This article will introduce a new feature, starting from Chrome 90, a new feature added to overflow - overflow: clip
, use it to easily control the overflow direction.
overflow: clip Why
First, let’s briefly introduce the usage of overflow: clip
.
overflow: clip
: is very similar to overflow: hidden
. It also clips the padding-box
of the element. [Learning video sharing: css video tutorial, web front-end]
However, they have two differences:
That is,
overflow: clip
completely prohibits any form of scrolling internally. Of course, this is not the focus of today, so let’s skip it for now.
##MDN Original text: The difference between clip and hidden is that the clip keyword also forbids all scrolling, including programmatic scrolling.
overflow: clip
can control clipping from the x and y axis directions, but
overflow: hiddencannot.
overflow: clip && overflow: hidden performance
Let’s look at the performance of not distinguishing directions,overflow: clip Expression form with
overflow: hidden:
<div> <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. </p> </div> <div> <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. </p> </div> <div> <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. </p> </div>
.hidden { overflow: hidden; } .clip { overflow: clip; }We set up 3 DIV containers, one of which does not set overflow, and the other two set
overflow: clip and
overflow: hidden. The effect is as follows:
overflow: clip behaves the same as
overflow: hidden.
overflow: clip can be set individually on the x/y axis
However, overflow: clip is unique The difference is that it can be set to the x-axis or y-axis separately, so that the container has the ability to crop in a certain direction, while allowing overflow in the other direction.
- Single settings
overflow -x: hidden
or
overflow-y: hidden, the expression is consistent with
overflow: hidden, which is all-round cropping
- And the horizontal x or vertical y direction
overflow-x: clip
/
overflow-y: clipmatches the other direction
overflow-x: visible, but it can allow overflow in one direction and crop in one direction!
- Setting
overflow: hidden
will create a BFC, so there is no way to just Limit one direction;
overflow: clipdoes not create BFC, so they will produce inconsistent phenomena in many performances (for example)
- overflow-x/y When set to hidden, overflow-y/x will become auto, even if it is set to visible
CodePen Demo -- overflow: hidden & overflow: clip
At this point, we have achieved such an effect, allowing one-way clipping of elements in the x/y direction, like this:
Cropping in the upper, lower, left, and right directions
OK, then, if we go further. For example, if there is a requirement that overflow is allowed in the upper, left, and right directions, but cropping is required in the lower direction, can this be achieved? The answer is yes. There are actually many ways to cut elements in CSS, and the approximate implementation is similar to the function ofoverflow: hidden.
clip-path to achieve single-directional clipping of top, bottom, left, and right. This is the content of my previous article -
How to implement overflow: hidden without using overflow: hidden. If you are interested, you can take a look.
Original address: https://www.cnblogs.com/coco1s/p/16627152.htmlAuthor: ChokCoco
For more programming related knowledge, please visit: Programming Video! !
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