提取給定元素的XPath查詢

Question

有沒有一種方法可以提取XPath查詢字符串與JavaScript的給定元素，如螢火蟲「複製XPath」功能。

感謝

Answer 1

您是不是要找你需要的東西是這樣的：

var getXPath = function(aNode) { 
    var xpath = '', prevSibling = aNode, position = 1, nodeType = aNode.nodeType, nodeName = aNode.nodeName; 

    while (prevSibling = prevSibling.previousSibling) { 
     if (prevSibling.nodeType == nodeType && prevSibling.nodeName == nodeName) { 
      position += 1; 
     } 
    } 

    xpath = ((nodeType == 3 /* TEXT_NODE */) ? 'text()' : nodeName) + '[' + position + ']' + (xpath.length ? '/' + xpath : ''); 

    if (aNode.parentNode && aNode.parentNode.nodeName != 'BODY') { 
     return xpath = (getXPath(aNode.parentNode, xpath) + '/' + xpath).toLowerCase(); 
    } 

    return xpath; 
};