面包屑缩小以掩盖内容

Question

我希望能够完成一些缩小的面包屑的东西（希望没有js ...但我可以满足于香草js）

我有一个未知数量的物品，需要像面包屑一样（不可导航）

我想要的是

活动项总是可读的，如果有足够的项目，它们都是可读的（即非活动选项卡缩放它们的宽度以适应可用宽度，在确保活动项完全可见后离开）我已经按照教程进行了操作非常接近（但我无法弄清楚如何缩放它）

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>

（顺便说一下，我没有嫁给这里的任何概念（即如果这对于ul以外的元素更容易））... ...基本上我只是在css很糟糕:(

Answer 1

您可以尝试使用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（这是一个简写，表示flex项不应该增长或缩小但只采用其自动宽度），
• 并任选地删除第一个min-width的li。

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调整。

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

下面的CSS调整应该达到你的要求：

/* 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>