Function getElementXpath

element-xpath.js:19–63

(el, callback)

    // Create a safe reference to the getElementXpath object for use below.
    getElementXpath = function (el, callback) {
      var err, result, nodes, i, n, segments, siblings, id_count;
      try {
        if (callback && (typeof callback !== "function")) {
          throw new Error("Invalid callback supplied");
        }

        // We need to get all the tags on the document,
        nodes = getElementXpath.getNodes(el);

        segments = [];
        while (el && el.nodeType === 1) {
          if (el.hasAttribute("id")) {
            segments = addIdSegments(el, nodes, segments);
            if (typeof segments === 'string') {
              result = segments;
              break;
            }
          } else if (el.hasAttribute("class")) {
            segments = addClassSegment(el, nodes, segments);
          } else {
            segments = addSiblingSegment(el, nodes, segments);
          }
          el = el.parentNode;
        }

        if (!result && segments.length) {
          result = "/" + segments.join("/");
        }

      } catch (err) {
        // On sync mode the error will be included on the callback
        // remove if only async is supported
        if (!callback) {
          throw err;
        }
      }

      // Async mode, remove condition if only async is supported
      if (callback) {
        callback(err, result);
      } else {
        return result;
      }
    };


  // Run getElementXpath in *noConflict* mode, returning the `getElementXpath`