ComputersInformation Technology

Dynamic scrolling is what?

The idea of scrolling is old as the computer world. The first computers, the first operating systems and stable "barriers began" the computer age: 640K of memory at the computer and 80x25 at the size of the text screen (graphic mode is a special case). Scrolling did not notice the keyboard, but managed to give the wheel to the mouse.

Modern ideas about scrolling - not a couple of its history, and what will happen next - even more interesting. A common opinion on the subject: "Scrolling is what?" Is a way to bring information to pieces in the visible area, smoothly, page by page, with scroll bars or with buttons for moving content, vertically or horizontally.

The classical idea

Today, scrolling is usually associated with the browser window or the area of the block element that allows scrolling. The flow of information can go beyond the selected visible area and only a part of it can be displayed. Naturally, you need scrollbars to the left and right (horizontally) up-down (vertically) or the buttons for moving on the content.

Push-button scrolling is something simpler and more compact in terms of implementation, it occurs no less often - it has its own niche in which the scroll bars can not be managed.

Sometimes the ability to do scrolling (HTML) is placed on the mouse or touchpad of the laptop, but in the modern classical idea it's all the same scrollbars: on the right - vertical, at the bottom - horizontal. Only vertical movement is available to the mouse wheel, and the rest is a click on the scroll bar and finger movements on the screen of a smartphone or other device.

An important feature of the classical idea is the scrolling of information. As in the table: the header should be in place, and the rows of the table should move. Static can be any piece of information on the screen. It all depends on the application, task and skill of the developer.

A block tag can have its own scroll bars outside the entire page that is open in the browser. The developer can both block the movement of information, and make smooth scrolling, or give it some other movement effect.

It is not necessary that the scroll bars will be only on the right and below. Many developers make their own scroll bar options and do not always attach them to the side of the browser window or the block element. Some people prefer to take control of scrolling into an independent element. This can be determined by the scope or architecture of the hardware - after all, not all computers are equipped with only a keyboard and mouse, there are other control devices.

Collisions of the classical genre

The difference between mobile devices from the "keyboard-muscle": the operation of fingers, the position (and / or rotation and movement of the device) and the voice from the keyboard and mouse buttons (movement, clicks, wheel) - known problems: crossbrowser, adaptability ... For all It has long been these or other solutions.

But when, for example, a million documents fly through the search engine, the scroll is organized, and only one interested in the visitor, who also went scrolling, how to scroll through all the documents, when the visitor was disappointed in the current document, and his window still Not closed? How to do scrolling in scrolling, how much recursion is implemented here, and how great are the chances to move semantically parallel across all levels of scrolling?

Parallax and adaptive thoughts

The modern developer pursues, not always, the idea - to carry the good and the eternal in the form in which it is claimed. Often, not because he does not want it, just a resource base (mainly instrumental and semantic) is still largely limited. Scrolling every day more and more problems.

The idea of scrolling with parallax effect is very interesting, it looks great, eats a lot of resources and is absolutely not adaptable to changing information, its structure and content.

Beauty, indeed, always requires sacrifice - both in real life and in computer science, but the visitor in real life "always has" scrolling in the right version and never thinks about where to do horizontal scrolling, and where one can do it vertically.

Actually, in reality, a person is not used to refer what he does to moving through information through a window or a window. The concept of scrolling is something from the world of computer monitors, on which the variety of information is not completely in place, therefore it is necessary to be satisfied with many things through a small amount.

Parallax and its implementation

Today, there are a lot of scrolling implementations using the parallax effect. A good example: the implementation of the company SONY, which, according to many, is very decent. Perhaps, already a sufficient number of developers have spent a lot of time and created a lot of options for quickly changing one information against the background of a slow change in the other.

Recommendations for using parallax effects implementations usually begin with a general desire to hang them on a couple of elements so as not to irritate the visitor with the slowness of the information visualization process. In general, this is an unnecessary rule. Looking at another implementation is so interesting that you can even forget about why you came.

A pair of parallax effect and scrolling is something, undoubtedly, bright, but the question is different. Information is inherent in dynamics. This means that smart parallax can be unclaimed if something goes wrong. If the search engine changes its output, it will have to be changed in its parsing, this will lead to the need to change the presentation forms of information, and so on.

The problem here lies in the peculiarities of the modern style of writing programs. All means are excellent, full-featured and powerful. Experience and knowledge are real and significant. But the information is changeable, it lives its own life, and the tasks and areas of application have to be adjusted for it.

Evolution dynamics, example

Search is one of the main concerns of the Internet. Let's leave out of attention the duty of search engines to wool the expanses of the Internet in search of changed information, agree: scrolling is something static according to the logic of things.

If scrolling has started in the browser window, and even more so when an item within this scrolling has undergone another scrolling, the change in the search result does not matter.

In fact, it should be different. Information on which scrolling is performed is something other than it was in the beginning, its volume and content can always vary. The visitor, however, is deprived of the opportunity to learn about this. The only option for him is to start everything from the beginning.

About scrolling the nearest time

Of course, as long as the window to the world of information is a browser and block elements on the pages, physically it is a screen of a monitor, tablet, smartphone or other device, the need for scrolling will remain and will make sense (how to show information through the window, how to optimize Window and information management in it).

However, no less important is the addition of this doctrine to the need to ensure the dynamics of the information to be displayed.

Scrolling is something dynamic, that is, not a window with bars / scroll / movement buttons, it is a tool for accessing information of a certain content (perhaps also a structure, but at least implementing the dynamics of content ...).

The content varies, its volume too. If the content element is in the view of the visitor, he should receive a message about this, as well as that in the viewed, there have already been changes, but generally on the content band (this is not horizontal scrolling and not vertical, but contentful) has Place information movement.

In general, parallax is parallax, and modern scrolling is at least three bands and one indicator, ... The two lanes come with a content lane, and the indicator tells the visitor: "Everything you see, sir, has changed a long time ago."

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