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js工具库 封装常用的工具函数 如深拷贝 时间转换日期格式化、浏览器判断等，提高开发效率
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<h1 class="page-title">Source: dateFormat/dateFormat2.js</h1>
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<pre class="prettyprint source linenums"><code>/*
* @Author: zhangyu
* @Email: zhangdulin@outlook.com
* @Date: 2021-06-08 11:30:40
* @LastEditors: zhangyu
* @LastEditTime: 2021-08-25 15:51:30
* @Description:
*/
/**
* 日期格式化
* 时间规则：
* 小于一分钟显示：刚刚
* 1分钟-60分钟内显示：xx分钟前
* 大于60分钟显示：xx小时前
* 昨天显示：昨天 xx:xx
* 更早日期显示：xx-xx-xx xx:xx
* @param {*} dateTimeStamp 时间戳，单位s
* @return {*} 格式化后的日期
*/
export function dateFormat2(dateTimeStamp) {
if (!dateTimeStamp) return "";
dateTimeStamp = dateTimeStamp * 1000;
var minute = 1000 * 60; // 把分，时，天，周，半个月，一个月用毫秒表示
var hour = minute * 60;
var now = new Date().getTime(); // 获取当前时间毫秒
var result = "";
var diffValue = now - dateTimeStamp; // 时间差
if (diffValue < 0) {
return '不久前';
}
var minC = diffValue / minute; // 计算时间差的分，时，天，周，月
var hourC = diffValue / hour;
var datetime = new Date();
datetime.setTime(dateTimeStamp);
var Nyear = datetime.getFullYear();
var Nmonth = datetime.getMonth() + 1 < 10 ? "0" + (datetime.getMonth() + 1) : datetime.getMonth() + 1;
var Ndate = datetime.getDate() < 10 ? "0" + datetime.getDate() : datetime.getDate();
var Nhour = datetime.getHours() < 10 ? "0" + datetime.getHours() : datetime.getHours();
var Nminute = datetime.getMinutes() < 10 ? "0" + datetime.getMinutes() : datetime.getMinutes();
if (hourC >= 1 && hourC < 24) {
result = " " + parseInt(hourC) + "小时前";
} else if (hourC >= 24 && hourC < 48 && new Date().getDate() - Ndate === 1) {
result = "昨天 " + Nhour + ":" + Nminute;
} else if (minC >= 1 && minC < 60) {
result = " " + parseInt(minC) + "分钟前";
} else if (diffValue >= 0 && diffValue <= minute) {
result = "刚刚";
} else {
result = Nyear + "-" + Nmonth + "-" + Ndate + " " + Nhour + ":" + Nminute;
}
return result;
}
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