#Html overflow scrolling easier code#

Take control of your scroll: customizing pull-to-refresh and overflow effects by Google Web Developers.overscroll-behavior: none The default behavior is prevented and quite common in removing scrollbars :').overscroll-behavior: contain This will prevent scrolling on underlying elements.overscroll-behavior: auto The default mode on all webpages.Some of the keyword values supported by overscroll are: Of course, I won't recommend you to completely get rid of scrollbars (unless you have an accessible custom scrollbar) but for some small demos, this trick is helpful.

#Html overflow scrolling easier code#

Simply go to your CSS file and add the following lines of code to the body element:Įnter fullscreen mode Exit fullscreen mode overscroll-behavior-y: it's the same thing as above but on the vertical (y-axis) boundary.Īlso, you might have also used these properties to hide the default scrollbar of a webpage.overscroll-behavior-x: to handle the browser scroll behavior when the horizontal (x-axis) boundary is reached.Usually, you will end up using one of the following two properties: On mobile, you might have experienced a bounce effect when you try to scroll to the bottom (or top) of the page, this behavior of a webpage is controlled by overscroll. So whenever you don't add any overscroll property in your web projects, it defaults to auto.

The overscroll property tells the browser what to do when the body content reaches the boundary of the scroll area. The scroll bars are also faulty, grab the very right hand side of the horizontal scroll bar and drag it left, the canvas stops rendering as you can drag beyond the bounds of the canvas.Alright then, now it's time to know more about what is overscroll, how overflow can help and why do you even need something like touch actions! Oh and the second example stutters when I apply a 6x CPU slowdown, the first example doesn't so I am not sure what the performance benefit is? It seems like an awful lot of extra work having to build things twice, what was the driving force behind going canvas based?įor example, in the emulated sidebars example, I can't scroll with arrow keys on your canvas version? That makes me quite worried that you haven't considered accessibility at all! 😨 So have you implemented a side-DOM for accessibility that replicates everything within the canvas like Google did? And I just hope these tips will save you time when profiling and tweaking canvas performance. So the earlier you accept this trend the better. Some tools, like Flutter are already rendering all user interface inside canvas.

Lots of web-applications will eventually switch from the good old HTML elements to painting pixels on the canvas. I guess the canvas-based rendering will spread in the nearest future. However, the identical app with emulated scrollbars works perfectly fine. The first one uses native scrolling and causes the performance lag on every scroll event. This rule is probably the most important out there, just look at the examples. Check out the Layer Management section in the docs for more info.Įmulate the scrollbars in case you need a scene bigger than your canvas real size. It massively improves performance, because Konva internally creates separate canvas for each Layer and refreshes only a layer that changed. Konva supports many useful shapes like Rect, Circle, Text, Arrow, that you can use out of the box to construct UI.Įnter fullscreen mode Exit fullscreen mode It abstracts away low-level details, like redrawing, bubbling or layering inside canvas. Our choice is awesome Konva.js with react-konva bindings. So we end up creating our personal set of rules to effectively address canvas performance challenges.Įither you use a frontend framework or vanilla JS/TS take a look at one of these wonderful libraries. That’s exactly the issue we faced while working on the highly interactive call flow interface at SIP3. Turns out large canvases are slow, especially on energy-efficient Safari, and may even cause significant energy or significant memory alerts. If you use canvas for something ambitious, there is a great chance that you will run into performance issues. The SIP3 team decided to keep up as well. Recently Google announced that Google Docs will now use a canvas based rendering.

Nowadays, more and more companies adopt Canvas API to implement new shiny things inside a web browser.