这个问题扩展了'Separators For Navigation ' 通过询问,如何删除由视口(viewport)大小引起的换行符处的分隔符。
宽视口(viewport)-> Item 1 | Item 2 | Item 3 | Item 4 | Item 5 <-
小视口(viewport)
-> Item 1 | Item 2 | Item 3 <-
-> Item 4 | Item 5 <-
这是一个 fiddle ,显示管道如何保持在换行符处:
Fiddle .
我对纯 css 解决方案感兴趣,但如果 javascript 提供了唯一可能的解决方案,它也是可以接受的。
最佳答案
您可以利用尾随和行尾随空格自动折叠的事实:
document.write(
'word<b style="background: red; outline: 1px solid blue;"> </b>'
.repeat(42)
);
如您所见,单词之间有带有蓝色轮廓的红色空间,但行尾的最后一个和两个缺少红色区域,因为它的宽度折叠为零:这实际上是空白折叠。
可以使用 word-spacing
调整宽度并改用伪元素,因此设置内联 ::after { content: ' '; word-spacing: 2em; }
会为您提供宽内联矩形,该矩形可以装饰背景或边框,但在不在单词之间时会消失。
简化的用例(来自 https://codepen.io/myf/pen/dyOzpZM,仅在 2021-02 常绿 Firefox 和 Chromium 中进行了测试,将无法在 Chromium Edge 之前的版本中运行;有关更强大的示例,请参见下面的第二个片段):
ul {
text-align: center;
padding: 0;
}
li {
display: inline;
}
li::after {
/*
This has to be space, tab or other
breakable white-space character:
*/
content: " ";
word-spacing: 1em;
background-image: linear-gradient(
-0.2turn,
transparent 0 calc(50% - 0.03em),
currentcolor 0 calc(50% + 0.03em),
transparent 0
);
}
/*
That's it: just inline text
with styled ::after spaces
that collapse at line breaks
and at the end of the element.
That's basically how spaces work in text.
*/
/*
Unrelated whimsical effects:
*/
body { background: #456; color: #fed; min-height: 100vh; margin: 0; display: flex; align-items: center; }
ul { --dur: 3s; font-family: Georgia, serif; font-size: min(7vw, calc(100vh / 7)); margin: 0 auto; position: relative; padding: 0 1em; -webkit-text-fill-color: #999; text-transform: capitalize; animation: poing var(--dur) infinite alternate ease-in-out; }
@keyframes poing { from { max-width: 3.4em; } to { max-width: min(19em, calc(100vw - 2em)); color: lime; } }
ul::before, ul::after { -webkit-text-fill-color: currentcolor; position: absolute; top: 50%; transform: translatey(-50%); animation: calc(var(--dur) * 2) calc(var(--dur) * -1.5) infinite forwards linear; }
ul::before { content: "☜"; left: 0; animation-name: a !important; }
ul::after { content: "☞"; right: 0; animation-name: b !important; }
@keyframes a { 50% { content: "☛"; } }
@keyframes b { 50% { content: "☚"; } }
ul:hover, ul:hover::before, ul:hover::after { animation-play-state: paused; }
<ul>
<li>foo</li>
<li>bar</li>
<li>baz</li>
<li>gazonk</li>
<li>qux</li>
<li>quux</li>
</ul>
它使用带有单个单词项的平面列表,因此与现实世界的使用关系不大。适合导航的更现实的变体可能类似于 https://jsfiddle.net/vnudrsh6/7/ :
nav {
text-align: center;
padding-right: 1em; /* = li::after@word-spacing */
}
ul {
display: inline;
margin: 0;
padding: 0;
}
li {
display: inline;
/*
white-space: nowrap should be moved to child A
because IE fails to wrap resulting list completely
*/
}
li::before {
content: ' ';
/*
this content is important only for Chrome in case
the HTML will be minified with *no whitespaces* between </li><li>
*/
}
li::after {
content: ' ';
/*
this is actual placeholder for background-image
and it really must be space (or tab)
*/
white-space: normal;
word-spacing: 1em;
/*
= nav@padding-right - this actually makes width
*/
background-image: radial-gradient(circle, black, black 7%, transparent 15%, transparent 35%, black 45%, black 48%, transparent 55%);
background-size: 1em 1em;
background-repeat: no-repeat;
background-position: center center;
opacity: 0.5;
}
/*
no need to unset content of li:last-child::after
because last (trailing) space collapses anyway
*/
a {
white-space: nowrap;
display: inline-block; /* for padding */
padding: 1em;
text-decoration: none;
color: black;
transition-property: background-color;
transition-duration: 500ms;
}
a:hover {
background-color: #ccc;
}
/*
For demonstrative purposes only
Give items some content and uneven width
*/
nav:hover > ul > li {
outline: 3px dotted rgba(0,0,255,.5);
outline-offset: -3px;
}
nav:hover > ul > li::after {
opacity: 1;
background-color: rgba(255, 0, 0, .5);
}
nav:hover > ul > li:hover {
outline-style: solid;
}
nav:hover > ul > li:hover::after {
background-color: cyan;
}
nav:hover > ul > li > a {
outline: 3px solid rgba(0,255,0,.5);
outline-offset: -3px;
}
nav > ul {
counter-reset: c;
}
nav > ul > li {
counter-increment: c;
}
nav > ul > li > a::before {
content: counter(c, upper-roman) '. ';
letter-spacing: .3em;
}
nav > ul > li > a::after {
content: ' item ' counter(c, lower-roman);
word-spacing: .3em;
letter-spacing: .1em;
transform: translatex(.1em);
display: inline-block;
}
<nav>
<ul><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li><li><a href="#"></a></li>
</ul>
</nav>
<!-- For demonstrative purposes is content of links made by CSS
-->
此概念验证在每个 <li>
之后使用“最终折叠”CSS 生成内容的背景图像空格。 2016 年在 Firefox、Chrome 和 IE11 中测试。
其他值得注意的答案:
- This overlooked answer from 2014,早于我的。
- Same trick used here .
- Very impressive alternative using flex-box - 简单的过度延伸边界和不同的间距由于 flex 安排。
- 不同的方法 for left-aligned list using overflow hidden and real character in pseudo .
关于html - 水平列表的响应式分隔符,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37052659/