用于HTML属性替换/添加的正则表达式 [英] Regex for HTML attribute replacement/addition

问题描述

给定一个带有name属性的HTML标记，我想用我的代码替换它自己的属性。如果该标签缺少名称属性，我想植入我自己的属性。结果应该如下所示：

 < IMG name =img1...> => < IMG name =myImg1...> 
< IMG ...> => < IMG name =myImg1...> 
  

这可以使用单线正则表达式吗？

。然后插入您自己的名称属性以及所有捕获的属性。

  s /< IMG 
（ （？：\s +（？！name\b）\w + =[^] +）*）
（？：\s + name =[^] +）？ 
（（？：\ s +（?! name\b）\w + =[^] +）*）
> 
 /< IMG name = myName$ 1 $ 2> 
 / xg; 
  

I'm looking for a single line regex which does the following:

Given a HTML tag with the "name" attribute, I want to replace it with my own attribute. If that tag lacks the name attribute, I want to implant my own attribute. The result should look like this:

<IMG name="img1" ...> => <IMG name="myImg1" ...>
<IMG ...> => <IMG name="myImg1" ...>

Can this be done with a single line regex?

解决方案

The trick is to match every complete "attribute=value" pair, but capture only the ones whose attribute name isn't "name". Then plug in your own "name" attribute along with all the captured ones.

s/<IMG
  ((?:\s+(?!name\b)\w+="[^"]+")*)
  (?:\s+name="[^"]+")?
  ((?:\s+(?!name\b)\w+="[^"]+")*)
  >
 /<IMG name="myName"$1$2>
 /xg;

这篇关于用于HTML属性替换/添加的正则表达式的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！