run all the logic based on the current scroll position and update our selected state accordingly. More Usable Forms – Controlling Scroll Position. don't keep applying the state. So the user has released, and the row is about to scroll back into the 0 position. easeInCubic - accelerating from zero velocity. In continuation of my experimentation with position:fixed from yesterday, I decided to try and enhance the form slightly by having it check to see how close the comment form was to the top of the page. A Beautiful Site is a small web development studio based in Central Florida. I've looked at plenty of tutorials, including Kirupa's, which are among the clearest I've found. We'll use Animated. As you can probably guess, linking to an internal section in your page requires not one but two links. Examples Scroll event throttling. the rest content(the content above) jumps for about the height of the header to the top. Since our custom View will need to react to gestures, we need to a GestureDetector here. I need to control the scrolling with a button - that one I can drag but not scroll. Dealing with scroll position when you insert content is usually a difficult problem to solve. React is an abstraction over the DOM and as any abstraction, it has its costs and limitations that you may hit sooner or later. Actualizar el estilo de un componente onScroll en React. target) とすると elementが出力された。 やばみ. In this section, we will cover type inference in TypeScript. 17: React - svg 파일을 확장성있는 컴포넌트로 만들어서 스타일링 하기 (1) 2018. React Native Spring ScrollView V2 is a high performance cross-platform native bounces ScrollView for React Native. UnControlled consists of a simple wrapper largely powered by the inner workings of codemirror itself, while Controlled will demand state management from the user, preventing codemirror changes unless properly handled via value. The fallback is unsticky for browser not supporting position: sticky. 默认,注意:需要手动给 ListView 设置高度 html 的 body 容器. onscroll不触发的原因和解决. The Visual Viewport API is designed to provide an explicit mechanism for developers to query and potentially modify the properties of the visual viewport. Just how To See A new Leisure activity Because A good Person of legal ageRacking your brains on things to do within your slow days or perhaps your current times might be many demanding stuff. We blog about web design, web development, technology, bootstrapping, startups, and other awesome things. Make your forms more usable by controlling the user's scroll position after post-backs. Creating a Simple Navbar with Bootstrap. 我拼凑了Microsoft Excel的工作版本,如“冻结痛苦”视图. 2 Usage To call the swap. js is designed to be easy to use and customize. Explore my features React is a practical solution for any WordPress project. A scroll component for React. So open your terminal and run the following commands: $. (iOS & Android) It is easy to support pulling to refresh and dragging to load more data. Since scroll events can fire at a high rate, the event handler shouldn't execute computationally expensive operations such as DOM modifications. Namely, we’ll discuss where and how types are inferred. スクロール位置をとって表示するみたいなことをしようと思ったときに、ググっても出てくるのがjQueryの情報ばかりで困ったので、Reactでやってみました。 何を作るか 縦にスクロールしたときに、縦位置がなんなのかを. So, I Googled and found an article on CodeProject (Persisting the scroll position of child DIV's using MS AJAX) - however, the provided solution didn't work for me, so I decided to implement my own solution. OK, I Understand. There isn't a scrollProperty in TableView and the onScroll event doesn't seem to w. Universal SubscriptionOur Best Value - includes over 600 UI Controls, our award-winning reporting platform, DevExpress Dashboard, the eXpressApp Framework, CodeRush for Visual Studio and more. Track the position with onscroll -> requestAnimationFrame -> calc, specifically, defer the work until rAF fires; Only switch to position: fixed when the element is just about to hit the viewport boundary; Only toggle the sticky state when the element goes in and out of the boundary, i. It is bridged from Native in V2,and resolve a big problem in V1 when Javascript thread is stuck. A row underneath with actions, animating in based on the drag position of the top row. First attempt — performance analysis. If your web app uses JavaScript to accomplish taxing tasks, a debounce function is essential to ensuring a given task doesn't fire so often that it bricks browser performance. A React Node is anything that satisfies React. Javascript: onScroll window body HTML If you would like to respond to scroll events of a Web page in a browser at run time, then you must build up an onScroll event in the HTML page and write a matching Javascript function. Perhaps ‘shocking’ is too extreme, but there are two things that are often misrepresented, and I’m guessing cause pain. update() Updates the scrollable contents' dimensions. We often need them when moving or positioning elements in JavaScript. I've written how to create an infinite scroll using ListView before. Onscroll method to include detection of scroll direction? Can one use Window. A scroll event is sent whenever the element's scroll position changes, regardless of the cause. Обработчик onscroll должен проверить, какие изображения видимы, и показать их. Horizontal Calendar in React Native by Add onScroll() handler that updates // Minimal possible X position value to prevent scrolling before the first day. Element size and scrolling There are many JavaScript properties that allow us to read information about element width, height and other geometry features. react-headroom. useNativeDriver currently does not support the position absolute due to React-Native limitations. In Windows you can adjust your scrolling speed, for me it’s set to roll the wheel one notch to scroll 3 lines at a time. A Scroll Rect can be used when content that takes up a lot of space needs to be displayed in a small area. We all know that MooTools 1. js in any code editor and replace the code with the following code. positionX: xPos: center: positionY: yPos: center: speed: float: 0. onClick onContextMenu onDoubleClick onDrag onDragEnd onDragEnter onDragExit onDragLeave onDragOver onDragStart onDrop onMouseDown onMouseEnter onMouseLeave onMouseMove onMouseOut onMouseOver onMouseUp onTouchCancel onTouchEnd onTouchMove onTouchStart onScroll onWheel onChange onInput onSubmit onFocus onBlur onKeyDown onKeyPress onKeyUp onCopy onCut onPaste. A community for learning and developing web applications using React by Facebook. You might like to use this functionality in a search page, for example, on which the user can sort the results by column. ListView 有两种类型的滚动容器: 局部 div 容器.