In this article, we will talk about different scroll strategies that you can use in your Appium test scripts. We will also provide detailed appium scroll examples which will help you come up with the best logic for your own scripts.
Let us first have a quick look at the topics that we will cover in this article. Note: This article is bit long as it shows multiple scenarios and examples on how to scroll using Appium. The approach that we recommened here is to go through the complete article, and then identify the best scroll strategy based on the mobile app you are testing.
If you have any doubts anywhere, then please feel free to contact us using the comments section.How to scroll into view in Selenium Webdriver
Let us now start with the first topic. UIScrollable is an Android class that provides support for searching for items in scrollable layout elements. You can use this class with both horizontal and vertical scrolls. This class provides a lot of methods as shown in this link — UIScrollable Android.
Important Note: Even though this class provides a lot of methods, Appium, as of now can only use a few of these methods. And from all the methods that return boolean or int values, you can only use ScrollIntoView method. Appium might add support to these methods in some upcoming versions. Let us now have a look at some examples and scenarios on how you can use UIScrollable with Appium to scroll through a scrollable list. All the examples will use Google Play Store as the app under test.
We will also provide various screenshots so that it becomes easier for you to see how the code is implemented. To use this method, you would need to identify the following 3 parameters —. This will get clear once you have a look at the this example.
The 3 parameters that you need here are shown in the below image —. Please check the format of the above code very carefully. Similar format will be used for all scroll methods that use UIScrollable class. The convention is to —. In the above example, we have used UISelector.Learn Development at Frontend Masters.
Another minor little trick that helps me sometimes is to scroll over so you can see offending overflow area, and then click and Inspect Element in that space to see if you can target the offending element. Sometimes horizontal overflow is more elusive. But with the document itself, you can still force a scroll over there. Weird but true.
Note this is an issue in desktop Blink or WebKit based browsers. I ran into this issue designing the search form on CodePen that kinda slides out when you click a thing. Simplified, that would be like this:. The solution, in this case, is to hide the overflow on a parent elementrather than relying on the hidden overflow on the body. Frontend Masters is the best place to get it. You can always add: opacity: 1! Well, if you do this without the proper box model, you are adding up 2px on each element.
You should really get into keyboard shortcuts. Nodes can be deleted via the del key. So much faster. Little hard to screencast a keyboard shortcut. Sure, for the screencast it may be more visible.
I must say that having neither of these in the video made it quite painful to watch. I hope you can appreciate these two tips! I always use this as an excuse to fire up the FireFox dev tools 3D view. I can then scoot around and see which invisible things are hanging out in the gutters. Why a TreeWalker? One element may trigger the horizontal scrollbar even when its width is smaller than document.
Remember, using outline is better than border because an outline doesn't take space in DOM positioning. We can use the gecko instead.
Finding/Fixing Unintended Body Overflow
I ran across this exact problem the other day on a WordPress site I was developing. Next time, come out with these tips a few days earlier! Our approach has been to always have a div sitting just inside the body tag with an inline style applied of overflow:hidden on. I know this is a slightly different angle to the post which is trying to diagnose and remedy unintentional breaks, but thought that it might help someone.
Ughck, accidental horizontal scrollbar, amiright? Hidden Horizontal Overflow Sometimes horizontal overflow is more elusive. Simplified, that would be like this: The solution, in this case, is to hide the overflow on a parent elementrather than relying on the hidden overflow on the body. Need some front-end development training?
Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I have a scrolled div and I want to have a link when I click on it it will force this div to scroll to view an element inside. I wrote its JavasSript like this:.
You need to get the top offset of the element you'd like to scroll into view, relative to its parent the scrolling div container :. The variable topPos is now set to the distance between the top of the scrolling div and the element you wish to have visible in pixels.
Again, this will scroll the div so that the element you wish to see is exactly at the top or if that's not possible, scrolled as far down as it can so it's visible.
You would have to find the position of the element in the DIV you want to scroll to, and set the scrollTop property. Note that browser support isn't great for this one. To scroll an element into view of a div, only if needed, you can use this scrollIfNeeded function:.
The animation is optional: you could also take the scrollTop value calculated above and put it directly in the container's scrollTop property. Setting ScrollTop does give the desired result but the scroll is very abrupt. Using jquery to have smooth scroll was not an option.
So here's a native way to get the job done that supports all major browsers. Reference - caniuse. And here's a working snippet for the doubtful - document. Update: As you can perceive in the comments, it seems that Element. So if you don't care about IE you really shouldn'tfeel free to use this in all your projects.
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It does not fire if the element is added dynamically, such as with appendChild. Does not fire if the element is added dynamically, eg with appendChild. Additionally, the events bubble up from document. Both events are non-cancellable you can't prevent the user from coming online, or going offline. Learn the best of web development Get the latest and greatest from MDN delivered straight to your inbox. The newsletter is offered in English only at the moment. Sign up now. Sign in with Github Sign in with Google.
Chrome Full support Edge Full support To change preferences in Firefox, visit about:config. IE No support No. Opera Full support Safari Full support 9. WebView Android Full support The scrollIntoView method scrolls the specified element into the visible area of the browser window. If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail:. HOW TO. Your message has been sent to W3Schools. W3Schools is optimized for learning, testing, and training.
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A boolean value that indicates the type of the align: true - the top of the element will be aligned to the top of the visible area of the scrollable ancestor false - the bottom of the element will be aligned to the bottom of the visible area of the scrollable ancestor. If omitted, it will scroll to the top of the element.
Note: Depending on the layout of other elements, some elements may not be scrolled completely to the top or to the bottom.While this may be hard to believe, especially if you are familiar with how layout in HTML works, elements are positioned in some sort of sensible manner.
Those manners are many and often confusing to discuss here, but there is some logic behind the position of everything you see. With great certainty, all elements end up at a particular location. The difficult thing to grasp is that, the location of an element is something you indirectly define by fiddling with parent elements, floats, paddings, margins, positions, and more. Very rarely will you set the position of an element using a precise X and Y value.
In times that you do, those values are relative to whatever container you are in - a container whose own position may be set through mysterious ways. In this short tutorial, you will see the code for getting the exact position of an HTML element and learn why it works the way it does. This will be a good one, so let's get started!
It returns an object containing an x property and a y property. You should also ensure you update the various position values when your browser is scrolled or resized. The updatePosition function helps you reset any values accordingly when those situations happen:. What you've seen here is just the basic usage. That is still an incomplete picture on how it works, so let's fix that in the next section.
To see the code from the previous section at work, here is a live example. When you run the example, you will see a dialog that looks as follows:. This dialog tells you the position of an element you are looking for, and that element is the image of Nyan Cat with an id of imageLocation. The returned position is an x value of and a y value of 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:.
Let's talk a little bit more about this example. Like the example page's text mentions, the image is located inside a container that is absolutely positioned and has all kinds of CSS shenanigans applied to it.
Get and set scroll position of an element
Despite that, our code was able to get the exact position. You can even try resizing your browser and scrolling the page around. The position will still be properly returned.
Right now, you've seen the code. You've seen the example. All that is left is for you to understand why the code works. Before looking at each line in detail, let's talk a little bit about how layout for an element works in HTML. For the most part, an element's position is partly determined by its own CSS properties, but it is largely determined by its parent's CSS properties. The properties that I am referring to are primarily the paddingmarginand border.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I have this situation in which I need to scroll an element into the viewport. The problem is that I don't know which element is scrollable. For example, in Portrait the body is scrollable and in Landscape its an other element and there are more situation which change the scrollable element. Now the question, given an element which needs to be scrolled into the viewport, what is the best way to find its first scrollable parent?
I've setup a demo here. With the button you can toggle between two different situations. I went with this rather than the accepted answer's solution which will not find the scroll parent if there's no content overflow yet.
JQuery UI, instead returned the document object. This is odd as values like. If you are using jQuery UI you can use the scrollParent method. Have a look at the API or the source. This method does not accept any arguments. This method finds the nearest ancestor that allows scrolling. In other words, the. If you are not using jQuery UI but are using jQuery, then there are alternative independent libraries providing similar functionality, such as:.
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Method 1 - Smooth scrolling to an element inside an element
Using google chrome dev tools, when you've scrolled partially down the page, inspect the page, select the DOM node that you think might be the one that is being scrolled. This will print out the current scroll position of that element. If it is NOT 0 then you will know that that is the element that is being scrolled.