下划线设置了单词间距的段落

Question

在带下划线的元素中使用单词间距时，如果该元素包含跨度，则空格未正确加下划线，使其变得非常丑陋...

有没有解决的办法？

p {
  text-decoration: underline;
  word-spacing: 1em;
}

<p>
  <span>test</span> <span>test</span>
</p>
<p>
  test test
</p>

编辑：

我发现这个技巧几乎可以满足我的用例：

p {
  text-decoration-line: underline;
}
span:after {
  content: ' ';
  letter-spacing: 1em;
}

<p>
  <span>test</span>
  <span>test</span>
</p>

问题是我想在零宽度的空格中使用它，例如\ u200B，但是由于某些原因，它不起作用。也许我做错了...

p {
  text-decoration-line: underline;
}
span:after {
  content: '\200B';
  letter-spacing: 1em;
}

<p>
  <span>test</span>
  <span>test</span>
</p>

Answer 1

一种解决方法是删除跨度之间的空白，并使用带有伪元素的 hack 来模拟word-spacing。它可以工作，但仍然是一个棘手的解决方案：

p {
  text-decoration: underline;
  word-spacing: 1em;
  display:flex; /*remove white space*/
}

span:not(:last-child)::after {
  content:"\00a0";
}

<p>
  <span>test</span> <span>test</span>
</p>
<p>
  test test
</p>

如果您只有跨度，则可以这样做：

p {
  text-decoration: underline;
}

span:not(:last-child)::after {
  content:" ";
  letter-spacing: 1em;
}

<p>
  <span>test</span> <span>test</span>
</p>

Answer 2

寻找正确的解决方法...

要解决Chrome中的问题，一种快速的解决方法是用 替换空格，但这仅适用于一行文本。如果文本不能放在一行中，它将溢出父元素，而不是分成多行：

p {  
  text-decoration: underline;
  word-spacing: 1em;
  width: 33.33333333%;
  border-right: 3px solid black;
  padding: 10px;
  margin: 0;
}

<p>
  <span>test</span>&nbsp;<span>test</span>
</p>

<p>
  <span>test</span>&nbsp;<span>test</span>&nbsp;<span>test</span>&nbsp;<span>test</span>&nbsp;<span>test</span>&nbsp;<span>test</span>&nbsp;<span>test</span>&nbsp;<span>test</span>&nbsp;<span>test</span>&nbsp;<span>test</span>
</p>

另一种解决方法是将zero-width space添加到混音中： ​，但是由于 ，您可以看到下划线现在在文本之前或之后延伸。同时显示并带有下划线：

p {  
  text-decoration: underline;
  word-spacing: 1em;
  width: 33.33333333%;
  border-right: 3px solid black;
  padding: 10px;
  margin: 0;
}

<p>
  <span>test</span>&nbsp;&#8203;<span>test</span>&nbsp;&#8203;<span>test</span>&nbsp;&#8203;<span>test</span>&nbsp;&#8203;<span>test</span>&nbsp;&#8203;<span>test</span>&nbsp;&#8203;<span>test</span>&nbsp;&#8203;<span>test</span>&nbsp;&#8203;<span>test</span>&nbsp;&#8203;<span>test</span>
</p>

<p>
  <span>test</span>&#8203;&nbsp;<span>test</span>&#8203;&nbsp;<span>test</span>&#8203;&nbsp;<span>test</span>&#8203;&nbsp;<span>test</span>&#8203;&nbsp;<span>test</span>&#8203;&nbsp;<span>test</span>&#8203;&nbsp;<span>test</span>&#8203;&nbsp;<span>test</span>&#8203;&nbsp;<span>test</span>
</p>

✨救援空间+零宽度空间

好像我们要到达某处...由于我们不希望 在行的末尾或行首显示，因此我们使用普通空格和零宽度空格：​：

p {  
  text-decoration: underline;
  word-spacing: 1em;
  width: 33.33333333%;
  border-right: 3px solid black;
  padding: 10px;
  margin: 0;
}

<p>
  <span>test</span>&#8203; <span>test</span>
</p>

<p>
  <span>test</span>&#8203; <span>test</span>&#8203; <span>test</span>&#8203; <span>test</span>&#8203; <span>test</span>&#8203; <span>test</span>&#8203; <span>test</span>&#8203; <span>test</span>&#8203; <span>test</span>&#8203; <span>test</span>
</p>

使用其他HTML元素获得其他下划线自定义/样式选项

另一种选择是使用包装元素通过border或box-shadow创建下划线，这也将允许您具有一些其他的自定义/样式选项，如您所见。例子：

p {
  word-spacing: 1em;
  width: 33.33333333%;
  border-right: 3px solid black;
  padding: 10px;
  margin: 0;
  float: left;
  box-sizing: border-box;
}

p:nth-child(3n) {
  border: none;
}

.fakeUnderline1 {
  border-bottom: 2px solid black;
  transition: border-bottom ease-in 75ms;
}

.fakeUnderline1:hover {
  border-bottom-color: cyan;
}

.fakeUnderline2 {
  border-bottom: 1px solid black;
  transition: border-bottom ease-in 75ms;
}

.fakeUnderline2:hover {
  border-bottom-width: 3px;
}

.fakeUnderline3 {
  box-shadow: inset 0 -2px 0 0 yellow;
  transition: box-shadow ease-in 75ms;
}

.fakeUnderline3:hover {
  box-shadow: inset 0 -16px 0 0 yellow;
}

.fakeUnderline4 {
  overflow: hidden;
  box-shadow: 0 2px 2px -3px red;
  transition: box-shadow ease-in 75ms;
}

.fakeUnderline4:hover {
  box-shadow: 0 5px 5px -5px red;
}

.fakeUnderline5 {
  border-bottom: 1px dotted black;
  transition: border-bottom ease-in 75ms;
}

.fakeUnderline5:hover {
  border-bottom-style: solid;
}

.fakeUnderline6 {
  border-bottom: 2px solid blue;
  box-shadow: inset 0 -2px 0 0 red;
}

.fakeUnderline6:hover {
  border-bottom-color: red;
  box-shadow: inset 0 -2px 0 0 blue;
}

.fakeUnderline7 {
  text-decoration: underline;
}

<p>
  <span class="fakeUnderline1">
    <span>test</span> <span>test</span> <span>test</span> <span>test</span>
    <span>test</span> <span>test</span> <span>test</span> <span>test</span>
    <span>test</span> <span>test</span>
  </span>
</p>

<p>
  <span class="fakeUnderline2">
    <span>test</span> <span>test</span> <span>test</span> <span>test</span>
    <span>test</span> <span>test</span> <span>test</span> <span>test</span>
    <span>test</span> <span>test</span>
  </span>
</p>

<p>
  <span class="fakeUnderline3">
    <span>test</span> <span>test</span> <span>test</span> <span>test</span>
    <span>test</span> <span>test</span> <span>test</span> <span>test</span>
    <span>test</span> <span>test</span>
  </span>
</p>

<p>
  <span class="fakeUnderline4">
    <span>test</span> <span>test</span> <span>test</span> <span>test</span>
    <span>test</span> <span>test</span> <span>test</span> <span>test</span>
    <span>test</span> <span>test</span>
  </span>
</p>

<p>
  <span class="fakeUnderline5">
    <span>test</span> <span>test</span> <span>test</span> <span>test</span>
    <span>test</span> <span>test</span> <span>test</span> <span>test</span>
    <span>test</span> <span>test</span>
  </span>
</p>

<p>
  <span class="fakeUnderline6">
    <span>test</span> <span>test</span> <span>test</span> <span>test</span>
    <span>test</span> <span>test</span> <span>test</span> <span>test</span>
    <span>test</span> <span>test</span>
  </span>
</p>

即使问题不是关于下划线样式的，也请注意，如果您只需要一些基本的下划线样式选项并且浏览器支持不是问题，则可以使用这些属性代替上面的解决方案：

• text-decoration-color
• text-decoration-line
• text-decoration-style
• text-underline-position

一旦支持以下实验功能，就会出现更复杂的行为：

• text-decoration-skip
• text-decoration-skip-ink