完整測試代碼
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<script>var str='<p>';str='<table id="tblSort" cellspacing="0" helvetica="" sans=""><tr id="sdf"><td style="color:red" class="ok" colspan="8" height="500" rowspan="5">';str+='<td style = "color:blue" style="color:blue" colspan="8" style="color:red" rowspan="5">';str+='<td id="asdfj" class="dbclick"><span id="s159015" class="p_check"><a style="text-decoration: none; color: rgb(0,136,255)" href="http://www.17ce.com/site/dns/20200408_3875c5d0799211eab8bc2bbb7b33a12c:1.html#s159015" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >GET</a> <a style="text-decoration: none; color: rgb(0,136,255)" href="http://www.17ce.com/site/dns/20200408_3875c5d0799211eab8bc2bbb7b33a12c:1.html#s159015" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >PING</a> <a style="text-decoration: none; color: rgb(0,136,255)" href="http://www.17ce.com/site/dns/20200408_3875c5d0799211eab8bc2bbb7b33a12c:1.html#s159015" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Trace</a> <a style="text-decoration: none; color: rgb(0,136,255)" href="http://www.17ce.com/site/dns/20200408_3875c5d0799211eab8bc2bbb7b33a12c:1.html#s159015" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Dig</a></span></td>';str+='<td class="sdf" colspan="8" style="color:red" rowspan="5"><p style="color:red">jb51.net</p></td>';str+='<td class="sdf" colspan="8" style="color:red" rowspan="5" width="100"></td></tr></table>';str+='<table><tr style = "color:bluefffffffffffffffffffffffffffffffffffffffffff"><td style="color:green" class="ok" colspan="8" height="500" rowspan="5">';str+='<tr id="trinfo146798" class="alt"> <td id="tdinfo146798" colspan="16"></td> </tr>';str+='<td id="asdfj" class="dbclick"><span id="s159015" class="p_check"><a style="text-decoration: none; color: rgb(0,136,255)" href="http://www.17ce.com/site/dns/20200408_3875c5d0799211eab8bc2bbb7b33a12c:1.html#s159015" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >GET</a> <a style="text-decoration: none; color: rgb(0,136,255)" href="http://www.17ce.com/site/dns/20200408_3875c5d0799211eab8bc2bbb7b33a12c:1.html#s159015" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >PING</a> <a style="text-decoration: none; color: rgb(0,136,255)" href="http://www.17ce.com/site/dns/20200408_3875c5d0799211eab8bc2bbb7b33a12c:1.html#s159015" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Trace</a> <a style="text-decoration: none; color: rgb(0,136,255)" href="http://www.17ce.com/site/dns/20200408_3875c5d0799211eab8bc2bbb7b33a12c:1.html#s159015" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Dig</a></span></td>';str+='<td class="sdf" colspan="8" style="color:red" rowspan="5"><p style="color:red">jb51.net</p></td>';str+='<td class="sdf" colspan="8" style="color:red" rowspan="5" width="100"> <font color="#0f0000">122.227.189.106 [中國浙江寧波電信]</font><br /></td></tr></table>';str+='<p><img alt="" src="//img.jbzj.com/file_images/article/202004/2020041112113912.png" /></p>';str+='<p>選擇安裝然后選擇全新的sql server獨立安裝</p>';str+='<p><img alt="" src="//img.jbzj.com/file_images/article/202004/2020041112113913.png" /></p>';console.log(str);//去除table的寬度str=str.replace(/<table[^>]*>/ig, "<table>");str=str.replace(/<table[^>]*>[\s\S]*?<\/table>/gi,function(match,capture){match=match.replace(/(style|class|id)[\s]*=[\s]*("|')[^<>"']*?\2/gi,'');match=match.replace(/<\/?span[^<>]*>/gi,'');match=match.replace(/<p [^<>]*>|<\/p>/gi,'');match=match.replace(/<font[^<>]*>|<\/font>/gi,'');return match;});//alert(str);console.log(str);</script> |
原來的代碼是這樣的
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//普通替換function doRepNormal(s){var str=s.replace(/<p><br type="_moz">\s*?<\/p>/ig,"");str=str.replace(/<p>\s*?<br type="_moz">\s*?<\/p>/ig, "");str=str.replace(/<p>(\s|\ \;| | |\xc2\xa0)*?<\/p>/ig, "");str=str.replace(/<p>\s*?<\/p>/ig,"");str=str.replace(/<p> <\/p>/ig,"");str=str.replace(/<br type="_moz">\n <\/p>/ig, "</p>");str=str.replace(/<br type="_moz">\s*?<\/p>/ig, "</p>");str=str.replace(/<br\s*?\/?>\s*?<\/p>/ig, "</p>");str=str.replace(/<br \/>\n <\/p>/ig, "</p>");str=str.replace(/<br>\n <\/p>/ig, "</p>");//表格替換 str=str.replace(/<table[^>]*>/ig, "<table>");str=str.replace(/<table[^>]*>[\s\S]*?<\/table>/gi,function(match,capture){match=match.replace(/style[\s]*=[\s]*("|')[^<>"']*?\1/gi,'');match=match.replace(/cl\ass[\s]*=[\s]*("|')[^<>"']*?\1/gi,'');match=match.replace(/id[\s]*=[\s]*("|')[^<>"']*?\1/gi,'');match=match.replace(/<font[^<>]*>|<\/font>/gi,'');return match;});str=str.replace(/<td[^>]*>/gi,function(match,capture){match=match.replace(/style[\s]*=[\s]*("|')[^<>"']*?\1/gi,'');match=match.replace(/cl\ass[\s]*=[\s]*("|')[^<>"']*?\1/gi,'');match=match.replace(/id[\s]*=[\s]*("|')[^<>"']*?\1/gi,'');return match;});return str;} |
后臺修改成這樣的
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str=str.replace(/<table[^>]*>/ig, "<table>");str=str.replace(/<table[^>]*>[\s\S]*?<\/table>/gi,function(match,capture){match=match.replace(/(style|class|id)[\s]*=[\s]*("|')[^<>"']*?\2/gi,'');match=match.replace(/<\/?span[^<>]*>/gi,'');match=match.replace(/<p [^<>]*>|<\/p>/gi,'');match=match.replace(/<font[^<>]*>|<\/font>/gi,'');return match;}); |
經(jīng)過測試發(fā)現(xiàn)chrome中正常，但在ie8與ie7中有bug無法實現(xiàn)class與id的替換，文檔聲明<!DOCTYPE html>都會影響一些結(jié)果，真是漲了見識
正好看到別的人分享的先留存一份，后續(xù)更新
用正則表達式取出table中的所有行（支持嵌套table）
此是通過csdn詢問得高人之手寫的。
謝謝gzdiablo
表達式:
<tr[^>]*>(?:(?:\s|\S)*?(?=<table|</tr>)(?(<table)<table[^>]*>(?:\s|\S)*?(?:</table>|(?:(?:<table[^>]*>(?:\s|\S)*?</table>(?:\s|\S)*?)*?</table>))(?:\s|\S)*?|))*</tr>
一條表達式就可以獲取你想要的
寫得好辛苦
測試:
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<table width="300" border="1" cellspacing="0" cellpadding="0"> <tr> <td> </td> <td><table width="100%" border="1" cellspacing="0" cellpadding="0"> <tr> <td> </td> </tr> </table> <table width="100%" border="1" cellspacing="0" cellpadding="0"> <tr> <td> </td> </tr> </table></td> <td> </td> </tr> <tr> <td> </td> <td> </td> <td><table width="100%" border="1" cellspacing="0" cellpadding="0"> <tr> <td> </td> </tr> </table></td> </tr> <tr> <td><table width="100%" border="1" cellspacing="0" cellpadding="0"> <tr> <td> </td> </tr> </table></td> <td> </td> <td> </td> </tr></table> |
-------------------獲取3個match
============================================match1
<tr>
<td> </td>
<td><table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
</tr></table>
<table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
</tr>
</table></td>
<td> </td>
</tr>
==============================================match2
<tr>
<td> </td>
<td> </td>
<td><table width="100%" border="1" cellspacing="0" cellpadding="0"><tr>
<td> </td>
</tr>
</table></td>
</tr>
==============================================match3
<tr>
<td><table width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
</tr></table></td>
<td> </td>
<td> </td>
</tr>
正則表達式匹配html標簽table
首先，要匹配任意內(nèi)容“.”是不行的，因為不匹配“\n”，取不到想要的內(nèi)容，所以有了如下表達式：
[\s\S]*
當然，你也可以用 “[\d\D]*”、“[\w\W]*” 來表示。
現(xiàn)在我們來匹配一個html標簽，匹配table如下：
<table.*?>[\s\S]*<\/table>
或
<table.*?>[\s\S]*?<\/table>
以上兩個表達式，一個加了"?"和一個卻不加“?”，那么這有什么區(qū)別呢？
我們知道“?”在正則表達式里是一個通配符：匹配前面的子表達式零次或一次，或指明一個非貪婪限定符。
在這里，通過測試，我們得出這樣的結(jié)論：在不加“?”的情況下，在匹配下面一段內(nèi)容的時候：
<table>這是第一個table</table>
我不是table里的內(nèi)容
<table>這是第二個table</table>
我也不是table里的內(nèi)容
<table>這是第三個table</table>
會把以<table>開始，</table>結(jié)束的內(nèi)容都匹配出來
加了“?”之后，只匹配第n個匹配的內(nèi)容
完整測試代碼服務器之家小編提供
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<script>var str='<table>這是第一個table</table>';str+='我不是table里的內(nèi)容';str+='<table>這是第二個table</table>';str+='我也不是table里的內(nèi)容';str+='<table>這是第三個table</table>';var reg1 = /<table.*?>[\s\S]*<\/table>/gi;var res1 = str.match(reg1);console.log(res1) var reg2 = /<table.*?>[\s\S]*?<\/table>/gi;var res2 = str.match(reg2);console.log(res2) </script> |
效果圖
以上就是正則表達式替換table表格中的樣式與空標記(保留rowspan與colspan)的詳細內(nèi)容，更多關(guān)于正則表達式替換table表格的資料請關(guān)注服務器之家其它相關(guān)文章！
