Prevent snapback to original position in iScroll4 - javascript

I'm using iScroll4 to make a certain element scrollable in my webpage but it snaps back to the original position once you release the mouse/touch. How do I make it stay instead?

I think that I have figured out why this happens. I had iscroll4 working in a Phonegap app that I was building, and then broke it after changing some CSS. At the time, I didn't realize what I had done and I spent a long time hunting for a Javascript solution.
Finally, I noticed that when I tested it in a browser, there was a scrollbar for the list where I was using iscroll4. And when I tried to scroll, the scrollbar thumb changed size. That is why it was snapping back. The browser made the wrapper div big enough to hold the entire list, so whenever I tried to scroll, there was no hidden data so I triggered the pull-up event and then the browser resized the div.
I had to change the CSS to include overflow:hidden and it started to work again. I tried overflow:hidden on the ul tag and the scroller div but that didn't work. It has to be on the wrapper div.

Related

Scroll the page up or down after scrolling reaches the top or bottom of a scrollable element in mobile

I know this question sounds confusing, so here's a better explanation:
I'm using a mobile. Say there's a scrollable element somewhere in the body. When I scroll the element and it reaches the bottom, I want instead of getting stuck for keep scrolling the element, it scrolls the page instead. That's also true if I reach the top of the element, it scrolls up the page, not getting stuck.
I tested it on two different mobile phones with the latest version of Chrome. The First one does exactly that. Weirdly enough, the second one only works when it gets to the top but not to the bottom. Is there any way to make it always work irrespective of the environment (mobile phone or browser) we are using?
Edit: What I'm trying to achieve with this
Desktop:
I want a way so that the buttons placed at the bottom of the content are not so distanced from the user's view. If we remove the scrollbar, then the users have to scroll all the way to the end of the content to be able to click the buttons.
The problem with this method is that, on mobile, in some browsers, it blocks the user from scrolling the page, even after reaching the end of the element. So they have to touch the edges of the screen to be able to scroll the page instead of the element.
What I want is, for users having difficulty touching the edges, they can still scroll the element. And when it reaches the bottom of the element, it scrolls the page.
I know this is weird. I know some of the better tricks like using the Read More-Read Less button, but it requires JavaScript I guess? I'm in a situation that's really hard to use JavaScript at the moment (shortly because of how bad the code is organized), and looking for a way if there's a simple trick using pure CSS. Any help or idea is appreciated!

Use fullpage.js inside container

I'm trying to achieve the fullPage.js scrolling effect inside of a container element.
The best way to describe it is kind of embedding another page inside the viewport and apply fullPage.js to it only.
In the picture below you can see the viewport background color is actually grey-ish while the container object is white. So the actual viewport should be static, non-moving, while the container should be the real scrollable page.
I know this should be possible by vertically stacking up div's the same size as the container, setting overflow to hidden and then emulating a scroll effect using JS manually. However as fullPage.js is pretty reliable and featured I'd like to know if there's a little hack for this so I can save myself from all this work.
Kind regards :)
Image of what I'm trying to achieve
EDIT
Solved using the mousewheel event, an overflow-hidden inner container and GSAP. Turned out to be pretty simple actually :) Could need some tweaking with the y-Delta value to have more page switch scrolling threshold
Demo: https://jsfiddle.net/bva8g3u9/

When textbox is resized in IE, block position behavior is messed up

i am using the autoresize plugin which increases the height as users type in stuff. It works great on FF/Chrome, but the behavior is messed up on IE (see screenshots below).
Essentially, the textbox, when resized, does not push the rest of the buttons down, which is weird, given that nothing on the page is absolute positioned.
I suspect the button and span on the right are in a relatively positioned container? I've encountered the same problem recently with positioned elements and expanding/collapsing siblings. Still searching for a proper solution, but removing the positioning can be a temp fix.

I need some pointers on how to implement inertia

Ok, so I've created a little plugin that takes a bunch of elements and creates a sort of never ending list. I'll try to explain...
I have a div, and it's got about 20 elements tags in it. When the user scrolls up, the top element moves out of view and is moved to the bottom of the list. And vice-versa so that when the user scrolls down, the bottom element is moved to the top of the list.
This is specifically for Mobile Safari (iPad, iPhone) web content
What I would like to do is implement inertia so the scrolling slows to a halt in response to how fast or slow the user is scrolling when their finger leaves the screen. Just like the inertia commonly found in the iPhone / iPad UI.
The problem is, every time an element moves to the top or the bottom of the list, the scollTop value for the parent div is adjusted to make it look like all the elements are staying in the same place. Which means the scrollTop value is never more than the top elements total height. So there's no value I can think of that I can keep on manipulating to give the illusion of inertia.
I'm stumped. Does anyone have any suggestions?
iScroll implements scrolling with inertia, but I'm not sure how it would react to you adding and removing elements mid-scroll. Might be worth looking into though.

Is it possible to prevent just horizontal scrolling when overflow-x is hidden?

I have a web page that has content which extends past the right edge of the browser window. I set overflow-x: hidden on <body> to turn off the bottom scrollbar, but I can still scroll horizontally with the trackpad, which is not what I want.
Is there any way to prevent the browser from scrolling horizontally?
As a side note: Safari 4.0.4 only scrolls horizontally sometimes, and the scrolling feels "sticky" and "jumpy," whereas Firefox always smoothly scrolls horizontally.
you could try to set in CSS:
html{
overflow-x: hidden;
}
instead of use body selector.
I tried that and works in firefox.
I think the real question is, why do you have your content overflowing out of the intended size of the page? Is this content that you don't want users to actually see? In that case, put it in a div somewhere and set it's display to none. That would avoid the overflow issue entirely.
If there is a legit reason you want it to overflow the container, then set the size of the container explicitly, then the overflow-x to hidden. I haven't tested it, but that should prevent the current behavior. If not, try using a div, rather than the body tag. The browsers may be acting strangely because it's working on the body tag itself.
I would go into Chrome and open the developer tools on a desktop. Remove the overflow-x property. Then proceed to delete each parent element on your page. When you see that the horizontal scroll bar disappears, you know you have found your problem. Then dive into that element. My bet is you have a width of 100% and than a margin put onto it. Remove the margin if that is the case.
If all else fails, you could use Javascript to constantly force the browser to scroll to the left using window.scrollTo(xpos, ypos). For xpos you'll want to use 0 and ypos you'll want to get the user's current scroll position assuming you want to allow vertical scrolling.
You could put your function call either in the window.onscroll event handler, or in a javascript interval that runs every 100 ms or so. Up to you. If you need code examples just ask.
This would be better to understand if you had an example.
is this a long url or something with no whitespaces? Do you have white-space:nowrap; set on the element?
If you have a container with a defined size (one that fits in the viewport), the text should adhere correctly, (unless it's a long line with no spaces)
Old discussion, but it could be of use to people looking for the right answer !
Set "overflow:hidden" on the parent div of the element that is wider than the browser window (not html or body as you would normaly do), that will stop the scroll with de pad or the arrows pad...

Categories

Resources