问题描述
我以某种方式必须以编程方式为 c> 的 c>的宽度可以相应改变？
How can I define the someStyle so that the width of the :before of .something``div can change accordingly??
推荐答案
伪元素不能使用内联样式设置样式，如。你必须在样式表中使用 .something：before 选择器来定义 something 类名。这不是React的限制，而是HTML + CSS的设计选择。
Pseudo elements cannot be styled with inline styles as explained in https://stackoverflow.com/a/14141821/368697. You will have to style the something class name in a stylesheet with the .something:before selector. This is not a limitation of React but rather a design choice for HTML + CSS.
如果您需要以编程方式更改伪的宽度：之前元素，它可能更适合作为由React呈现的常规DOM元素。
If you need to programmatically change the width of the pseudo :before element, it is probably more appropriate as a regular DOM element rendered by React.
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