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正則表達式替換table表格中的樣式與空標記(保留rowspan與colspan)

 更新時間:2020年04月11日 13:12:46   投稿:mdxy-dxy  
最近幾天的勞動成果,用正則表達式去除表格中的樣式與class方便后臺編輯的操作,在編寫過程中不斷進步,后續(xù)將不定時更新,需要的朋友可以參考下

完整測試代碼

<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)"  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)"  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)"  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)"  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)"  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)"  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)"  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)"  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="http://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="http://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

//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|\&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

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:

<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>

-------------------獲取3個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>

<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

完整測試代碼腳本之家小編提供

<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)注腳本之家其它相關(guān)文章!

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