Clear HTML tags but keep some of the labels

Most of the time we are clearing HTML tags but always want to keep some of the tags

Implement in ASP language

Str= "<a href=" "a.htm" ">a.htm</a><div>afefe</div>feaa<b>bbb</b><a href= Http://www.baidu.com id= "" GGG ">ggg</a><abbr> test </abbr>" Set re=new RegExp    re. IgnoreCase =true    Re. Global=true    Re. Pattern= "(< (?! /? (a|p|b) (\s|>)) [^>]*>) "    str=re.replace (str," ")    

The regular can also be implemented in other languages.

The following are implemented in the PHP language:

$str = ' <a href= ' a.htm ' >a.htm</a><div>afefe</div>feaa<b>bbb</b><a href=http ://www.baidu.com id= "GGG" >ggg</a><abbr> test </abbr> ' echo preg_replace ('/(< (?! \/? (a|p|b) (\s|\>)) [^>]*>)/', ', $str);?>

Of course, PHP has a simpler way of implementing it:

$str = ' <a href= ' a.htm ' >a.htm</a><div>afefe</div>feaa<b>bbb</b><a href=http ://www.baidu.com id= "GGG" >ggg</a><abbr> test </abbr> "Echo strip_tags ($str, ' <b><a> <p> ');

Clear HTML tags but keep some of the labels