139 lines
3.6 KiB
JavaScript
139 lines
3.6 KiB
JavaScript
/**
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*
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*/
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function DateParser() {
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this.weekArr = ["周一", "周二", "周三", "周四", "周五"];
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}
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DateParser.prototype._padLeftZero = function (str) {
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str = String(str);
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return ("00" + str).substr(str.length);
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};
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DateParser.prototype.getLocalTime = function (nS) {
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//转化时间格式
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let targetDate;
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if (typeof parseInt(nS) != "number") {
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targetDate = new Date(nS);
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} else {
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targetDate = new Date(parseInt(nS) * 1000);
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}
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let str =
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targetDate.getFullYear() +
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"-" +
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this._padLeftZero(targetDate.getMonth() + 1) +
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"-" +
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this._padLeftZero(targetDate.getDate()) +
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" " +
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this._padLeftZero(targetDate.getHours()) +
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":" +
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this._padLeftZero(targetDate.getMinutes() + 1);
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let currentDate = new Date();
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let $_time_day = currentDate.getDate();
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let $_time_month = currentDate.getMonth() + 1;
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let $_time_year = currentDate.getFullYear();
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// let $_time_week = currentDate.getDay();
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let timeText = "";
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let time = str.substr(11, 5);
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if (this.isYesterday(currentDate, targetDate) == 1) {
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timeText = "昨天";
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return timeText + " " + time;
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}
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//判断是不是同一个星期，如果是就排除 今天，昨天 这两天
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let isWeekFlag = this.isWeek(currentDate, targetDate);
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if (isWeekFlag.is) {
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if (isWeekFlag.cWeek - isWeekFlag.tWeek >= 2) {
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timeText = this.weekArr[isWeekFlag.tWeek - 1];
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return timeText + " " + time;
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}
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}
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if (str.substr(0, 4) == $_time_year) {
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//同一年份
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if (str.substr(5, 2) == $_time_month) {
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//同一月份
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if (str.substr(8, 2) == $_time_day) {
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return time;
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} else {
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timeText = str.substr(5, 5);
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}
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} else {
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timeText = str.substr(5, 5);
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}
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} else {
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timeText = str.substr(0, 7);
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}
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return timeText + " " + time;
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};
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//返回出相隔多少天，如果返回 1 就代表昨天
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DateParser.prototype.isYesterday = function (currentDate, targetDate) {
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let t = new Date(
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targetDate.getFullYear() +
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"/" +
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(targetDate.getMonth() + 1) +
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"/" +
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targetDate.getDate()
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);
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let c = new Date(
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currentDate.getFullYear() +
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"/" +
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(currentDate.getMonth() + 1) +
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"/" +
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currentDate.getDate()
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);
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let dateNum = (c.getTime() - t.getTime()) / (24 * 3600 * 1000);
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return dateNum;
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};
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//判断你传进来的那个时间与当前时间是否为同一个星期
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DateParser.prototype.isWeek = function (currentDate, targetDate) {
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let t = new Date(
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targetDate.getFullYear() +
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"/" +
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(targetDate.getMonth() + 1) +
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"/" +
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targetDate.getDate()
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);
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let c = new Date(
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currentDate.getFullYear() +
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"/" +
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(currentDate.getMonth() + 1) +
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"/" +
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currentDate.getDate()
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);
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let tWeek = t.getDay() == 0 ? 7 : t.getDay(); //星期天是0，手动改为 7
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let cWeek = c.getDay() == 0 ? 7 : c.getDay();
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let is = true;
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let dateNum = (c.getTime() - t.getTime()) / (24 * 3600 * 1000);
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if (dateNum >= 7) {
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//超出或等于7天就不是在同一个星期内
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is = false;
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} else {
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if (tWeek == cWeek) {
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//同一天，间隔小于7天 且星期相等为同一天
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is = true;
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} else {
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if (cWeek <= tWeek) {
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// 如果当前是星期2，而目标日期为星期5 则不同星期
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is = false;
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} else {
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//只有当 目标星期 小于当前日期 才有可能为同个星期
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//就是说 你传进来的时间是星期2，当前是星期5，他们的间隔小于7天就是同一个星期
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is = true;
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}
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}
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}
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return { is, cWeek, tWeek };
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};
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let dateParserTime = new DateParser();
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export default dateParserTime.getLocalTime.bind(dateParserTime);
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