CSS text-overflow: ellipsis; not working?

问题

I don't know why this simple CSS isn't working...

.app a {
  height: 18px;
  width: 140px;
  padding: 0;
  overflow: hidden;
  position: relative;
  margin: 0 5px 0 5px;
  text-align: center;
  text-decoration: none;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: #000;
}

<div class="app">
  <a href="">Test Test Test Test Test Test</a>
</div>

Should cut off around the 4th "Test"

回答1:

text-overflow:ellipsis; only works when the following are true:

• The element's width must be constrained in px (pixels). Width in % (percentage) won't work.
• The element must have overflow:hidden and white-space:nowrap set.

The reason you're having problems here is because the width of your a element isn't constrained. You do have a width setting, but because the element is set to display:inline (i.e. the default) it is ignoring it, and nothing else is constraining its width either.

You can fix this by doing one of the following:

• Set the element to display:inline-block or display:block (probably the former, but depends on your layout needs).
• Set one of its container elements to display:block and give that element a fixed width or max-width.
• Set the element to float:left or float:right (probably the former, but again, either should have the same effect as far as the ellipsis is concerned).

I'd suggest display:inline-block, since this will have the minimum colateral impact on your layout; it works very much like the display:inline that it's using currently as far as the layout is concerned, but feel free to experiment with the other points as well; I've tried to give as much info as possible to help you understand how these things interract together; a large part of understanding CSS is about understanding how various styles work together.

Hope that helps.

Here's a snippet with your code, with a display:inline-block added, to show how close you were.

.app a {
  height: 18px;
  width: 140px;
  padding: 0;
  overflow: hidden;
  position: relative;
  display: inline-block;
  margin: 0 5px 0 5px;
  text-align: center;
  text-decoration: none;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: #000;
}

<div class="app">
  <a href="">Test Test Test Test Test Test</a>
</div>

Useful references:

• https://developer.mozilla.org/en-US/docs/Web/CSS/text-overflow
• https://developer.mozilla.org/en-US/docs/Web/CSS/white-space

回答2:

The accepted answer is awesome. However, you can still use % width and attain text-overflow: ellipsis. The solution is simple:

display: inline-block; /* for em, a, span, etc (inline by default) */
text-overflow: ellipsis;
width: calc (80%); /* The trick is here! */

It seems whenever you use calc, the final value is rendered in absolute pixels, which consequentially converts 80% to something like 800px for a 1000px-width container. Therefore, instead of using width: [YOUR PERCENT]%, use width: calc([YOUR PERCENT]%).

回答3:

Also make sure word-wrap is set to normal for IE10 and below.

The standards referenced below define this property's behavior as being dependent on the setting of the "text-wrap" property. However, wordWrap settings are always effective in Windows Internet Explorer because Internet Explorer does not support the "text-wrap" property.

Hence in my case, word-wrap was set to break-word (inherited or by default?) causing text-overflow to work in FF and Chrome, but not in IE.

ms info on word-wrap property

回答4:

anchor,span... tags are inline elements by default, In case of inline elements width property doesn't works. So you have to convert your element to either inline-block or block level elements

回答5:

Include the four lines written after the info for ellipsis to work

.app a
{
 color: #fff;
 font: bold 15px/18px Arial;
 height: 18px;
 margin: 0 5px 0 5px;
 padding: 0;
 position: relative;
 text-align: center;
 text-decoration: none;
 width: 140px;

 /* 
 Note: The Below 4 Lines are necessary for ellipsis to work.
 */

 display: block;/* Change it as per your requirement. */
 overflow: hidden;
 text-overflow: ellipsis;
 white-space: nowrap;
}

回答6:

So if you reach this question because you're having trouble trying to get the ellipsis working inside a display: flex container, try adding min-width: 0 to the outmost container that's overflowing its parent even though you already set a overflow: hidden to it and see how that works for you.

More details and a working example on this codepen by aj-foster. Totally did the trick in my case.

回答7:

Add display: block; or display: inline-block; to your #User_Apps_Content .DLD_App a

demo

回答8:

You just add one line css:

.app a {
   display: inline-block;
}

回答9:

You can also add float:left; inside this class #User_Apps_Content .DLD_App a

回答10:

In bootstrap 4, you can add a .text-truncate class to truncate the text with an ellipsis.

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"></script>

<!-- Inline level -->
<span class="d-inline-block text-truncate" style="max-width: 250px;">
  The quick brown fox jumps over the lazy dog.
</span>

回答11:

I had to make some long descriptions ellipse(take only one lane) while being responsive, so my solution was to let the text wrap(instead of white-space: nowrap) and instead of fixed width I added fixed height:

span {
  display: inline-block;
  line-height: 1rem;
  height: 1rem;
  overflow: hidden;
  // OPTIONAL LINES
  width: 75%;
  background: green;
  //  white-space: normal; default
}

<span>
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Commodi quia quod reprehenderit saepe sit. Animi deleniti distinctio dolorum iste molestias reiciendis saepe. Ea eius ex, ipsam iusto laudantium natus obcaecati quas rem repellat temporibus! A alias at, atque deserunt dignissimos dolor earum, eligendi eveniet exercitationem natus non, odit sint sit tempore voluptate. Commodi culpa ex facere id minima nihil nulla omnis praesentium quasi quia quibusdam recusandae repellat sequi ullam, voluptates. Aliquam commodi debitis delectus magnam nulla, omnis sequi sint unde voluptas voluptatum. Adipisci aliquam deserunt dolor enim facilis libero, maxime molestias, nemo neque non nostrum placeat reprehenderit, rerum ullam vel? A atque autem consectetur cum, doloremque doloribus fugiat hic id iste nemo nesciunt officia quaerat quibusdam quidem quisquam similique sit tempora vel. Accusamus aspernatur at au
</span>

回答12:

MUST contain

  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;

MUST NOT contain

display: inline

SHOULD contain

position: sticky

回答13:

Write these in your css rule.

overflow: hidden;
white-space: nowrap;
text-overflow: ellipsis;

来源：https://stackoverflow.com/questions/17779293/css-text-overflow-ellipsis-not-working