自动换行不考虑长不间断文本的父级宽度

Question

.container {
  /* 
     Container's width can be dynamically resized. 
     I put width = 300px in the example to demonstrate a case 
     where container's width couldn't hold second msg 
  */
  width: 300px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 1em;
  background-color: blue;
}

.parent{
  display:flex;
  flex-direction:row;
  flex-wrap:nowrap;
  padding:1em;
  background-color:red;
  box-sizing:border-box;
  margin-bottom: 1em;
}
.name{
  background-color:mistyrose;
  width: 70px;
  padding: 1em;
}
.msg{
  background-color:powderblue;
  max-width: 30vw;
  padding:.5em;
  word-wrap:break-word;
}

<div class='container'>
 <div class="parent">
    <div class="name">
      David
    </div>
    <div class="msg">
    How are you? How are you? How are you? How are you? How are you? How are you? How are you? How are you? How are you? How are you? How are you? How are you? How are you? 

    </div>
  </div>
  <div class="parent">
    <div class="name">
      Hannah
    </div>
    <div class="msg">
    somethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomething

    </div>
  </div>
</div>

理想情况下，我希望每个 msg 的最大宽度为 30vw，但同时尊重父级的宽度。 first 行的行为正确，但 second 行的行为不正确。如果将父级的宽度调整为小于 30vw 的某个值，second 消息将溢出。

我想要 max-width = min(30vw, parent's width)

注意：容器的宽度可以动态调整。我在示例中放置了 width = 300px 来演示容器无法容纳第二个 msg 的情况，它以某种方式具有 width = max-width = 30vw.

您还可以在 http://jsfiddle.net/vbj10x4k/231/

查看示例

Answer 1

只需添加：

word-break: break-all;

在 .msg

Answer 2

只需将 max-width:100% 设置为 .parent，这样这个元素就会尊重 .container 的宽度，然后依靠 flex，您的元素将默认收缩。也不要忘记元素本身 min-width:0 .

.container {
  width: 300px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 1em;
  background-color: blue;
}

.parent{
  display:flex;
  flex-direction:row;
  flex-wrap:nowrap;
  padding:1em;
  background-color:red;
  box-sizing:border-box;
  margin-bottom: 1em;
  max-width:100%; /*Added this */
}
.name{
  background-color:mistyrose;
  width: 70px;
  padding: 1em;
}
.msg{
  background-color:powderblue;
  max-width:30vw;
  min-width:0; /*addedd this*/
  padding:.5em;
  word-wrap:break-word;
}

<div class='container'>
 <div class="parent">
    <div class="name">
      David
    </div>
    <div class="msg">
    How are you? How are you? How are you? How are you? How are you? How are you? How are you? How are you? How are you? How are you? How are you? How are you? How are you? 

    </div>
  </div>
  <div class="parent">
    <div class="name">
      Hannah
    </div>
    <div class="msg">
    somethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomethingsomething

    </div>
  </div>
</div>

Answer 3

如果您不需要支持 IE11 或 safari，一个简单的解决方案是将 word-wrap:break-word; 切换为 word-wrap: anywhere (working example)

如果您需要支持 Safari（但仍不支持 IE11），请将 word-wrap:break-word; 替换为 word-break: break-word。请注意，word-break: break-word 是 deprecated，有利于 word-wrap: anywhere。

我还建议将 word-wrap 切换为更常用的别名：overflow-wrap。在搜索词中使用它会更有效。

另见：Difference between overflow-wrap and word-break?

自动换行不考虑长不间断文本的父级宽度

Word-wrap doesn't respect parent's width for long non-break text

html

css

overflow

word-wrap

word-break