js获取实时时间

话不多说，直接上代码！

 //显示当前时间（年月日时分秒）
                timeFormate(timeStamp) {
                    let year = new Date(timeStamp).getFullYear();
                    let month =
                        new Date(timeStamp).getMonth() + 1 < 10
                            ? "0" + (new Date(timeStamp).getMonth() + 1)
                            : new Date(timeStamp).getMonth() + 1;
                    let date =
                        new Date(timeStamp).getDate() < 10
                            ? "0" + new Date(timeStamp).getDate()
                            : new Date(timeStamp).getDate();
                    let hh =
                        new Date(timeStamp).getHours() < 10
                            ? "0" + new Date(timeStamp).getHours()
                            : new Date(timeStamp).getHours();
                    let mm =
                        new Date(timeStamp).getMinutes() < 10
                            ? "0" + new Date(timeStamp).getMinutes()
                            : new Date(timeStamp).getMinutes();
                    let ss =
                        new Date(timeStamp).getSeconds() < 10
                            ? "0" + new Date(timeStamp).getSeconds()
                            : new Date(timeStamp).getSeconds();
                    let week = new Date(timeStamp).getDay();
                    let weeks = ["日", "一", "二", "三", "四", "五", "六"];
                    let getWeek = "星期" + weeks[week];
                    this.nowTime =
                        year +
                        "-" +
                        month +
                        "-" +
                        date +
                        " " +
                        hh +
                        ":" +
                        mm +
                        ":" +
                        ss;
                },
                nowTimes() {
                    this.timeFormate(new Date());
                    setInterval(this.nowTimes, 1000);
                    this.clear();
                },
                clear() {
                    clearInterval(this.nowTimes);
                    this.nowTimes = null;
                },

原理就是每次更新时间后，给个1000毫秒的定时器，也就是1秒，然后清除定时器再去创建，以此反复就形成了实时获取时间的效果