js 关于 时间转换

[mcya]

时间关系

[mcya]

昨天、今天、明天 - 常规式

//昨天的时间
var getYesterday = new Date();
getYesterday.setTime(getYesterday.getTime()-24*60*60*1000);
var s1 = getYesterday.getFullYear()+"-" + (getYesterday.getMonth()+1) + "-" + getYesterday.getDate();

//今天的时间
var getToday = new Date();
getToday.setTime(getToday.getTime());
var s2 = getToday.getFullYear()+"-" + (getToday.getMonth()+1) + "-" + getToday.getDate();

//明天的时间
var getTomorrow = new Date();
getTomorrow.setTime(getTomorrow.getTime()+24*60*60*1000);
var s3 = getTomorrow.getFullYear()+"-" + (getTomorrow.getMonth()+1) + "-" + getTomorrow.getDate();

[mcya]

昨天、今天、明天 - 函数式 - 相对来说比较灵活

// format 格式化函数
Date.prototype.format = function (fmt) {
    var o = {
        "M+": this.getMonth() + 1, //月份
        "d+": this.getDate(), //日
        "h+": this.getHours(), //小时
        "m+": this.getMinutes(), //分
        "s+": this.getSeconds(), //秒
        "q+": Math.floor((this.getMonth() + 3) / 3), //季度
        "S": this.getMilliseconds() //毫秒
    };
    if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
    for (var k in o)
        if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
    return fmt;
}

var everyDay = new Date();
everyDay.setDate(everyDay.getDate() - 1); // `-1`昨天，`+1`明天，`-30`一个月前
var s1 = everyDay.format("yyyy-MM-dd");