Regular Expressions 101

block the literal text block (case sensitive)

Group 1(\w+)

\w+any word character, repeated at least once

\n+a line-feed (newline) character (ASCII 10), repeated at least once

Group 2([\s\S]*?)

Character Class[\s\S]*?

*?matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

Positive Lookahead(?=\s+block|$)

1st Alternative\s+block

\s+any whitespace character, repeated at least once

blockthe literal text block (case sensitive)

2nd Alternative$

$end of string

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

block (\w+)\n+([\s\S]*?)(?=\s+block|$)

New

extends standard

block head

  <title>title</title>
  <meta name="description" content="A wonderful thing.">

block body

  <h1>Title</h1>
  <p>A wonderful paragraph...</p>

block scripts

  <script src="/javascritps/html5shiv.js"></script>