這里匯總了js實現時間顯示幾天前、幾小時前或者幾分鐘前的常見方法。分享給大家供大家參考。具體如下：
方法一：
個人做法是保存時間戳，然后在前端用jq插件做轉換，比如 smart-time-ago
方法二：
（通過freemarker模板）如果用freemarker模板可以這樣寫，別的模板類推
根據自己的意愿修改條件和輸出，把你的datetime傳進去即可
<#macro timeline_dt datetime=.now> <#assign ct = (.now?long-datetime?long)/1000> <#if ct gte 31104000><#--n年前-->${(ct/31104000)?int}年前 <#t><#elseif ct gte 2592000><#--n月前-->${(ct/2592000)?int}個月前 <#t><#elseif ct gte 86400*2><#--n天前-->${(ct/86400)?int}天前 <#t><#elseif ct gte 86400><#--1天前-->昨天 <#t><#elseif ct gte 3600><#--n小時前-->${(ct/3600)?int}小時前 <#t><#elseif ct gte 60><#--n分鐘前-->${(ct/60)?int}分鐘前 <#t><#elseif ct gt 0><#--n秒前-->${ct?int}秒前 <#t><#else>剛剛 </#if> </#macro> 方法三：
找到一個專門的插件PrettyTime
public static void main(String[] args) { PrettyTime p = new PrettyTime(); System.out.println(p.format(DateUtils.addDays(new Date(), 2)));} 方法四：
自定義Java方法：
private final static long minute = 60 * 1000;// 1分鐘 private final static long hour = 60 * minute;// 1小時 private final static long day = 24 * hour;// 1天 private final static long month = 31 * day;// 月 private final static long year = 12 * month;// 年 /** * 返回文字描述的日期 * * @param date * @return */ public static String getTimeFormatText(Date date) { if (date == null) { return null; } long diff = new Date().getTime() - date.getTime(); long r = 0; if (diff > year) { r = (diff / year); return r + "年前"; } if (diff > month) { r = (diff / month); return r + "個月前"; } if (diff > day) { r = (diff / day); return r + "天前"; } if (diff > hour) { r = (diff / hour); return r + "個小時前"; } if (diff > minute) { r = (diff / minute); return r + "分鐘前"; } return "剛剛"; }方法五：
使用js插件：（原版的timeago.js）
// Smart Time Ago v0.1.0 // Copyright 2012, Terry Tai, Pragmatic.ly // https://pragmatic.ly/ // Licensed under the MIT license. // https://github.com/pragmaticly/smart-time-ago/blob/master/LICENSE (function() { var TimeAgo; TimeAgo = (function() { function TimeAgo(element, options) { this.startInterval = 60000; this.init(element, options); } TimeAgo.prototype.init = function(element, options) { this.$element = $(element); this.options = $.extend({}, $.fn.timeago.defaults, options); this.updateTime(); return this.startTimer(); }; TimeAgo.prototype.startTimer = function() { var self; self = this; return this.interval = setInterval((function() { return self.refresh(); }), this.startInterval); }; TimeAgo.prototype.stopTimer = function() { return clearInterval(this.interval); }; TimeAgo.prototype.restartTimer = function() { this.stopTimer(); return this.startTimer(); }; TimeAgo.prototype.refresh = function() { this.updateTime(); return this.updateInterval(); }; TimeAgo.prototype.updateTime = function() { var self; self = this; return this.$element.findAndSelf(this.options.selector).each(function() { var timeAgoInWords; timeAgoInWords = self.timeAgoInWords($(this).attr(self.options.attr)); return $(this).html(timeAgoInWords); }); }; TimeAgo.prototype.updateInterval = function() { var filter, newestTime, newestTimeInMinutes, newestTimeSrc; if (this.$element.findAndSelf(this.options.selector).length > 0) { if (this.options.dir === "up") { filter = ":first"; } else if (this.options.dir === "down") { filter = ":last"; } newestTimeSrc = this.$element.findAndSelf(this.options.selector).filter(filter).attr(this.options.attr); newestTime = this.parse(newestTimeSrc); newestTimeInMinutes = this.getTimeDistanceInMinutes(newestTime); if (newestTimeInMinutes >= 0 && newestTimeInMinutes <= 44 && this.startInterval !== 60000) { this.startInterval = 60000; return this.restartTimer(); } else if (newestTimeInMinutes >= 45 && newestTimeInMinutes <= 89 && this.startInterval !== 60000 * 22) { this.startInterval = 60000 * 22; return this.restartTimer(); } else if (newestTimeInMinutes >= 90 && newestTimeInMinutes <= 2519 && this.startInterval !== 60000 * 30) { this.startInterval = 60000 * 30; return this.restartTimer(); } else if (newestTimeInMinutes >= 2520 && this.startInterval !== 60000 * 60 * 12) { this.startInterval = 60000 * 60 * 12; return this.restartTimer(); } } }; TimeAgo.prototype.timeAgoInWords = function(timeString) { var absolutTime; absolutTime = this.parse(timeString); return this.distanceOfTimeInWords(absolutTime) + (this.options.lang.suffix); }; TimeAgo.prototype.parse = function(iso8601) { var timeStr; timeStr = $.trim(iso8601); timeStr = timeStr.replace(//./d/d/d+/, ""); timeStr = timeStr.replace(/-/, "/").replace(/-/, "/"); timeStr = timeStr.replace(/T/, " ").replace(/Z/, " UTC"); timeStr = timeStr.replace(/([/+/-]/d/d)/:?(/d/d)/, " $1$2"); return new Date(timeStr); }; TimeAgo.prototype.getTimeDistanceInMinutes = function(absolutTime) { var timeDistance; timeDistance = new Date().getTime() - absolutTime.getTime(); return Math.round((Math.abs(timeDistance) / 1000) / 60); }; TimeAgo.prototype.distanceOfTimeInWords = function(absolutTime) { var dim; dim = this.getTimeDistanceInMinutes(absolutTime); if (dim === 0) { return "" + this.options.lang.prefixes.lt + " " + this.options.lang.units.minute; } else if (dim === 1) { return "1 " + this.options.lang.units.minute; } else if (dim >= 2 && dim <= 44) { return "" + dim + " " + this.options.lang.units.minutes; } else if (dim >= 45 && dim <= 89) { return "" + this.options.lang.prefixes.about + " 1 " + this.options.lang.units.hour; } else if (dim >= 90 && dim <= 1439) { return "" + this.options.lang.prefixes.about + " " + (Math.round(dim / 60)) + " " + this.options.lang.units.hours; } else if (dim >= 1440 && dim <= 2519) { return "1 " + this.options.lang.units.day; } else if (dim >= 2520 && dim <= 43199) { return "" + (Math.round(dim / 1440)) + " " + this.options.lang.units.days; } else if (dim >= 43200 && dim <= 86399) { return "" + this.options.lang.prefixes.about + " 1 " + this.options.lang.units.month; } else if (dim >= 86400 && dim <= 525599) { return "" + (Math.round(dim / 43200)) + " " + this.options.lang.units.months; } else if (dim >= 525600 && dim <= 655199) { return "" + this.options.lang.prefixes.about + " 1 " + this.options.lang.units.year; } else if (dim >= 655200 && dim <= 914399) { return "" + this.options.lang.prefixes.over + " 1 " + this.options.lang.units.year; } else if (dim >= 914400 && dim <= 1051199) { return "" + this.options.lang.prefixes.almost + " 2 " + this.options.lang.units.years; } else { return "" + this.options.lang.prefixes.about + " " + (Math.round(dim / 525600)) + " " + this.options.lang.units.years; } }; return TimeAgo; })(); $.fn.timeago = function(options) { if (options == null) options = {}; return this.each(function() { var $this, data; $this = $(this); data = $this.data("timeago"); if (!data) $this.data("timeago", new TimeAgo(this, options)); if (typeof options === 'string') return data[options](); }); }; $.fn.findAndSelf = function(selector) { return this.find(selector).add(this.filter(selector)); }; $.fn.timeago.Constructor = TimeAgo; $.fn.timeago.defaults = { selector: 'time.timeago', attr: 'datetime', dir: 'up', lang: { units: { second: "second", seconds: "seconds", minute: "minute", minutes: "minutes", hour: "hour", hours: "hours", day: "day", days: "days", month: "month", months: "months", year: "year", years: "years" }, prefixes: { lt: "less than a", about: "about", over: "over", almost: "almost" }, suffix: ' ago' } }; }).call(this);使用js插件：（改裝版（簡喲版）timeago.js）中文的
(function (factory) { if (typeof define === 'function' && define.amd) { // AMD. Register as an anonymous module. define(['jquery'], factory); } else { // Browser globals factory(jQuery); } }(function ($) { $.timeago = function(timestamp) { if (timestamp instanceof Date) { return inWords(timestamp); } else if (typeof timestamp === "string") { return inWords($.timeago.parse(timestamp)); } else if (typeof timestamp === "number") { return inWords(new Date(timestamp)); } else { return inWords($.timeago.datetime(timestamp)); } }; var $t = $.timeago; $.extend($.timeago, { settings: { refreshMillis: 60000, allowFuture: false, localeTitle: false, cutoff: 0, strings: { prefixAgo: null, prefixFromNow: null, suffixAgo: "前", suffixFromNow: "from now", seconds: "1分鐘", minute: "1分鐘", minutes: "%d分鐘", hour: "1小時", hours: "%d小時", day: "1天", days: "%d天", month: "1月", months: "%d月", year: "1年", years: "%d年", wordSeparator: "", numbers: [] } }, inWords: function(distanceMillis) { var $l = this.settings.strings; var prefix = $l.prefixAgo; var suffix = $l.suffixAgo; if (this.settings.allowFuture) { if (distanceMillis < 0) { prefix = $l.prefixFromNow; suffix = $l.suffixFromNow; } } var seconds = Math.abs(distanceMillis) / 1000; var minutes = seconds / 60; var hours = minutes / 60; var days = hours / 24; var years = days / 365; function substitute(stringOrFunction, number) { var string = $.isFunction(stringOrFunction) ? stringOrFunction(number, distanceMillis) : stringOrFunction; var value = ($l.numbers && $l.numbers[number]) || number; return string.replace(/%d/i, value); } var words = seconds < 45 && substitute($l.seconds, Math.round(seconds)) || seconds < 90 && substitute($l.minute, 1) || minutes < 45 && substitute($l.minutes, Math.round(minutes)) || minutes < 90 && substitute($l.hour, 1) || hours < 24 && substitute($l.hours, Math.round(hours)) || hours < 42 && substitute($l.day, 1) || days < 30 && substitute($l.days, Math.round(days)) || days < 45 && substitute($l.month, 1) || days < 365 && substitute($l.months, Math.round(days / 30)) || years < 1.5 && substitute($l.year, 1) || substitute($l.years, Math.round(years)); var separator = $l.wordSeparator || ""; if ($l.wordSeparator === undefined) { separator = " "; } return $.trim([prefix, words, suffix].join(separator)); }, parse: function(iso8601) { var s = $.trim(iso8601); s = s.replace(//./d+/,""); // remove milliseconds s = s.replace(/-/,"/").replace(/-/,"/"); s = s.replace(/T/," ").replace(/Z/," UTC"); s = s.replace(/([/+/-]/d/d)/:?(/d/d)/," $1$2"); // -04:00 -> -0400 return new Date(s); }, datetime: function(elem) { var iso8601 = $t.isTime(elem) ? $(elem).attr("datetime") : $(elem).attr("title"); return $t.parse(iso8601); }, isTime: function(elem) { // jQuery's `is()` doesn't play well with HTML5 in IE return $(elem).get(0).tagName.toLowerCase() === "time"; // $(elem).is("time"); } }); // functions that can be called via $(el).timeago('action') // init is default when no action is given // functions are called with context of a single element var functions = { init: function(){ var refresh_el = $.proxy(refresh, this); refresh_el(); var $s = $t.settings; if ($s.refreshMillis > 0) { setInterval(refresh_el, $s.refreshMillis); } }, update: function(time){ $(this).data('timeago', { datetime: $t.parse(time) }); refresh.apply(this); }, updateFromDOM: function(){ $(this).data('timeago', { datetime: $t.parse( $t.isTime(this) ? $(this).attr("datetime") : $(this).attr("title") ) }); refresh.apply(this); } }; $.fn.timeago = function(action, options) { var fn = action ? functions[action] : functions.init; if(!fn){ throw new Error("Unknown function name '"+ action +"' for timeago"); } // each over objects here and call the requested function this.each(function(){ fn.call(this, options); }); return this; }; function refresh() { var data = prepareData(this); var $s = $t.settings; if (!isNaN(data.datetime)) { if ( $s.cutoff == 0 || distance(data.datetime) < $s.cutoff) { $(this).text(inWords(data.datetime)); } } return this; } function prepareData(element) { element = $(element); if (!element.data("timeago")) { element.data("timeago", { datetime: $t.datetime(element) }); var text = $.trim(element.text()); if ($t.settings.localeTitle) { element.attr("title", element.data('timeago').datetime.toLocaleString()); } else if (text.length > 0 && !($t.isTime(element) && element.attr("title"))) { element.attr("title", text); } } return element.data("timeago"); } function inWords(date) { return $t.inWords(distance(date)); } function distance(date) { return (new Date().getTime() - date.getTime()); } // fix for IE6 suckage document.createElement("abbr"); document.createElement("time"); }));希望本文所述對大家的javascript程序設計有所幫助。
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