如果没有点击链接，则显示所有div [英] Show all div if none of link clicked

问题描述

当我转到页面时，我有一个页面名称url.com/yourfirstpage/默认情况下隐藏所有div（显示：无）
如果我们将＃sec1定位为url.com/yourfirstpage/#sec1它只显示sec1并隐藏其他人。
我想知道我们是否在没有像url.com/yourfirstpage/这样的锚ID的情况下去了网址，它需要显示所有的div。

I have a page name url.com/yourfirstpage/ when i go to the page all the div are hidden by default (display:none) if we target #sec1 as url.com/yourfirstpage/#sec1 it only displays sec1 and hide others. I was wondering if we go the url without having anchor id like url.com/yourfirstpage/ it needs to show all the divs.

#sec1, #sec2, #sec3{
	display:none;
}
#sec1:target{
	display:block;
}
#sec2:target{
	display:block;
}
#sec3:target{
	display:block;
}

<a href="#sec1">sec1</a>
<a href="#sec2">sec2</a>
<a href="#sec3">sec3</a>

<div id="sec1" class="page"> this is sec1</div>
<div id="sec2" class="page"> this is sec2</div>
<div id="sec3" class="page"> this is sec3</div>

推荐答案

如果您能够修改HTML结构，这是一个技巧。我们的想法是让元素可见，然后使用：target 隐藏它们。由于我们没有先前的兄弟选择器或父选择器，因此我在父元素中使用id来选择任何元素：

Here is a trick in case you are able to modify your HTML structure. The idea is to have the elements visible and then we hide them using :target. Since we don't have previous sibling selector or parent selector, I used id within a parent element to be able to select any element:

#sec1:target .page:nth-child(n+2){
  display: none;
}

#sec2:target .page:nth-child(2n+1){
  display: none;
}

#sec3:target .page:nth-last-child(n+2){
  display: none;
}

<a href="#sec1">sec1</a>
<a href="#sec2">sec2</a>
<a href="#sec3">sec3</a>

<div id="sec1">
  <div id="sec2">
    <div id="sec3">
      <div class="page"> this is sec1</div>
      <div class="page"> this is sec2</div>
      <div class="page"> this is sec3</div>
    </div>
  </div>
</div>

它可以工作任意数量的部分，我们可以改进CSS代码如下：

It can work with any number of sections and we can improve the CSS code as follow:

#sec1:target .page:not(:nth-child(1)),
#sec2:target .page:not(:nth-child(2)),
#sec3:target .page:not(:nth-child(3)),
#sec4:target .page:not(:nth-child(4)),
#sec5:target .page:not(:nth-child(5)) {
  display: none;
}

<a href="#sec1">sec1</a>
<a href="#sec2">sec2</a>
<a href="#sec3">sec3</a>
<a href="#sec4">sec4</a>
<a href="#sec5">sec5</a>

<div id="sec1">
  <div id="sec2">
    <div id="sec3">
      <div id="sec4">
        <div id="sec5">
          <div class="page"> this is sec1</div>
          <div class="page"> this is sec2</div>
          <div class="page"> this is sec3</div>
          <div class="page"> this is sec4</div>
          <div class="page"> this is sec5</div>
        </div>
      </div>
    </div>
  </div>
</div>

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