[正则表达式] 删除更变态的格式...

peterdocter

格式处理：
<h2>
<span>Rhymes with <em>BLAST</em>
</span>
</h2>

<a href="bast">bast</a>, <a href="cast">cast</a>, <a href="clast">clast</a>, <a href="fast">fast</a>, <a href="gast">gast</a>, <a href="ghast">ghast</a>, <a href="last">last</a>, <a href="mast">mast</a>, <a href="Nast">Nast</a>, <a href="past">past</a>, <a href="vast">vast</a>

<h2>
<span>Learn More About <em>BLAST</em>
</span>
</h2>


<a href="/thesaurus/blast" style="background: url(/images/lma_thes.jpg) no-repeat left 1px; padding-left: 20px; line-height: 16px; padding-bottom: 10px; text-decoration: none; color: black; font-weight: normal;">Thesaurus: </a>
<a href="/thesaurus/blast">All synonyms and antonyms for "blast"</a>

<a href="/spanish/blast" style="background: url(/images/lma_span.jpg) no-repeat left 1px; padding-left: 20px; line-height: 16px; padding-bottom: 10px; text-decoration: none; color: black; font-weight: normal;">Spanish-English Dictionary: </a>
<a href="/spanish/blast">Translation of "blast"</a>



<a href="/medical/blast" style="background: url(/images/lma_med.jpg) no-repeat left 1px; padding-left: 20px; line-height: 16px; padding-bottom: 10px; text-decoration: none; color: black; font-weight: normal;">Medical Dictionary: </a>
<a href="/medical/blast">Definition of "blast"</a>

<a href="http://www.britannica.com/EBchecked/topic/69016/blast" style="background: url(/images/lma_enc.jpg) no-repeat left 1px; padding-left: 20px; text-decoration: none; color: black; font-weight: normal;">Britannica.com: </a>


</>


<h2>
<span>Origin of <em>MANUBRIUM</em>
</span>
</h2>
New Latin, from Latin, handle, from <em xmlns:mwref="http://www.m-w.com/mwref">manus</em>
First Known Use: 1705



<h2>
<span>Learn More About <em>MANUBRIUM</em>
</span>
</h2>


<a href="/medical/manubrium" style="background: url(/images/lma_med.jpg) no-repeat left 1px; padding-left: 20px; line-height: 16px; padding-bottom: 10px; text-decoration: none; color: black; font-weight: normal;">Medical Dictionary: </a>
<a href="/medical/manubrium">Definition of "manubrium"</a>


<a href="http://www.britannica.com/EBchecked/topic/363096/manubrium" style="background: url(/images/lma_enc.jpg) no-repeat left 1px; padding-left: 20px; text-decoration: none; color: black; font-weight: normal;">Britannica.com: </a>
<a href="http://www.britannica.com/EBchecked/topic/363096/manubrium">Encyclopedia article about "manubrium"</a>


</>

<h2>
<span>Origin of <em>CARDIA</em>
</span>
</h2>
New Latin, from Greek <em xmlns:mwref="http://www.m-w.com/mwref">kardia</em> heart, upper orifice of the stomachFirst Known Use: 1782



<h2>
<span>Learn More About <em>CARDIA</em>
</span>
</h2>


<a href="/medical/cardia" style="background: url(/images/lma_med.jpg) no-repeat left 1px; padding-left: 20px; line-height: 16px; padding-bottom: 10px; text-decoration: none; color: black; font-weight: normal;">Medical Dictionary: </a>
<a href="/medical/cardia">Definition of "cardia"</a>


</>
-cardium


<h2>-cardium</h2> <span class="main-fl"> <em xmlns:mwref="http://www.m-w.com/mwref">noun combining form</em> </span>


<span xmlns:mwref="http://www.m-w.com/mwref" class="in"> <em>plural</em>  <strong>-cardia</strong>
</span>

注意：
开头是：
<h2>
<span>Learn More About <em>BLAST</em>
</span>
</h2>

结束是:
</>
但是要保留这个结束标签！

效果如下：
上面红色的就是要删除内容，注意是要删除不是提取...

<h2>
<span>Rhymes with <em>BLAST</em>
</span>
</h2>

<a href="bast">bast</a>, <a href="cast">cast</a>, <a href="clast">clast</a>, <a href="fast">fast</a>, <a href="gast">gast</a>, <a href="ghast">ghast</a>, <a href="last">last</a>, <a href="mast">mast</a>, <a href="Nast">Nast</a>, <a href="past">past</a>, <a href="vast">vast</a>

</>


<h2>
<span>Origin of <em>MANUBRIUM</em>
</span>
</h2>
New Latin, from Latin, handle, from <em xmlns:mwref="http://www.m-w.com/mwref">manus</em>
First Known Use: 1705

</>


<h2>
<span>Origin of <em>CARDIA</em>
</span>
</h2>
New Latin, from Greek <em xmlns:mwref="http://www.m-w.com/mwref">kardia</em> heart, upper orifice of the stomachFirst Known Use: 1782

</>
-cardium


<h2>-cardium</h2> <span class="main-fl"> <em xmlns:mwref="http://www.m-w.com/mwref">noun combining form</em> </span>


<span xmlns:mwref="http://www.m-w.com/mwref" class="in"> <em>plural</em>  <strong>-cardia</strong>
</span>

personball

太长了，不乐意看
如果删除的是大部分的内容，与其要删除，不如说要提取啥。。。
要删除的部分，用红色区别一下吧，上下对比，看起来累

peterdocter

回复 2# personball
又修改一下，这样看不累了吧？