CSS中带有或不带有'px'后缀的零像素大小？ [英] Size of zero pixels in CSS with or without 'px' suffix?

问题描述

在CSS中，我已经看到零像素声明为简单的0 '也为'0px'。

  mystyle {width：0; } 
 
 anotherstyle {width：0px; } 
  

'0'的小问题是，如果将其更改为非零值，你可能会忘记添加'px'。当值为'0'时，你可能会忘记删除'px'。我想在我的代码中的纯一致性和这样的小东西驱动我坚果。

这真的来自个人偏好，如何缩进？

他们似乎都工作，但是哪种更好，为什么？

谢谢。

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清除编辑：

没有px的0是不我所指的是。

它让我坚持，有两种不同的方式做同样的事情。 $ b

就个人而言，尽管在适当的情况下忘记添加/删除px的小问题，我将继续使用'0'，知道它与其他方式一样可接受。

$ b $

使用 width：0



特别是当你有，例如：

<$> p $ p> padding：0px 0px 9px 8px


vs

  padding：0 0 9px 8px 
  

查看规格：

长度值的格式（表示为
，由< length>在本说明书中）是
a< number> （具有或不具有十进制
点），紧接着是单元
标识符（例如，px，em等）。
长度为零后，单位标识符是可选的。

---

'0'的小问题是，如果
将其更改为非零值
，则可能会忘记添加'px' 。和
当值为'0'时，你可以
忘记删除'px'

在没有单元标识符的情况下写入 0 的习惯不会发生。

Googling for the answer to this question has proven difficult so I figured somebody here should know.

Within CSS, I've seen zero pixels declared as simply '0' yet also as '0px'.

mystyle { width: 0; }

anotherstyle { width: 0px; }

The minor problem with '0' is that if you change it to some non-zero value, you might forget to add the 'px'. And when making a value '0', you may forget to remove the 'px'. I want pure consistency in my code and little things like this drive me nuts.

Does this really come down to a personal preference like where to indent?

They both seem to work but which way is better and why?

Thank-you.

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EDIT for clarity:

I wrote "little things like this drive me nuts".

Not having a "px" for 0 is not what I was referring to.

It drives me nuts that there are two different ways of doing the same simple thing.

Personally, despite the minor issue of forgetting to add/remove 'px' where appropriate, I'll continue using '0' by itself knowing it's just as acceptable as the other way.

解决方案

They are identical.

Use width: 0, because it is shorter and more readable.

Especially when you have, for example:

padding: 0px 0px 9px 8px

vs

padding: 0 0 9px 8px

See the specs:

The format of a length value (denoted by <length> in this specification) is a <number> (with or without a decimal point) immediately followed by a unit identifier (e.g., px, em, etc.). After a zero length, the unit identifier is optional.

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The minor problem with '0' is that if you change it to some non-zero value, you might forget to add the 'px'. And when making a value '0', you may forget to remove the 'px'

This does not happen once you get into the habit of writing 0 without the unit identifier.

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