正则表达式替换table表格中的样式与空标记(保留
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://.17ce./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://.17ce./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://.17ce./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://.17ce./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.</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://.17ce./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://.17ce./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://.17ce./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://.17ce./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.</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="//img.jbzj./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="//img.jbzj./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|\ \;| | |\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> </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>
-------------------获取3个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>
正则表达式匹配html标签table
,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]
,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,在匹配狼蚁网站SEO优化一段内容的时候
<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
完整测试代码狼蚁SEO长沙网络推广提供
<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表格的资料请关注狼蚁SEO其它相关文章!
编程语言
- 如何快速学会编程 如何快速学会ug编程
- 免费学编程的app 推荐12个免费学编程的好网站
- 电脑怎么编程:电脑怎么编程网咯游戏菜单图标
- 如何写代码新手教学 如何写代码新手教学手机
- 基础编程入门教程视频 基础编程入门教程视频华
- 编程演示:编程演示浦丰投针过程
- 乐高编程加盟 乐高积木编程加盟
- 跟我学plc编程 plc编程自学入门视频教程
- ug编程成航林总 ug编程实战视频
- 孩子学编程的好处和坏处
- 初学者学编程该从哪里开始 新手学编程从哪里入
- 慢走丝编程 慢走丝编程难学吗
- 国内十强少儿编程机构 中国少儿编程机构十强有
- 成人计算机速成培训班 成人计算机速成培训班办
- 孩子学编程网上课程哪家好 儿童学编程比较好的
- 代码编程教学入门软件 代码编程教程