�色
                document.evaluate(xpath, document).iterateNext().style.pointerEvents = ""; //上个元素改回原来元素的背景颜色
                }catch{
                  console.log("not found");
                }
                style = oe.style.backgroundColor;
                exist = 0;
                for(o of nodeList){
                    if(o["node"] == oe){
                        exist = 1;
                        break;
                    }
                }
                if(exi