code: function getDomPath(target, isAllDom){
          var arrAllPaths = [];
          var node = target, path;
          while(node){
              var nodeName = node.nodeName.toLowerCase();
              if(/^#document/.test(nodeName)){
                  path = getRelativeDomPath(node, target, isAllDom);
                  if(path){
                      arrAllPaths.push(path);
                  }
                  node = node.parentNode || node.host;
                  target = node;
              }
              else{
                  node = node.parentNode || node.host;
              }
          }
          return arrAllPaths.length > 0 ? arrAllPaths.reverse().join(' /deep/ ') : null;
      }
docs: get selector path