C5:HTML and XML

Finding an XML Tag

<[a-z:_][-a-z0-9._:]+((\s+[^>]+)*|/s*)/?>

Example:

 

Finding an HTML Attribute

(?:<[^>\s]+)(\s+[a-z]+(-[a-z]+)?(=(""[^<&""]*""|'[^<&']*'|[^<>\s]+))?)+

Example:

 

Removing an HTML Attribute

(<[^"">]+|<[^>""]+(""[^""]*""[^""]*)*)\sstyle=(""[^<&""]*""|'[^<&']*')?

Example:

 

Adding an HTML Attribute

(<h2)(?![^>]*\sclass=""[^<&""]*"")

$1 class="c1"

Example:

 

Removing Whitespace from HTML

(?:(?<=<)|(?<=</))([^/>]+)(?:\sstyle=['""][^'""]+?['""])([^/>]*)(?=/?>|\s)

$1$2

Example:

 

Removing Whitespace from CSS

(?<=[:;\w{])\s+(?=[}\w;:])

 

Example:

 

Finding Matching <script> Tags

<[a-z:_][-a-z0-9._:]+((\s+[^>]+)*|/s*)/?>

Example: