我想限制文本块的宽度，这样它看起来就像在每行的 ned 处都有 br 。
像这样的事情：
Texttttttttttttttttttttt
tttttttttttttttttttttttt
tttttttttttttttttttttttt
由此：
文字ttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt
我尝试指定 div 或 p 的宽度，但它对我不起作用。有什么建议么？
你可以像这样应用CSS：
div {
word-wrap: break-word;
width: 100px;
}
通常浏览器不会断词，但是word-wrap: break-word;也会迫使它断言。
Demo: http://jsfiddle.net/Mp7tc/ http://jsfiddle.net/Mp7tc/
更多信息关于自动换行 https://developer.mozilla.org/en-US/docs/CSS/word-wrap
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