js 类似发微博或者微信朋友圈的时间显示 刚刚 几天前

function getDateDiff(dateStr) {
var publishTime = getDateTimeStamp(dateStr) / 1000,
d_seconds,
d_minutes,
d_hours,
d_days,
timeNow = parseInt(new Date().getTime() / 1000),
d,

date = new Date(publishTime * 1000),
Y = date.getFullYear(),
M = date.getMonth() + 1,
D = date.getDate(),
H = date.getHours(),
m = date.getMinutes(),
s = date.getSeconds();
//小于10的在前面补0
if (M < 10) {
M = '0' + M;
}
if (D < 10) {
D = '0' + D;
}
if (H < 10) {
H = '0' + H;
}
if (m < 10) {
m = '0' + m;
}
if (s < 10) {
s = '0' + s;
}

d = timeNow - publishTime;
d_days = parseInt(d / 86400);
d_hours = parseInt(d / 3600);
d_minutes = parseInt(d / 60);
d_seconds = parseInt(d);

if (d_days > 0 && d_days < 3) {
return d_days + '天前';
} else if (d_days <= 0 && d_hours > 0) {
return d_hours + '小时前';
} else if (d_hours <= 0 && d_minutes > 0) {
return d_minutes + '分钟前';
} else if (d_seconds < 60) {
if (d_seconds <= 0) {
return '刚刚';
} else {
return d_seconds + '秒前';
}
} else if (d_days >= 3 && d_days < 30) {
return M + '-' + D + ' ' + H + ':' + m;
} else if (d_days >= 30) {
return Y + '-' + M + '-' + D + ' ' + H + ':' + m;
}
}

function getDateTimeStamp(dateStr) {
return Date.parse(dateStr.replace(/-/gi, "/"));
}