![]() ![]() elements that scroll with the page until they reach the top of the viewport, where they “stick” in place, which I cover in another article.Įnjoy this piece? I invite you to follow me at /dudleystorey to learn more. Do not use it on production sites facing the Web: it will not work for every user. This technique is often combined with elements that are are “sticky”, i.e. In comparison to a framework, this syntax is far simpler the one downside is that it doesn’t allow the designer to change the timing function or scroll movement, to avoid abuses. Window.scrollTo is an alternative method functionally, it and window.scroll are the same. scrollTo takes a behavior and top argument, with an optional left argument, the latter two taking the coordinate information of the destimation. The code uses event bubbling to listen to a click inside the nav element scrollTo method to get there instead, smoothed by the earlier CSS declaration. Var anchorLinks = document.getElementsByTagName("nav") ĭest = document.getElementById(e.("#")) I’ve expanded the code slightly from the promised five lines for clarity: The JavaScript, added to the bottom so it doesn’t block execution on the rest of the page. These links will go to elements with matching id attribute values: ![]() ![]() Let’s imagine that we have a section with links: This is enough to make the effect work in the current version of Firefox, but browsers like Chrome need more work, as of this writing.īrowsers that do not support the scroll-behavior CSS property will need to use the JavaScript API, and most of those will need a polyfill: I would recommend Dustan Kasten’s smoothscroll, although there are many other possibilities. Cancellable means you can stop it with a. Without any further action, the scroll event goes to the destination. UK English coders, note the spelling of scroll-behavior: no “u"! About scroll-behavior: smooth This is a very new property, and support is relatively low. As the page scrolls back to the top, users see something that catches their eye and they want to stop the scrolling, so they do a smidge of a scroll on the mouse wheel, trackpad, or whatever. Adding to this confusion is the fact that some browsers support the API, while others do not.įor the CSS method, the element that will be smooth-scrolled (frequently, but not exclusively, the body) needs to have a scroll-behavior of smooth applied in CSS: length // Find scroll percentage on scroll (using cross-browser properties), and offset dash. Remove this line to show the triangle before scroll draw. length // Hide the triangle by offsetting dash. Somewhat confusingly, the Smooth Scrolling API is implemented in two ways: once as a CSS property, and again in JavaScript. var length triangle.getTotalLength() // The start position of the drawing. For that reason, you must ensure that sure that the page has plenty of content (or filler text). Obviously, the page needs to extend past the bottom of the viewport window for this technique to work: if the browser already displays all the page content, no scroll will take place. This is the target, further down the page. Modern JavaScript provides a more efficient, native alternative, in the form of the window.scrollTo method.Ī standard anchor link is used as the basis of the technique: that way, if the new smooth scroll code doesn’t work for any reason, the page will still go to the targeted location. Historically, this was achieved with JQuery, but it's overkill to load a framework just for one technique. For the sake of appearance, a site's design sometimes calls for a smooth or slowed scroll to a point on a page. Then you link a button or text above or below to that section by typing the # symbol before the name you put in the code.HTML has always had the ability to jump to locations on a page, provided the target element has an id attribute, via a technique known as anchor links. How to create same-page navigation links with a smooth scroll actionĪdd a Code Block with a single line of code in it, at the start of each section you want to be able to jump TO. Would you rather watch it than read it? Click here to jump straight to the video! I got a lot of great feedback on that post & promised I’d add a new one with the scroll animation effect, so that when someone clicks the link they can see the page quickly scroll to that section for them, rather than just appearing there in an instant.Īnd that smooth scroll effect is what I’m sharing today! So quick, in fact, that it can be pretty jarring.Īnchor links are great for long pages where you want to provide the viewer a way to skip through it & get straight to the good stuff, IF they want to. A while back I posted a tutorial about how to create same-page jump links or anchor links, whichever you prefer to call them, either way they essentially just link to another spot on that same page allowing the viewer to “jump” to that spot quickly. ![]()
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