相当于Internet Explorer中Firebug的“复制xpath”?

我会用书签。我有一个与xpath相关的,但我不知道它在IE中是否有效。我得走了,但我会测试它,如果它在IE上有效的话,我会给出它。

从我的书签中为Web开发人员提供两个书签网站: Subsimple's bookmarklets 和 Squarefree's Bookmarklets . 那里有很多有用的东西…

[编辑]好的,我回来了。我买的书签只是FF的,不是最理想的。我最终重写了它,尽管使用了原作中的思想。找不到我找到它的地方。

扩展JS:

function getNode(node)
{
  var nodeExpr = node.tagName;
  if (nodeExpr == null)  // Eg. node = #text
    return null;
  if (node.id != '')
  {
    nodeExpr += "[@id='" + node.id + "']";
    // We don't really need to go back up to //HTML, since IDs are supposed
    // to be unique, so they are a good starting point.
    return "/" + nodeExpr;
  }
// We don't really need this
//~   if (node.className != '')
//~   {
//~     nodeExpr += "[@class='" + node.className + "']";
//~   }
  // Find rank of node among its type in the parent
  var rank = 1;
  var ps = node.previousSibling;
  while (ps != null)
  {
    if (ps.tagName == node.tagName)
    {
      rank++;
    }
    ps = ps.previousSibling;
  }
  if (rank > 1)
  {
    nodeExpr += '[' + rank + ']';
  }
  else
  {
    // First node of its kind at this level. Are there any others?
    var ns = node.nextSibling;
    while (ns != null)
    {
      if (ns.tagName == node.tagName)
      {
        // Yes, mark it as being the first one
        nodeExpr += '[1]';
        break;
      }
      ns = ns.nextSibling;
    }
  }
  return nodeExpr;
}

var currentNode;
// Standard (?)
if (window.getSelection != undefined) 
  currentNode = window.getSelection().anchorNode;
// IE (if no selection, that's BODY)
else 
  currentNode = document.selection.createRange().parentElement();
if (currentNode == null)
{
  alert("No selection");
  return;
}
var path = [];
// Walk up the Dom
while (currentNode != undefined)
{
  var pe = getNode(currentNode);
  if (pe != null)
  {
    path.push(pe);
    if (pe.indexOf('@id') != -1)
      break;  // Found an ID, no need to go upper, absolute path is OK
  }
  currentNode = currentNode.parentNode;
}
var xpath = "/" + path.reverse().join('/');
alert(xpath);
// Copy to clipboard
// IE
if (window.clipboardData) clipboardData.setData("Text", xpath);
// FF's code to handle clipboard is much more complex 
// and might need to change prefs to allow changing the clipboard content.
// I omit it here as it isn't part of the original request.

您必须选择元素并激活bookmarklet以获取其xpath。

现在,书签版本(感谢 Bookmarklet Builder ):

工业工程
(我不得不把它分成两部分,因为IE不喜欢很长的书签(最大尺寸因IE版本而异!)。您必须先激活第一个(功能定义),然后激活第二个。用IE6测试。)

javascript:function getNode(node){var nodeExpr=node.tagName;if(!nodeExpr)return null;if(node.id!=''){nodeExpr+="[@id='"+node.id+"']";return "/"+nodeExpr;}var rank=1;var ps=node.previousSibling;while(ps){if(ps.tagName==node.tagName){rank++;}ps=ps.previousSibling;}if(rank>1){nodeExpr+='['+rank+']';}else{var ns=node.nextSibling;while(ns){if(ns.tagName==node.tagName){nodeExpr+='[1]';break;}ns=ns.nextSibling;}}return nodeExpr;}
javascript:function o__o(){var currentNode=document.selection.createRange().parentElement();var path=[];while(currentNode){var pe=getNode(currentNode);if(pe){path.push(pe);if(pe.indexOf('@id')!=-1)break;}currentNode=currentNode.parentNode;}var xpath="/"+path.reverse().join('/');clipboardData.setData("Text", xpath);}o__o();

FF

javascript:function o__o(){function getNode(node){var nodeExpr=node.tagName;if(nodeExpr==null)return null;if(node.id!=''){nodeExpr+="[@id='"+node.id+"']";return "/"+nodeExpr;}var rank=1;var ps=node.previousSibling;while(ps!=null){if(ps.tagName==node.tagName){rank++;}ps=ps.previousSibling;}if(rank>1){nodeExpr+='['+rank+']';}else{var ns=node.nextSibling;while(ns!=null){if(ns.tagName==node.tagName){nodeExpr+='[1]';break;}ns=ns.nextSibling;}}return nodeExpr;}var currentNode=window.getSelection().anchorNode;if(currentNode==null){alert("No selection");return;}var path=[];while(currentNode!=undefined){var pe=getNode(currentNode);if(pe!=null){path.push(pe);if(pe.indexOf('@id')!=-1)break;}currentNode=currentNode.parentNode;}var xpath="/"+path.reverse().join('/');alert(xpath);}o__o();

既然书签使用了迷惑不解的保罗,我想我应该对他们的使用加一点介绍。我在一个单独的信息中这样做是为了避免混淆东西。

书签(也称为favlets)是一种小的javascript脚本(sic),设计用于粘贴到浏览器的地址栏中(与任何其他URL一样),从而在当前页面上运行。
运行它之后(粘贴,点击回车),你可以将它添加到书签中重新使用(添加到IE的收藏夹中)。请注意,浏览器可能会将原始URL添加为书签,然后您必须编辑书签并用脚本替换该URL。
当然,您也可以将其添加到URL栏,以便快速访问。

这些脚本就像是当前页面的一部分,访问全局JS变量和函数、DOM对象等。
它们可以非常简单,就像种子一样 javascript: alert("Hello world!"); 或者像上面的那个很复杂。如果返回值(或者最后一个表达式有值),则该值将替换当前页。为了避免这种情况,您可以使用 alert (显示结果)或将脚本包装在函数定义中并调用此函数,就像上面所做的那样。(有些人还把空(0)放在最后,但我认为这被视为不好的做法。)

函数解决方案的优点是使脚本的所有变量都成为小程序的本地变量(如果用 var 当然),避免与本地页面上的脚本发生干扰/副作用。这也是为什么包装函数的名称不可能与本地脚本冲突的原因。

请注意,有些浏览器(读作“ie”)可以限制favlet的大小,其最大长度随版本而变化(趋于减小)。这就是为什么所有无用的空白都被删除的原因(上面链接的bookmarlet构建器很好地解决了这个问题),并且我删除了与空值和未定义值的显式比较,我通常这样做。我还必须将favlet分为两部分,第一部分定义一个函数(只要页面没有更改/刷新就活),第二部分使用它。

非常有用的工具,特别是在不允许用户脚本(_la greasemonkey)或没有此扩展的浏览器上。

我已经把书签代码改写成了C,所以如果你觉得它有用,就用它;-)

using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;

namespace Anotation.Toolbar
{
    class XPath
    {
        public static string getXPath(mshtml.IHTMLElement element)
        {
            if (element == null)
                return "";
            mshtml.IHTMLElement currentNode = element;
            ArrayList path = new ArrayList();

            while (currentNode != null)
            {
                string pe = getNode(currentNode);
                if (pe != null)
                {
                    path.Add(pe);
                    if (pe.IndexOf("@id") != -1)
                        break;  // Found an ID, no need to go upper, absolute path is OK
                }
                currentNode = currentNode.parentElement;
            }
            path.Reverse();
            return join(path, "/");
        }

        private static string join(ArrayList items, string delimiter)
        {
          StringBuilder sb = new StringBuilder();
          foreach (object item in items)
          {
            if (item == null)
                continue;

            sb.Append(delimiter);
            sb.Append(item);
          }
          return sb.ToString();
        }

        private static string getNode(mshtml.IHTMLElement node)
        {
            string nodeExpr = node.tagName;
            if (nodeExpr == null)  // Eg. node = #text
                return null;
            if (node.id != "" && node.id != null)
            {
                nodeExpr += "[@id='" + node.id + "']";
                // We don't really need to go back up to //HTML, since IDs are supposed
                // to be unique, so they are a good starting point.
                return "/" + nodeExpr;
            }

            // Find rank of node among its type in the parent
            int rank = 1;
            mshtml.IHTMLDOMNode nodeDom = node as mshtml.IHTMLDOMNode;
            mshtml.IHTMLDOMNode psDom = nodeDom.previousSibling;
            mshtml.IHTMLElement ps = psDom as mshtml.IHTMLElement;
            while (ps != null)
            {
                if (ps.tagName == node.tagName)
                {
                    rank++;
                }
                psDom = psDom.previousSibling;
                ps = psDom as mshtml.IHTMLElement;
            }
            if (rank > 1)
            {
                nodeExpr += "[" + rank + "]";
            }
            else
            { // First node of its kind at this level. Are there any others?
                mshtml.IHTMLDOMNode nsDom = nodeDom.nextSibling;
                mshtml.IHTMLElement ns = nsDom as mshtml.IHTMLElement;
                while (ns != null)
                {
                    if (ns.tagName == node.tagName)
                    { // Yes, mark it as being the first one
                        nodeExpr += "[1]";
                        break;
                    }
                    nsDom = nsDom.nextSibling;
                    ns = nsDom as mshtml.IHTMLElement;
                }
            }
            return nodeExpr;
        }
    }
}