JS时间戳与日期格式的相互转换

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1. 将时间戳转换成日期格式：

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

 timestampToTime(1403058804);

 console.log(timestampToTime(1403058804));//2014-06-18 10:33:24

2. 将日期格式转换成时间戳：

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   +精确到毫秒+
    console.log(time2);//1398250549123   +精确到毫秒+
    console.log(time3);//1398250549000   +精确到秒后面用0代替+