How to exclude style attribute from HTML string with regular expressions?
For example if we have following inline HTML string:
<html><body style="background-color:yellow"><h2 style="background-color:red">This is a heading</h2><p style="background-color:green">This is a paragraph.</p></body></html>
When apply the regular expression matching, matched result should look like:
<html><body ><h2 >This is a heading</h2><p >This is a paragraph.</p></body></html>
You simply need to replace the style tags with nothing, here's an example how to do so with PHP:
$text = preg_replace('/\s+style="[^"]*"/', '', $text);
It is mostly answered that regex's in most cases are not suitable for HTML, so you should provide the language in which you plan to implement this.
However a regex like this will replace the heading:
<h2\s+style="background-color:red">
// replace with
<h2>
The regex for the paragraph tag is analogous (replace 'h2' with 'p' and 'red' with 'green').
You can't parse HTML with regular expressions because HTML is not regular.
Of course you can cut corners at your own peril, for example by searching for style\s*=\s*"[^"]*" and replacing that with nothing, but that will remove any occurence of style="anything" from your text.