CSS：使用省略号截断标签，但始终显示“必需的指示器”

Question

我有一个使用Bootstrap3的标准类进行样式设计的水平形式。 但是，我还有另外三个要求：

• 标签应在包装后立即以“ ...”结尾
• 如果需要输入字段，则在标签的最后一个字母后应显示一个星号（*）。 并且不应受到截断的影响。
• 不得触摸HTML标记。 （T___T）

仅CSS解决方案有可能吗？ 大家好，谢谢！

 .control-label { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; } .form-group[required] > label:after { content: " * "; color: red; } 

 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous"> <form class="form-horizontal" style="max-width: 700px;"> <div class="form-group"> <label class="col-sm-2 control-label" for="inputEmail3">Email:</label> <div class="col-sm-10 controls"> <input type="email" id="inputEmail3" placeholder="Email"/> </div> </div> <div class="form-group" required> <label class="col-sm-2 control-label" for="inputRequired">Required:</label> <div class="col-sm-10 controls"> <input type="text" id="inputRequired" placeholder="Required"/> </div> </div> <div class="form-group" required> <label class="col-sm-2 control-label" for="inputRequired2">Required with long Label:</label> <div class="col-sm-10 controls"> <input type="text" id="inputRequired2" placeholder="Required with long Label"/> </div> </div> </form> 

Answer 1

您还可以制作自己的自定义“ truncate”类，并在需要时附加一个绝对的“ *”星号，如下所示：

https://jsfiddle.net/rrjruf82/

HTML：

<form>
  <div type='text' class='label truncate'> Add text here more more more     </div>
</form>

CSS：

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    -o-text-overflow: ellipsis;
    -ms-text-overflow: ellipsis;
}

.label {
  max-width: 120px;
  padding: 5px;
  position: relative;
}

.label:after {
  position: absolute;
  right: -3px;
  top: 4px;
  content: '*';
  color: red;
  width: 10px;
  display: inline-block;
}

Answer 2

您应该对星号遵循以下规则。 像这样：

.form-group[required] > label:after {
   content: " * ";
   color: red;
   overflow: visible;
   white-space: normal;
   text-overflow: clip;
}

我建议您也将它放在绝对位置上。

Answer 3

更新

抱歉，出于某种原因，从未想过需要冗长的标签（“冗长的标签”不是矛盾的意思吗？）。 我已经修改了答案，以更好地满足您的需求。 它涉及一些JS，但是比我预期的要好。 基本思想是这样的：

• 在<label>内添加一个内联元素（例如<span> ， <i> ， <b>等）

• 现在，通过:after伪类将大男子主义asteriX插入<label>内时，它将被放置在内联元素之后。

• 因此，此元素用作“缓冲区”，以保护强壮男子免受覆盖。

片段2

 var fgrp = document.querySelectorAll('.form-group')[2]; var clbl = document.querySelectorAll('.control-label')[2]; var atX = document.createElement('span'); fgrp.classList.add('ellipse'); clbl.appendChild(atX); 

 .control-label { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; } .form-group[required] > label:after { content: " ✱ "; color: red; } .ellipse *:last-of-type { display: block; position: relative; outline: 0; text-overflow: ellipsis; overflow: hidden; white-space: nowrap; vertical-align: middle; width: 100%; } 

 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous"> <form class="form-horizontal" style="max-width: 700px;"> <div class="form-group"> <label class="col-sm-2 control-label" for="inputEmail3">Email:</label> <div class="col-sm-10 controls"> <input type="email" id="inputEmail3" placeholder="Email"/> </div> </div> <div class="form-group" required> <label class="col-sm-2 control-label" for="inputRequired">Required:</label> <div class="col-sm-10 controls"> <input type="text" id="inputRequired" placeholder="Required"/> </div> </div> <div class="form-group" required> <label class="col-sm-2 control-label" for="inputRequired2">Required with long Label~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~:</label> <div class="col-sm-10 controls"> <input type="text" id="inputRequired2" placeholder="Required with long Label"/> </div> </div> </form> 

---

旧

我使用的技术是简单的CSS。 我使用JS只是生成一些段落来演示椭圆。 这就是我处理受限的HTML / JS使用时的方式。 ：P

顺便说一句，我用那个小星号换了一个男子气概的V8 1000马力asteriX。

片段1

 var text = ['Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt.', 'Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur?', 'At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio.', 'Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Temporibus autem quibusdam et aut officiis debitis aut rerum necessitatibus saepe eveniet ut et voluptates repudiandae sint et molestiae non recusandae.', 'Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat. Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima', 'Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?' ]; var s = document.createElement('section'); s.classList.add('ellipse'); document.body.appendChild(s); for (var i = 0; i < text.length; i++) { var p = document.createElement('p'); p.innerHTML = text[i]; s.appendChild(p); } 

 /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ html { box-sizing: border-box; font: 500 16px/1.428'Raleway'; height: 100vh; width: 100vw; } *, *:before, *:after { box-sizing: inherit; margin: 0; padding: 0; } body { position: relative; font-size: 1rem; line-height: 1; height: 100%; width: 100%; overflow-x: hidden; overflow-y: scroll; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } form { margin: 50px 20px; } /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ .control-label { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; } .form-group[required] > label:after { content: " ✱ "; color: red; } /* Demo #3~~~~~~~~~~~~~~~*/ .ellipse *:last-of-type { display: block; position: relative; outline: 0; text-overflow: ellipsis; overflow: hidden; white-space: nowrap; vertical-align: middle; width: 100%; } p { white-space: pre-wrap; width: 80%; max-width: 400px; position: relative; } section { padding: 20px; } /*~~~~~~~~~~~~~~~~~~~~~~~~~~*/ 

 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous"> <form class="form-horizontal" style="max-width: 700px;"> <div class="form-group"> <label class="col-sm-2 control-label" for="inputEmail3">Email:</label> <div class="col-sm-10 controls"> <input type="email" id="inputEmail3" placeholder="Email" /> </div> </div> <div class="form-group" required> <label class="col-sm-2 control-label" for="inputRequired">Required:</label> <div class="col-sm-10 controls"> <input type="text" id="inputRequired" placeholder="Required" /> </div> </div> <div class="form-group" required> <label class="col-sm-2 control-label" for="inputRequired2">Required with long Label:</label> <div class="col-sm-10 controls"> <input type="text" id="inputRequired2" placeholder="Required with long Label" /> </div> </div> </form>