uniapp-JS时间戳转换

happenTimeFun(num){//时间戳数据处理
        let date = new Date(num);
         //时间戳为10位需*1000，时间戳为13位的话不需乘1000
        let y = date.getFullYear();
        let MM = date.getMonth() + 1;
        MM = MM < 10 ? ('0' + MM) : MM;//月补0
        let d = date.getDate();
        d = d < 10 ? ('0' + d) : d;//天补0
        let h = date.getHours();
        h = h < 10 ? ('0' + h) : h;//小时补0
        let m = date.getMinutes();
        m = m < 10 ? ('0' + m) : m;//分钟补0
        let s = date.getSeconds();
        s = s < 10 ? ('0' + s) : s;//秒补0
        return y + '-' + MM + '-' + d + ' ' + h + ':' + m+ ':' + s;
},

saveTiming(){//时间戳数据处理
        let m=this;
        let str=''              
        let date = new Date(m.value1);  
        str=date.getFullYear() + '-' + (date.getMonth() + 1) + '-' + date.getDate() + ' ' + m.checkTime(date.getHours()) + ':' + m.checkTime(date.getMinutes()) + ':' + m.checkTime(date.getSeconds()); 
        return str
},

checkTime(time){//时间补零
        let str=''
        if(time<10){
            str='0'+time
        }else{
            str=time
        }
        return str
},

timeProcessing(){
    let timeDate = "2022-06-04 12:49:33";
    let Time = new Date(timeDate);
    console.log(Time)
    let timestemp = Time.getTime();
    console.log(timestemp)//1561345728000
}