缩小以掩盖内容的面包屑

Question

我希望完成一些缩小面包屑的东西（希望没有 js...但我可以满足于 vanilla js）

我有未知数量的项目需要放入类似面包屑的东西（不可导航）

我想要的是

活动项目始终可读，如果项目足够少，它们都是可读的（即非活动选项卡缩放其宽度以适应可用宽度，在确保活动项目完全可见后离开）我遵循一个教程并非常接近它（但我不知道如何缩放它）

我得到的是

/* BREADCRUMBS.CSS */
ul.breadcrumb {
  list-style: none;
  width: 460px;
  height: 40px;
  border-radius: 2px;
  border: solid 1px #d2d2d2;
}

ul.breadcrumb li {
  float: left;
  border-top: 1px solid #d2d2d2;
  border-bottom: 1px solid #d2d2d2;
  font: 14px Roboto, "Helvetica Neue", sans-serif;
}
ul.breadcrumb li:first-of-type {
  border-left: 1px solid #d2d2d2;
}

ul.breadcrumb li span.inner {
  overflow: hidden;
  direction: rtl;
  white-space: nowrap;
  /* keeps everything on one line */
  width: 100%;
}

ul.breadcrumb li {
  color: #4a4a4a;
  font-weight: bold;
  text-decoration: none;
  padding: 10px 0 10px 40px;
  background: #F5F5F5;
  position: relative;
  display: block;
  min-width: 10px;
  float: left;
  padding-right: 1em;
}

ul.breadcrumb li.active {
  color: #396d9a;
  background: white;
  min-width: 150px;
}

ul.breadcrumb li::before {
  content: " ";
  display: block;
  width: 0;
  height: 0;
  border-top: 22px solid transparent;
  border-bottom: 21px solid transparent;
  border-left: 12px solid #d2d2d2;
  position: absolute;
  top: 50%;
  margin-top: -22px;
  margin-left: 1px;
  left: 100%;
  z-index: 1;
}

ul.breadcrumb li::after {
  content: " ";
  display: block;
  width: 0;
  height: 0;
  border-top: 22px solid transparent;
  /* Go big on the size, and let overflow hide */
  border-bottom: 21px solid transparent;
  border-left: 12px solid #F5F5F5;
  position: absolute;
  top: 50%;
  margin-top: -22px;
  left: 100%;
  z-index: 2;
}

ul.breadcrumb li.active::after {
  border-left: 12px solid white;
}

ul.breadcrumb li:last-child {
  border-right: 1px solid #d2d2d2;
  padding-right: 1em;
}
ul.breadcrumb li:last-child::before {
  display: none;
  border: none;
}
ul.breadcrumb li:last-child::after {
  display: none;
  border: none;
}

<!-- breadcrumbs.html  !-->
Example 1. Works fine with a couple of items
<ul class="breadcrumb ng-star-inserted">
  <li class="active ng-star-inserted"><span class="inner">CLEAN DEVICE</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
</ul>

<hr/>

How Do i make inactive items shrink (and hide text as needed) so they all fit on the same row? while keeping the active tabs text visible
<ul class="breadcrumb ng-star-inserted">
  <li class="active ng-star-inserted"><span class="inner">CLEAN DEVICE</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
    <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
</ul>

（顺便说一句，我没有与这里的任何概念结合（即如果使用 ul 以外的元素更容易））...基本上我在 css 方面很糟糕 :(

Answer 1

您可以为此尝试 flexbox：

将 display: flex 添加到 ul（可选地覆盖其默认填充），
将 flex: 0 0 auto 添加到第一个和最后一个 li （这是一个 shorthand 表示 flex 项目 不应增大或缩小，而应仅采用其 auto 宽度），
并可选择删除第一个 li 的 min-width。

参见下面的演示：

/* BREADCRUMBS.CSS */
ul.breadcrumb {
  list-style: none;
  width: 460px;
  height: 40px;
  border-radius: 2px;
  border: solid 1px #d2d2d2;
  display: flex; /* added */
  padding: 0; /* added */
}

ul.breadcrumb li {
  float: left;
  border-top: 1px solid #d2d2d2;
  border-bottom: 1px solid #d2d2d2;
  font: 14px Roboto, "Helvetica Neue", sans-serif;
}
ul.breadcrumb li:first-of-type {
  border-left: 1px solid #d2d2d2;
}

ul.breadcrumb li span.inner {
  overflow: hidden;
  direction: rtl;
  white-space: nowrap;
  /* keeps everything on one line */
  width: 100%;
}

ul.breadcrumb li {
  color: #4a4a4a;
  font-weight: bold;
  text-decoration: none;
  padding: 10px 0 10px 40px;
  background: #F5F5F5;
  position: relative;
  display: block;
  min-width: 10px;
  float: left;
  padding-right: 1em;
}

ul.breadcrumb li.active {
  color: #396d9a;
  background: white;
  /*min-width: 150px;*/
  flex: 0 0 auto; /* added */
}

ul.breadcrumb li::before {
  content: " ";
  display: block;
  width: 0;
  height: 0;
  border-top: 22px solid transparent;
  border-bottom: 21px solid transparent;
  border-left: 12px solid #d2d2d2;
  position: absolute;
  top: 50%;
  margin-top: -22px;
  margin-left: 1px;
  left: 100%;
  z-index: 1;
}

ul.breadcrumb li::after {
  content: " ";
  display: block;
  width: 0;
  height: 0;
  border-top: 22px solid transparent;
  /* Go big on the size, and let overflow hide */
  border-bottom: 21px solid transparent;
  border-left: 12px solid #F5F5F5;
  position: absolute;
  top: 50%;
  margin-top: -22px;
  left: 100%;
  z-index: 2;
}

ul.breadcrumb li.active::after {
  border-left: 12px solid white;
}

ul.breadcrumb li:last-child {
  border-right: 1px solid #d2d2d2;
  padding-right: 1em;
  flex: 0 0 auto; /* added */
}
ul.breadcrumb li:last-child::before {
  display: none;
  border: none;
}
ul.breadcrumb li:last-child::after {
  display: none;
  border: none;
}

<!-- breadcrumbs.html  !-->
Example 1. Works fine with a couple of items
<ul class="breadcrumb ng-star-inserted">
  <li class="active ng-star-inserted"><span class="inner">CLEAN DEVICE</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
</ul>

<hr/>

How Do i make inactive items shrink (and hide text as needed) so they all fit on the same row? while keeping the active tabs text visible
<ul class="breadcrumb ng-star-inserted">
  <li class="active ng-star-inserted"><span class="inner">CLEAN DEVICE</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
    <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
</ul>

Answer 2

一种方法是使用 flex-box 来根据需要实现面包屑元素的自适应大小。

此外，要实现淡出效果，您可以在 pending 列表项的内部跨度上引入一个伪元素，该元素具有从透明渐变为背景灰色的 linear-gradient。

下面的 CSS 调整应该可以达到您的要求：

/* Use flex box to auto size width of breadcrumb elements */
ul.breadcrumb {
  display:flex;
  flex-direction:row;
}

/* Update styling of inner span to position with absolute so
that left and right extents can be set */
ul.breadcrumb li.pending span.inner {
  position:absolute;
  width:unset;
  left:1.5rem;
  right:0;
  direction:ltr;
}

/* Create pseudo element on inner span which overlays graidient
to achieve fade-out effect */
ul.breadcrumb li.pending span::after {
  content: '';
    display: block;
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, transparent,#F5F5F5);
}

/* BREADCRUMBS.CSS */
ul.breadcrumb {
  list-style: none;
  width: 460px;
  height: 40px;
  border-radius: 2px;
  border: solid 1px #d2d2d2;
}

ul.breadcrumb li {
  float: left;
  border-top: 1px solid #d2d2d2;
  border-bottom: 1px solid #d2d2d2;
  font: 14px Roboto, "Helvetica Neue", sans-serif;
}
ul.breadcrumb li:first-of-type {
  border-left: 1px solid #d2d2d2;
}

ul.breadcrumb li span.inner {
  overflow: hidden;
  direction: rtl;
  white-space: nowrap;
  /* keeps everything on one line */
  width: 100%;
}

ul.breadcrumb li {
  color: #4a4a4a;
  font-weight: bold;
  text-decoration: none;
  padding: 10px 0 10px 40px;
  background: #F5F5F5;
  position: relative;
  display: block;
  min-width: 10px;
  float: left;
  padding-right: 1em;
}

ul.breadcrumb li.active {
  color: #396d9a;
  background: white;
  min-width: 150px;
}

ul.breadcrumb li::before {
  content: " ";
  display: block;
  width: 0;
  height: 0;
  border-top: 22px solid transparent;
  border-bottom: 21px solid transparent;
  border-left: 12px solid #d2d2d2;
  position: absolute;
  top: 50%;
  margin-top: -22px;
  margin-left: 1px;
  left: 100%;
  z-index: 1;
}

ul.breadcrumb li::after {
  content: " ";
  display: block;
  width: 0;
  height: 0;
  border-top: 22px solid transparent;
  /* Go big on the size, and let overflow hide */
  border-bottom: 21px solid transparent;
  border-left: 12px solid #F5F5F5;
  position: absolute;
  top: 50%;
  margin-top: -22px;
  left: 100%;
  z-index: 2;
}


ul.breadcrumb li.active::after {
  border-left: 12px solid white;
}

ul.breadcrumb li:last-child {
  border-right: 1px solid #d2d2d2;
  padding-right: 1em;
}
ul.breadcrumb li:last-child::before {
  display: none;
  border: none;
}
ul.breadcrumb li:last-child::after {
  display: none;
  border: none;
}

<!-- breadcrumbs.html  !-->
Example 1. Works fine with a couple of items
<ul class="breadcrumb ng-star-inserted">
  <li class="active ng-star-inserted"><span class="inner">CLEAN DEVICE</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
</ul>

<hr/>

How Do i make inactive items shrink (and hide text as needed) so they all fit on the same row? while keeping the active tabs text visible
<ul class="breadcrumb ng-star-inserted">
  <li class="active ng-star-inserted"><span class="inner">CLEAN DEVICE</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
    <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
  <li class="pending ng-star-inserted"><span class="inner">Reading</span></li>
</ul>

缩小以掩盖内容的面包屑

Breadcrumbs that shrink to mask content

css

sass

breadcrumbs