ay").css({backgroundColor: activeColor});
        //
        //     chain.forEach((val)=>{
        //       let elem = $("#" + val.unitFlag + "-" + val.app);
        //       elem.css({backgroundColor: activeColor});
        //     });
        // }

        function drawArrow() {
            let activeColor = "#FFCC66";
            activeColor = "#00CC66";

            let interval = 700;

            let chainNode = $("#chain");
            let chain = JSON.parse(chainNode.val());
            let num = cha