Convert timestamp to date? Convert date to timestamp? How to get current time?

1. Convert date to timestamp (comparable date size)

let startTime = new Date(this.text.beginTime.replace(/-/g, '/')).getTime();

//替换掉this.text.beginTime即可

//方法2
var date = new Date('2014-04-23 18:55:49:123');
    // 有三种方式获取
    var time1 = date.getTime();
    var time2 = date.valueOf();
    var time3 = Date.parse(date);
    console.log(time1);//1398250549123
    console.log(time2);//1398250549123
    console.log(time3);//1398250549000

2. How to convert timestamp to date format

function timestampToTime(timestamp) {
    
    

        var date = new Date(timestamp * 1000);//时间戳为10位需*1000，时间戳为13位的话不需乘1000

        Y = date.getFullYear() + '-';
        M = (date.getMonth()+1 < 10 ? '0'+(date.getMonth()+1) : date.getMonth()+1) + '-';
        D = date.getDate() + ' ';
        h = date.getHours() + ':';
        m = date.getMinutes() + ':';
        s = date.getSeconds();

        return Y+M+D+h+m+s;

    }

//调用函数
    timestampToTime(1403058804);
//打印值
    console.log(timestampToTime(1403058804));//2014-06-18 10:33:24

Note: If it is a Unix timestamp, remember to multiply it by 1000.

3. How to get the timestamp of the current time

Number(new Date())

new Date() is today's
Number is formatted as a number