CSS：使用省略號截斷標簽，但始終顯示“必需的指示器”

Question

我有一個使用Bootstrap3的標准類進行樣式設計的水平形式。 但是，我還有另外三個要求：

• 標簽應在包裝后立即以“ ...”結尾
• 如果需要輸入字段，則在標簽的最后一個字母后應顯示一個星號（*）。 並且不應受到截斷的影響。
• 不得觸摸HTML標記。 （T___T）

僅CSS解決方案有可能嗎？ 大家好，謝謝！

 .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

您還可以制作自己的自定義“ truncate”類，並在需要時附加一個絕對的“ *”星號，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

您應該對星號遵循以下規則。 像這樣：

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

我建議您也將它放在絕對位置上。

Answer 3

更新

抱歉，出於某種原因，從未想過需要冗長的標簽（“冗長的標簽”不是矛盾的意思嗎？）。 我已經修改了答案，以更好地滿足您的需求。 它涉及一些JS，但是比我預期的要好。 基本思想是這樣的：

• 在<label>內添加一個內聯元素（例如<span> ， <i> ， <b>等）

• 現在，通過:after偽類將大男子主義asteriX插入<label>內時，它將被放置在內聯元素之后。

• 因此，此元素用作“緩沖區”，以保護強壯男子免受覆蓋。

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> 

---

舊

我使用的技術是簡單的CSS。 我使用JS只是生成一些段落來演示橢圓。 這就是我處理受限的HTML / JS使用時的方式。 ：P

順便說一句，我用那個小星號換了一個男子氣概的V8 1000馬力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>