正则表达式替换table表格中的样式与空标记(保留rowspan与colspan)

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完整测试代码

<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">.net.cn</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">.net.cn</p></td>';str+='<td class="sdf" colspan="8" style="color:red" rowspan="5" width="100"> <font color="#0f0000">122.227.189.106 [中国浙江宁波电信]</font><br /></td></tr></table>';str+='<p><img alt="" src="https://img.jbzj.com/file_images/article/202004/2020041112113912.png" /></p>';str+='<p>选择安装然后选择全新的sql server独立安装</p>';str+='<p><img alt="" src="https://img.jbzj.com/file_images/article/202004/2020041112113913.png" /></p>';console.log(str);//去除table的宽度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>

原来的代码是这样的

//普通替换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|\&nbsp\;| |　|\xc2\xa0)*?<\/p>/ig, "");str=str.replace(/<p>\s*?<\/p>/ig,"");str=str.replace(/<p>&nbsp;<\/p>/ig,"");str=str.replace(/<br type="_moz">\n&nbsp;<\/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&nbsp;<\/p>/ig, "</p>");str=str.replace(/<br>\n&nbsp;<\/p>/ig, "</p>");//表格替换 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;}

后台修改成这样的

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;});

经过测试发现chrome中正常，但在ie8与ie7中有bug无法实现class与id的替换，文档声明<!DOCTYPE html>都会影响一些结果，真是涨了见识

正好看到别的人分享的先留存一份，后续更新

用正则表达式取出table中的所有行（支持嵌套table）

此是通过csdn询问得高人之手写的。
谢谢gzdiablo

表达式:

<tr[^>]*>(?:(?:\s|\S)*?(?=<table|</tr>)(?(<table)<table[^>]*>(?:\s|\S)*?(?:</table>|(?:(?:<table[^>]*>(?:\s|\S)*?</table>(?:\s|\S)*?)*?</table>))(?:\s|\S)*?|))*</tr>

一条表达式就可以获取你想要的
写得好辛苦
测试:

<table width="300" border="1" cellspacing="0" cellpadding="0"> <tr> <td>&nbsp;</td> <td><table width="100%" border="1" cellspacing="0" cellpadding="0">  <tr>  <td>&nbsp;</td>  </tr> </table>  <table width="100%" border="1" cellspacing="0" cellpadding="0">  <tr>   <td>&nbsp;</td>  </tr>  </table></td> <td>&nbsp;</td> </tr> <tr> <td>&nbsp;</td> <td>&nbsp;</td> <td><table width="100%" border="1" cellspacing="0" cellpadding="0">  <tr>  <td>&nbsp;</td>  </tr> </table></td> </tr> <tr> <td><table width="100%" border="1" cellspacing="0" cellpadding="0">  <tr>  <td>&nbsp;</td>  </tr> </table></td> <td>&nbsp;</td> <td>&nbsp;</td> </tr></table>

-------------------获取3个match

============================================match1
  <tr>
    <td>&nbsp;</td>
    <td><table width="100%" border="1" cellspacing="0" cellpadding="0">
      <tr>
        <td>&nbsp;</td>
        </tr>

    </table>
      <table width="100%" border="1" cellspacing="0" cellpadding="0">
        <tr>
          <td>&nbsp;</td>
        </tr>
      </table></td>
    <td>&nbsp;</td>
  </tr>
==============================================match2
  <tr>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td><table width="100%" border="1" cellspacing="0" cellpadding="0">

      <tr>
        <td>&nbsp;</td>
        </tr>
    </table></td>
  </tr>
==============================================match3
  <tr>
    <td><table width="100%" border="1" cellspacing="0" cellpadding="0">
      <tr>
        <td>&nbsp;</td>
        </tr>

    </table></td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
  </tr>

正则表达式匹配html标签table

首先，要匹配任意内容“.”是不行的，因为不匹配“\n”，取不到想要的内容，所以有了如下表达式：
    [\s\S]*

当然，你也可以用 “[\d\D]*”、“[\w\W]*” 来表示。

现在我们来匹配一个html标签，匹配table如下：

<table.*?>[\s\S]*<\/table>
或
<table.*?>[\s\S]*?<\/table>

以上两个表达式，一个加了"?"和一个却不加“?”，那么这有什么区别呢？
我们知道“?”在正则表达式里是一个通配符：匹配前面的子表达式零次或一次，或指明一个非贪婪限定符。

在这里，通过测试，我们得出这样的结论：在不加“?”的情况下，在匹配下面一段内容的时候：

<table>这是第一个table</table>
我不是table里的内容
<table>这是第二个table</table>
我也不是table里的内容
<table>这是第三个table</table>

会把以<table>开始，</table>结束的内容都匹配出来

加了“?”之后，只匹配第n个匹配的内容

完整测试代码小编提供

<script>var str='<table>这是第一个table</table>';str+='我不是table里的内容';str+='<table>这是第二个table</table>';str+='我也不是table里的内容';str+='<table>这是第三个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>

效果图

以上就是正则表达式替换table表格中的样式与空标记(保留rowspan与colspan)的详细内容，更多关于正则表达式替换table表格的资料请关注其它相关文章！