MATCH THIRD ELEMENT REGEX

Question

How do I marry only the third </p> of that text?

texto="<p>primeiro paragrafo.</p><h2>titulo 1</h2><p>segundo  paragrafo.</p><h2>titulo 2</h2><p>terceiro paragrafo.</p> <p>primeiro paragrafo.</p><h2>titulo 1</h2><p>segundo  paragrafo.</p><h2>titulo 2</h2><p>terceiro paragrafo.</p> <p>primeiro paragrafo.</p><h2>titulo 1</h2><p>segundo  paragrafo.</p><h2>titulo 2</h2>"

Regex: https://regex101.com/r/O1NTvP/1

Answer 1

You can do it by breaking the string texto in array by tags </p> and then reassembling the texto with For Each adding the tags again </p> and when you arrive at the third loop lap, add what you want after the third tag </p>. Just use a variable that starts from 0 and every turn of the For Each increase +1. When the value of that variable is 2 (means the loop is on the 3rd lap), add into a variable that has the tag </p> the content you want to insert after it, in case the Adsense code.

Would look like this:

<%
texto="<p>primeiro paragrafo.</p><h2>titulo 1</h2><p>segundo paragrafo.</p><h2>titulo 2</h2><p>terceiro paragrafo.</p> <p>primeiro paragrafo.</p><h2>titulo 1</h2><p>segundo  paragrafo.</p><h2>titulo 2</h2><p>terceiro paragrafo.</p> <p>primeiro paragrafo.</p><h2>titulo 1</h2><p>segundo  paragrafo.</p><h2>titulo 2</h2>"
texto2 = split(texto, "</p>") ' quebra em array
texto = "" ' esvazia a variável

indice = 0 ' cria a variável
For Each item In texto2
   if indice = 2 then
      fecha_p = "</p><script async src=""//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js""></script>"&_
      "<ins class=""adsbygoogle"""&_
      " style=""display:inline-block;width:300px;height:250px"""&_
      " data-ad-client=""ca-pub-3438726300391994"""&_
      " data-ad-slot=""5174009669""></ins>"&_
      "<script>"&_
      "(adsbygoogle = window.adsbygoogle || []).push({});"&_
      "</script>"
   else
      fecha_p = "</p>"
   end if

   texto = texto & item & fecha_p ' concatena as strings
   indice = indice + 1 ' incrementa a variável
Next
%>

The result of the variable texto will look like this:

<p>primeiro paragrafo.</p><h2>titulo 1</h2><p>segundo paragrafo.</p><h2>titulo 2</h2><p>terceiro paragrafo.</p><script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script><ins class="adsbygoogle" style="display:inline-block;width:300px;height:250px" data-ad-client="ca-pub-3438726300391994" data-ad-slot="5174009669"></ins><script>(adsbygoogle = window.adsbygoogle || []).push({});</script> <p>primeiro paragrafo.</p><h2>titulo 1</h2><p>segundo  paragrafo.</p><h2>titulo 2</h2><p>terceiro paragrafo.</p> <p>primeiro paragrafo.</p><h2>titulo 1</h2><p>segundo  paragrafo.</p><h2>titulo 2</h2></p>

Note that the Adsense code was positioned after the third </p>. If you want after the 4th, for example, just change the 2 in if indice = 2 then for 3.

Also note that you need to duplicate the double quotes of the attributes of the Adsense script to escape the double quotes that delimit the variable string fecha_p.

In the code above I put an Adsense my, do not forget to exchange for the values of your Adsense.

Javascript-enabled:

Search for the third paragraph within a div (paragraphs need to be within a parent div) and add the Adsense code after it:

<%
texto="<p>primeiro paragrafo.</p><h2>titulo 1</h2><p>segundo paragrafo.</p><h2>titulo 2</h2><p>terceiro paragrafo.</p> <p>primeiro paragrafo.</p><h2>titulo 1</h2><p>segundo  paragrafo.</p><h2>titulo 2</h2><p>terceiro paragrafo.</p> <p>primeiro paragrafo.</p><h2>titulo 1</h2><p>segundo  paragrafo.</p><h2>titulo 2</h2>"
%>
<div id="texto">
   <%=texto%>
</div>
<script>
document.addEventListener("DOMContentLoaded", function(){

   var p = document.querySelectorAll("#texto > p")[2];

   var adsense = document.createRange().createContextualFragment('<scr'+'ipt async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"><\/script>'
                  +'<ins class="adsbygoogle"'
                       +' style="display:inline-block;width:300px;height:250px"'
                       +' data-ad-client="ca-pub-3438726300391994"'
                       +' data-ad-slot="5174009669"></ins>'
                  +'<scr'+'ipt>'
                  +'(adsbygoogle = window.adsbygoogle || []).push({});'
                  +'<\/script>');

   document.getElementById("texto").insertBefore(adsense, p.nextSibling);

});
</script>

See that you need to escape the backslash from closing the tag </script> of Adsense and concatenate the word script: <scr'+'ipt. Otherwise Javascript will understand that you are putting one script inside another.

Only that the methods document.createRange().createContextualFragment() may not work in older browsers.

With jQuery:

It’s a little simpler. The dial $("#texto p:eq(2)") selects the third paragraph within #texto and the .after() inserts the HTML after it:

$(function(){
   var adsense = '<scr'+'ipt async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"><\/script>'
                  +'<ins class="adsbygoogle"'
                       +' style="display:inline-block;width:300px;height:250px"'
                       +' data-ad-client="ca-pub-3438726300391994"'
                       +' data-ad-slot="5174009669"></ins>'
                  +'<scr'+'ipt>'
                  +'(adsbygoogle = window.adsbygoogle || []).push({});'
                  +'<\/script>';

  $("#texto p:eq(2)").after(adsense);
});