时间格式转换

   //时间格式转换

        const date = new Date('1998-01-27 10:11:12')

        function dateFormat(date, format = 'YYYY-MM-DD HH:mm:ss') {

            const config = {

                YYYY: date.getFullYear(),

                MM: date.getMonth() + 1,

                DD: date.getDate(),

                HH: date.getHours(),

                mm: date.getMinutes(),

                ss: date.getSeconds()

            }

            for (const key in config) {

                format = format.replace(key, config[key]);

            }

            return format

        }

        console.log(dateFormat(date, "YYYY年MM月DD日"))

        //转时间戳

        let date1 = new Date('1998-01-27 10:11:12')

        console.log(date1 * 1)

        //时间戳转时间

        let date2 = new Date(date1 * 1)

        console.log(date2)

        function demo(shijianchuo) {

            let date = new Date(shijianchuo)

            let YYYY = date.getFullYear()

            let MM = date.getMonth() + 1

            let DD = date.getDate()

            let HH = date.getHours()

            let mm = date.getMinutes()

            let ss = date.getSeconds()

            let newDate = `${YYYY}-${MM}-${DD}  ${HH}:${mm}:${ss}`

            console.log(newDate, 'newDate')

        }

        demo(1606832838920)