util.js
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/**
* 语义化时间转换
* @param {number} [timestamp] - 当前的时间，可传格式化的字符串或时间戳
*/
function convertDate(timestamp=Date.now()){
// pass in `yyyy-mm-dd hh:ii:ss`
// convert to `yyyy-mm-ddThh:ii:ss.000+08:00`
const targetTimestamp = Number(timestamp) ? timestamp : Date.parse(`${timestamp.split(' ').join('T')}.000+08:00`);
const diff = new Date().getTime() - targetTimestamp;
let time = '';
//小于5分钟->刚刚
if(diff < 5*60*1000){
time = '刚刚';
}
//小于1小时->xx分钟前
else if(diff < 1*60*60*1000){
time = parseInt(diff/1000/60) + '分钟前';
}
//小于24小时->xx小时前
else if(diff < 24*60*60*1000){
time = parseInt(diff/1000/60/60) + '小时前';
}
//小于30天->xx天前
else if(diff < 30*24*60*60*1000){
time = parseInt(diff/1000/60/60/24) < 2 ? '昨天' : (parseInt(diff/1000/60/60/24) + '天前');
}
//小于1年->xx个月前
else if(diff < 365*24*60*60*1000){
time = parseInt(diff/1000/60/60/24/30) + '个月前';
}
//x年x月前
else{
let days = parseInt(diff/1000/60/60/24);
time = parseInt(days/365) + '年' + (parseInt(days%365/30) ? (parseInt(days%365/30) + '个月前') : '前');
}
return time;
};
/**
* 时间戳转化为日期
* @param {string} [formateString] 要转化的格式，默认 'y-m-d h:i:s'
* @param {number} [timestamp] 要转化的时间戳，默认 Date.now()
* @returns {string} 格式化后的日期
*/
function timestampToDate(formateString='y-m-d h:i:s', timestamp=Date.now()){
if(isNaN(+timestamp)){
console.error('util.timeStampToDate: timestamp is invilid.');
return null;
}
if(String(timestamp).length === 10){
timestamp *= 1000;
}
const reg = /y|m|d|h|i|s/g;
const date = new Date(+timestamp);
const saithToDual = time => {
if(time.toString().length < 2){
time = '0' + time;
}
return time;
};
return formateString.replace(reg, function($1){
switch($1){
case 'y':
return date.getFullYear();
case 'm':
return saithToDual(date.getMonth() + 1);
case 'd':
return saithToDual(date.getDate());
case 'h':
return saithToDual(date.getHours());
case 'i':
return saithToDual(date.getMinutes());
case 's':
return saithToDual(date.getSeconds());
}
return $1;
});
};
module.exports = {
convertDate,
timestampToDate
};