Regex select all text between tags

Question

What is the best way to select all the text between 2 tags - ex  the text between all the   pre  tags on the page

User · Answer

Try this         lt    lt any tag  gt    s    s       lt   any tag  gt

User · Answer

preg match all   lt pre gt     gt      lt   pre gt    content  matches  this regex will select everyting between  tag  no matter is it in new line work with multiline

User · Answer

You can use   lt pre gt       lt  pre gt     replacing pre with whatever text you want  and extract the first group  for more specific instructions specify a language  but this assumes the simplistic notion that you have very simple and valid HTML   As other commenters have suggested  if you re doing something complex  use a HTML parser

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lt pre gt    r n s      lt  w         gt      r n s    s   r n s    lt code s    class    w   w  s       gt       lt   code gt    s S     lt   code gt   r n s       lt  w         gt      s    r n s   lt   pre gt

User · Answer

You shouldn t be trying to parse html with regexes see this question and how it turned out   In the simplest terms  html is not a regular language so you can t fully parse is with regular expressions   Having said that you can parse subsets of html when there are no similar tags nested  So as long as anything between  and  is not that tag itself  this will work   preg match    lt    w      gt    gt       lt    1 gt      subject   matches    matches   array    0    gt  full matched string  1    gt  tag name  2    gt  tag content     A better idea is to use a parser  like the native DOMDocument  to load your html  then select your tag and get the inner html which might look something like this    obj   new DOMDocument     obj - gt  load  html    obj - gt  getElementByTagName  el     value    obj - gt  nodeValue      And since this is a proper parser it will be able to handle nesting tags etc

User · Answer

This is what I would use      lt    lt pre gt     w  d  n       -        amp                                       lt  pre gt      Basically what it does is       lt    lt pre gt    Selection have to be prepend with  lt pre gt  tag    w  d  n       -        amp                                This is just a regular expression I want to apply  In this case  it selects letter or digit or newline character or some special characters listed in the example in the square brackets  The pipe character   simply means  OR       Plus character states to select one or more of the above - order does not matter  Question mark changes the default behavior from  greedy  to  ungreedy         lt  pre gt    Selection have to be appended by the  lt  pre gt  tag    Depending on your use case you might need to add some modifiers like  i or m    i - case-insensitive m - multi-line search   Here I performed this search in Sublime Text so I did not have to use modifiers in my regex   Javascript does not support lookbehind  The above example should work fine with languages such as PHP  Perl  Java     Javascript  however  does not support lookbehind so we have to forget about using    lt    lt pre gt    and look for some kind of workaround  Perhaps simple strip the first four chars from our result for each selection like in here Regex match text between tags  Also look at the JAVASCRIPT REGEX DOCUMENTATION for non-capturing parentheses

User · Answer

You can use Pattern pattern   Pattern compile      lt  tagname   gt

User · Answer

For multiple lines    lt htmltag gt        s         lt  htmltag gt

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This answer supposes support for look around  This allowed me to identify all the text between pairs of opening and closing tags  That is all the text between the   gt   and the   lt    It works because look around doesn t consume the characters it matches     lt   gt     w s       lt      I tested it in https   regex101 com  using this HTML fragment   x000D   x000D   lt table gt   lt tr gt  lt td gt Cell 1 lt  td gt  lt td gt Cell 2 lt  td gt  lt td gt Cell 3 lt  td gt  lt  tr gt   lt tr gt  lt td gt Cell 4 lt  td gt  lt td gt Cell 5 lt  td gt  lt td gt Cell 6 lt  td gt  lt  tr gt   lt  table gt  x000D   x000D   x000D   It s a game of three parts  the look behind  the content  and the look ahead     lt   gt        look behind  but don t consume capture  for a   gt      w s      capture consume any combination of alpha numeric whitespace     lt         look ahead   but don t consume capture  for a   lt      I hope that serves as a started for 10  Luck

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This seems to be the simplest regular expression of all that I found       lt TAG gt     s S       lt   TAG gt      Exclude opening tag     lt TAG gt   from the matches Include any whitespace or non-whitespace characters    s S    in the matches Exclude closing tag     lt   TAG gt   from the matches

User · Answer

use the below pattern to get content between element  Replace  tag  with the actual element you wish to extract the content from    lt  tag  gt       lt   tag  gt    Sometime tags will have attributes  like anchor tag having href  then use the below pattern     lt  tag    gt    gt       lt   tag  gt

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In Python  setting the DOTALL flag will capture everything  including newlines      If the DOTALL flag has been specified  this matches any character including a newline  docs python org    example py using Python 3 7 4   import re  str    Everything is awesome   lt pre gt Hello  World       lt  pre gt         Normally      will not capture newlines  but here re DOTATLL is set  pattern   re compile r  lt pre gt      lt  pre gt   re DOTALL  matches   pattern search str   print matches group 1     python example py  Hello  World    Capturing text between all opening and closing tags in a document  To capture text between all opening and closing tags in a document  finditer is useful  In the example below  three opening and closing  lt pre gt  tags are present in the string    example2 py using Python 3 7 4 import re    str contains three  lt pre gt     lt  pre gt  tags str      In two different ex- periments  the authors had subjects chat and solve the  lt pre gt Desert Survival Problem lt  pre gt  with a humorous or non-humorous computer  In both experiments the computer made pre- programmed comments  but in study 1 subjects were led to believe they were interact- ing with another person  In the  lt pre gt humor conditions lt  pre gt  subjects received a number of funny comments  for instance     The mirror is probably too small to be used as a signaling device to alert rescue teams to your location  Rank it lower   On the other hand  it offers  lt pre gt endless opportunity for self-reflection lt  pre gt             Normally      will not capture newlines  but here re DOTATLL is set   The question mark in       indicates non greedy matching  pattern   re compile r  lt pre gt       lt  pre gt   re DOTALL   matches   pattern finditer str    for i match in enumerate matches       print f tag  i     match group 1     python example2 py  tag 0   Desert Survival Problem tag 1   humor conditions tag 2   endless opportunity for self-reflection

User · Answer

To exclude the delimiting tags      lt   lt pre gt           lt  pre gt        lt   lt pre gt   looks for text after  lt pre gt       lt  pre gt   looks for text before  lt  pre gt   Results will text inside pre tag

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x000D   x000D  var str    Lorem ipsum  lt pre gt text 1 lt  pre gt  Lorem ipsum  lt pre gt text 2 lt  pre gt    x000D      str replace   lt pre gt       lt   pre gt  g  function match  g1    console log g1       x000D   x000D   x000D    Since accepted answer is without javascript code  so adding that

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Tag can be completed in another line  This is why  n needs to be added    lt PRE gt     n    lt   PRE gt

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In Javascript  among others   this is simple   It covers attributes and multiple lines     lt pre   gt    gt    s S     lt   pre gt

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I use this solution   preg match all     lt      lt      n      gt  si     content   new   var dump  new

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