vue 实时显示年月日时分秒星期上下午

export default class GlobalHeader extends Vue {
        time: any = ''
        timeFormate(dt: any) {

            let yy = dt.getFullYear();
            let mm = dt.getMonth() + 1;
            let dd = dt.getDate();
            let hh = dt.getHours();
            let mi = dt.getMinutes();
            let ss = dt.getSeconds();
            let dy = dt.getDay();
            let wk = "星期" + "日一二三四五六".charAt(dy);
            let sd = "上午";
            if (hh > 12) {
                hh = hh - 12;
                sd = "下午";
            }
            return yy + "年" + mm + "月" + dd + "日" + "   " + wk + "  " + sd + hh + ":" + mi + ":" + ss + " ";
        }

        mounted(){
            setInterval(()=>{
                this.time=this.timeFormate(new Date());
            },1000)
        }



    }