CSS反增量和反重置
[英]CSS Counter-increment and counter-reset
问题描述
Please can someone explain to me why I am getting '1' even though reset is not applied to the subsection counter.I mean should I not get 1.1, 1.2 ,1.3 instead of 1.1, 1.1,1.1 for all h2 tag under the same h1 tag?I am a beginner in learning CSS and it would help me a lot if any one could explain.Thanks in advance. 
请问有人可以向我解释为什么即使没有将复位应用于小节计数器，我也得到'1'的意思。我的意思是我在同一个h1下不应该为所有h2标签获得1.1、1.2、1.3而不是1.1、1.1、1.1我是学习CSS的初学者，如果有人可以解释的话将对我有很大帮助。 The code is: 代码是：
<!DOCTYPE html>
<html>
<head>
<style>
body {
counter-reset: section;
}
h1 {
counter-reset: section;
}
h1:before {
counter-increment: section;
content: "Section " counter(section) ". ";
}
h2:before {
counter-increment: subsection;
content: counter(section) "." counter(subsection) " ";
}
</style>
</head>
<body>
<p><b>Note:</b> IE8 supports these properties only if a !DOCTYPE is specified.</p>
<h1>HTML tutorials</h1>
<h2>HTML Tutorial</h2>
<h2>XHTML Tutorial</h2>
<h2>CSS Tutorial</h2>
<h1>Scripting tutorials</h1>
<h2>JavaScript</h2>
<h2>VBScript</h2>
<h1>XML tutorials</h1>
<h2>XML</h2>
<h2>XSL</h2>
</body>
</html>
Output: 输出：
2 个解决方案
解决方案1
0 2016-04-10 18:04:26
Please try this: 请尝试以下方法：
Instead of 代替
h1 {
counter-reset: section;
}
It will be 这将是
h1 {
counter-reset: subsection;
}
解决方案2
0 2016-04-10 18:14:34
See this very good article on counter-reset property. 看到这篇关于counter-reset属性的很好的文章。
https://css-tricks.com/almanac/properties/c/counter-reset/ https://css-tricks.com/almanac/properties/c/counter-reset/
As it said, h1 element is used to reset h2 counter-increment when a new h1 occurs in the code. 就像说的那样，当代码中出现新的h1时， h1元素用于重置h2 counter-increment 。
Example : 范例：
<h1>HTML tutorials</h1> // count 1
<h2>HTML Tutorial</h2> // count 1.1 because you have one h1 above
<h2>XHTML Tutorial</h2> // count 1.2
<h2>CSS Tutorial</h2> // count 1.3
<h1>Scripting tutorials</h1> // count 2 because of the new h1 tag
<h2>JavaScript</h2> // count 2.1 because of the reset after the new h1 appears
<h2>VBScript</h2> // count 2.2
So you have to use this code to make the reset works properly on h2:before counter : 因此，您必须使用此代码来使重置在h2:before正常工作：
h1 {
counter-reset: subsection // which is the name of h2 counter-increment;
}
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