As your answer, I modified be below. Once you have the element, you can inspect its scrollLeft and scrollTop properties. https://caniuse.com/#feat=getboundingclientrect, https://developer.mozilla.org/en-US/docs/Web/API/Element/getBoundingClientRect, for example (you still need to customize to fit your needs.). scroller.scrollTop = y; A caveat before I go into this method: I still havent found a bulletproof method for this. ), You can define thresholds so that when a certain ratio of the block is in the viewport the function is triggered. See the Pen Does it make sense to say that if someone was hired for an academic position, that means they were the "best"? And would render libraries such as https://github.com/jeneser/vue-scroll-behavior unnecessary (at least when using html history mode), since we could just use the vue-router behavior to do such. A very simple way to do it in TypeScript: export default { edit 2: unfortunately it looks like onDeactivated function is not guaranteed to be always executed before the content from the old page disappears. Already on GitHub? Asking for help, clarification, or responding to other answers. Hi, I would like to replace an old code made with JQuery with a new one using Vue.js. Its not so great at determining which section is theimportant section on the screen and where they are. on CodePen. Blocks will always be a minimum height of 40vh. on CodePen. } when your page rendered, calling the function to set scroll position. The text was updated successfully, but these errors were encountered: I think this won't be so easy to do since those two things - the scrollposition the router saves right now, and the scrollpostion of an arbitrary element - have not much in common, technically. Can you catch it? You signed in with another tab or window. We now never see an active state for block 6! Thanks! E.g: I'm fairly certain this method could be made into a plugin of some sort. There may be other solutions. Would it be illegal for me to act as a Civillian Traffic Enforcer? Hook in a afterEach route guard so the root element knows when navigation happens. onMounted is only called once the component is initialized the first time, meaning that no data is loaded and we can simply scroll to top. let { x, y } = window.__scrollOffset[this.$route.fullPath]; My legacy jquery is using $(this).position() as below. I'm just using current mouse pointer's position, but need element's absolute position. how to get window scroll position in javascript. Lets determine when the element is notoutside the viewport. And since the header knows about the anchor links its linked to, it can just look to see whats in the viewport and highlight that link. window.__scrollOffset = {}; But there are more problems. Have a question about this project? scrollBehavior should allow configuring scrolling element, feat(scroll) - WIP - allow a different scroll element other than window, https://github.com/jeneser/vue-scroll-behavior, [DrawerType3] Scrolling position after routing. on CodePen. Updating now. Vue scroll tracking (7) by Jim Schofield (@oldcoyote) They wanted scroll tracking so that as the user scrolls the section they are currently on would be highlighted in the sticky header. How do I simplify/combine these two methods for finding the smallest and largest int in an array? How to add external JS scripts to VueJS Components? What other options do we have besides tweaking these viewport rules? have it call saveScrollPosition whenever a popstate event is triggered, the only change would be to allow a custom handler for saveScrollPosition . There is still something deeply unsatisfying about this. }; If you have other onMounted, onActivated, onDeactivated methods you probably want them to run first. there is one page that shows the infinite list of items and is using keep-alive directive to cache the contents. This seems the most simple solution for default history behavior in vue with a scrollable element that isn't window: }, By clicking Sign up for GitHub, you agree to our terms of service and Get and Set Scroll Position of an Element - JavaScript Tutorial on CodePen. To learn more, see our tips on writing great answers. The key to this . I have updated the function to use the router's beforeEach hook instead. console log window scroll position. better ? So why use this? 2022 Moderator Election Q&A Question Collection. Now we have to supply input parameter that is equal to route name.. A little bit more work but still works as intended. feature request: scrollBehavior save and restore scroll for designated element. Fix one corner and the others are messed up. Sign in Does a creature have to see to be affected by the Fear spell initially since it is an illusion? Extending @iBrazilian2 's solution, you can leverage the savedPosition parameter in scrollBehavior to only navigate to the saved position of your scroll element when navigating back/forward from history (popstate). If you use overflow: hidden; on the window/body then you have just disabled the browsers ability to show/hide its controls as well as the many other things I mentioned. Here is my new logic in the elementInViewport function: See the Pen Example: const container = document.querySelector('. privacy statement. See the Pen Here is my visualization: If you think about it, each scrollTop of each un-transformed block will shrink by the proportion that the viewport height takes up on the document height. Also, provide a method for restoring a scroll position. Iteration 1: Naive scroll watching. } For any routes you want to remember the position, just add the route name to the remember array. Thus allowing us to use a specific scroll container for both scrollBehavior and scroll position. Its like putting carpet in a room when theres not enough square feet of carpet! So a cheap workaround is to add a footer, or extra space below the block, so that you can scroll long enough until block 5 is out of the picture. In my case, however, I find it much easier to just override the scroll position per specific page, since I don't have that many pages anyways. Thanks for your answer. javascript scroll to id element. Set top position on scroll - Get Help - Vue Forum }`. js how to scroll to element. Alright, so were going to do some math with our blocks position. Basically the problem isnt removed, we just have a better(?) Support parent container for scroll behavior. It would be nice if we could somehow define from which element we want to save the scroll position. Regarding my example app structure, I'd like to keep the router's functionality exactly as is, i.e. How to constrain regression coefficients to be proportional. Can scrollBehaviour support to specify scroll container? How to get the scroll position of an element in JavaScript - Flavio Copes Am I way off base? but this below worked, `, methods: { Amazingly, I came across your article, matching exactly with my needs . Whats happening? }. Handling scroll with vue.js - Get Help - Vue Forum Can customize scroll element not just window by using scrollBehavior api. Perfect! Only elements small enough get recognized! I haven't gotten that far yet :). But theres still an issue. This code simply sets the top position of a div based on the scrollTop position of its wrapper div. And were going to use intersection observer to trigger a performant scroll event. Basically, were going to figure out what percent each of the blocks are down the document, and track when the scrollTop property is around that percentage. In the meantime i solved it this way: I think this would be a pretty good and obvious feature to add :D. @blake-newman I disagree, I think that each router-view (component) should define it's scrollEl with a local scrollEl property on the component, or a v-scrollEl directive in html. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Here are our current in viewport possibilities. And theres no way for just block 1 to be in view, so its never highlighted! But all is not lost! How can we build a space probe's computer to survive centuries of interstellar travel? I prefer women who cook good food, who speak three languages, and who go mountain hiking - what if it is a woman who only has one of the attributes? Its expecting our element to be both above the bottom of the viewport and below the top. Therefore it sufficies to override these three: In my case, my scroll container is the
element. } By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Intersection observers are performant, so instead of firing a million scroll events the observer only fires at these thresholds. scrollBehavior shouldn't use window.scrollTo, Is up to the component what child element scrolls, Provides consistent syntax across components and teams for readability. Difference between @click and v-on:click Vuejs. Therefore you will see incorrect result in SOME cases (scroll position 0). Heres how it works. window.__scrollOffset[this.$route.fullPath] = { That was a lot. Here is some hackiness that I put together with the following assumptions: See the Pen The key here is to first detect if the page is cached or not. It has to be a little fancy because we want our decision to take into account that certain scrollTop values will never be possible since the viewport stops you from scolling past a certain point. In that route guard, capture the current scroll position of the referenced element and store it for the from route, then restore the old position of the to route. Also, it seems that vue-router should NOT implement this at allscrolling a container that is not supported has unintended side-effects ex: safari scroll to top doesnt work, mobile pull to reload can get trapped, scrolling can get trapped by an outer element and require two taps to scroll, etc. next() So I boldly went down the easiest path of scroll tracking in Vue. This seems the most simple solution for default history behavior in vue with a scrollable element that isn't window: the original suggestion would be a good use case to add, am wondering if this is still being considered? (This is coffeescript, sorry. Example: http://codepen.io/brad426/pen/pezRge. Correct handling of negative chapter numbers. document.getElementById('app').scrollIntoView(); See the Pen But herein lies the rub: its really great for running code like lazy loading where you just need to know whether an element is in the viewport. I'm confident you can deal with it). To subscribe to this RSS feed, copy and paste this URL into your RSS reader. How can I get query parameters from a URL in Vue.js? Making statements based on opinion; back them up with references or personal experience. It would be inappropriate to let the app decide what element within all components should be scrollable (as you would have to go into each component and add the scroll class/id). See the Pen Heres basically the formula I came up with: See the Pen What is the effect of cycling on weight loss? rev2022.11.3.43005. You don't need special functions for this, before/afterEach would be a much better place to put these kinds of things. Is it implemented? get scroll position Code Example - codegrepper.com If anything, vue should implement an html directive ie:
that vue automatically picks up to override scroll position tracking for that component only. Let me know @jschof or in the comments. But dont lose hope! That's why we don't need to listen to popstate event and define our custom beforeEach navigation guard. x: scroller.scrollLeft, You may be asking yourself, Couldnt we just have done that fancy logic with a scroll event?. 2019, What do you think? The realization I have made that if you use the container to show the data - the scrollBehavior function is no longer something you could rely on.. @MuTsunTsai made a good explanation how you could do some overrides to make it work for you. I want to know the `' tag position then display popup above the a tag. In my case, Nothing worked for me So heres what we could do instead: how about we keep an array of blocks that are on the page and always select the element that comes first? Find centralized, trusted content and collaborate around the technologies you use most. It works. Any update on this? Thanks for your answer. I'm not sure whether Vue has the plugin to get the element position directly, you could survey more to check it out, or use @Imre_G 's answer. I hope this helped anyone! Similar to the way you can define a scrollBehavior function on a router instance, I need a way to define how the savedPosition value gets computed/populated. Cool, thanks for your feedback. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. Vue scroll tracking (2) by Jim Schofield (@oldcoyote) }, js set scroll position. This is about when I started to lose all hope. Notice that in my scrollTo function, I query the last matching element, in order to make it compatible with transitions (in which multiple
elements will co-exist). window scroll to div javascript. Actually, because its so much smaller, sometimes 5 isnt even recognized! Or need use one of custom workaround proposed above? I recently was on a project for a client that needed a marketing-style single page site. As a side note, it would be nice if the window.scrollTo(position.x, position.y) line in scroll.js was overridable so that custom scroll libraries could be used instead of scrollTo. The scrollBehavior could be an object instead of a function but as @LinusBorg I'm wondering if keeping this behaviour in a component isn't more flexible and reusable. Vue scroll tracking (8) by Jim Schofield (@oldcoyote) Please comment below or tweet me. Thanks for contributing an answer to Stack Overflow! Is cycling an aerobic or anaerobic exercise? Vue scroll tracking (4) by Jim Schofield (@oldcoyote) It works relatively good, but it makes me nervous. Thats as far as I got for trying to accurately track what blocks are on screen. Yeah, it does. The Element.scrollTop gets or sets the number of pixels that an element's content is scrolled .