如何用另一个div []元素替换一个div []元素？ [英] how to replace a div[ ] element with another div[ ] element?

问题描述

for ($i=0; $i<10; $i++)
{
  my $v1 = $sel->get_text("//body[\@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/**div**/table/tbody/tr/td/div/div");

my $v2 = $sel->get_text("//body[@\id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/**div**/table/tbody/tr/td[2]/div/div")

print ($v1 . $v2);
}

对于每次迭代，它必须找到从<$ c开始的第14个元素$ c> div [10] &将其替换为增加的 div [] 元素（例如：如果第14个元素是 div ，则将其替换为 div [2] 。在下一次iterartion中查找第14个元素，即 div [2] &替换为 div [3] & so on）。

For every iteration, it has to find the 14th element starting from div[10] & replace it with the increased div[ ] element (Ex: if 14th element is div, replace it by div[2]. In the next iterartion find 14th element i.e., div[2] & replace it by div[3] & so on ).

通过使用PATTERN匹配，它不能。有没有什么方法通过使用正则表达式来找到特定元素&取代它？

By using PATTERN matching, it can't. Is there any method by using regex for finding that particular element & replacing it ? how can i do it ?

 my $a = "//body[\@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/**div**/table/tbody/tr/td/div/div"; 
    my @arr = split ('/' , $a); 
    print "@arr \n"; 
    my $size1 = @arr; 
    print "$size1\n"; 
    print $arr[16]; 
    foreach my $a2 (@arr) 
    { 
    print "$a2 \n"; 
    }
my $b = "//body[\@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/**div**/table/tbody/tr/td[2]/div/div";

上述问题中提到的两个变量为v1& v2（编辑为$ a和$ b），修改必须适用于他们两个。我想我已经接近你所说的了。可以同时请进一步帮助我

Two variables as mentioned in the above question as v1 & v2 (edited as $a and $b), the modification has to apply for both of them. I think i'm almost near to what you've told. Can yoy please help me further

推荐答案

use 5.010;
my $xpath = q(//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div/table/tbody/tr/td/div/div);

for my $i (0..10) {
    my @nodes = split qr'/', $xpath;
    $nodes[16] .= "[$i]" unless 0 == $i;
    say join '/', @nodes;
}

结果：

Results:

//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[1]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[2]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[3]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[4]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[5]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[6]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[7]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[8]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[9]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[10]/table/tbody/tr/td/div/div

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