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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/dateFormat1.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: 2021-06-10 17:55:31
* @Description:
*/
/**
* 日期格式化
* 时间规则：
* 今天显示：xx:xx
* 昨天显示：昨天 xx:xx
* 一周内显示：星期x xx:xx
* 一年内显示：xx月xx日 xx:xx
* 更早日期显示：xx年xx月xx日 xx:xx
* @param {*} value 时间戳，单位s
* @return {*} 格式化后的日期
*/
export function dateFormat1(value) {
if (!value) return "";
const time = value * 1000;
const now = new Date().getTime();
const year = new Date(time).getFullYear();
const month = new Date(time).getMonth() + 1;
const date = new Date(time).getDate();
let hour = new Date(time).getHours();
let min = new Date(time).getMinutes();
const weekType = ["日", "一", "二", "三", "四", "五", "六"];
const week = "星期" + weekType[new Date(time).getDay()];
if (min < 10) {
min = "0" + min;
}
if (hour < 10) {
hour = "0" + hour;
}
if (new Date().getDate() - new Date(time).getDate() === 0) {
return hour + ":" + min;
} else if (new Date().getDate() - new Date(time).getDate() === 1) {
return "昨天 " + hour + ":" + min;
} else if (
new Date().getTime() < new Date(time).getTime() &&
new Date().getDate() - new Date(time).getDate() < 7 &&
new Date().getDay() - new Date(time).getDay() > 0
) {
return week + hour + ":" + min;
} else if (year < new Date(now).getFullYear()) {
return year + "年" + month + "月" + date + "日 " + hour + ":" + min;
} else {
return month + "月" + date + "日 " + hour + ":" + min;
}
}
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