动态发表之后的显示时间

function getDateDiff(dateStr) {
var publishTime = getDateTimeStamp(dateStr) / 1000,
d_seconds,
d_minutes,
d_hours,
d_days,
timeNow = parseInt(new Date().getTime() / 1000),
d,
now=new Date(),
Y1 = now.getFullYear(),
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;
}
// console.log(Y==Y1);
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 > 1 && d_days < 2) {
return '昨天'+''+ H + ':' + m;;
}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 (Y==Y1&&d_days >= 2) {
return M + '月' + D + '日' +''+ H + ':' + m;
} else if (Y<Y1&&d_days >= 2) {
return Y + '年' + M + '月' + D + '日' +''+ H + ':' + m;
}
}
function getDateTimeStamp(dateStr) {
return Date.parse(dateStr.replace(/-/gi, "/"));
};
getDateDiff("2016-1-19 8:45");