正则表达式替换table表格中的样式与空标记(保留rowspan与colspan)-巨人网络通讯

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

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">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 [中国浙江宁波电信]/font>br />/td>/tr>/table>';

str+='p>img alt="" src="//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="//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">\nnbsp;\/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 \/>\nnbsp;\/p>/ig, "/p>");
str=str.replace(/br>\nnbsp;\/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

完整测试代码脚本之家小编提供

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