在新浪微博首頁看到每條微博後邊顯示的時間並不是標准的年-月-日格式，而是經過換算的時間差，如：發表於5分鐘前、發表於“2小時前”，比起標准的時間顯示格式，貌似更加直觀和人性化
要實現類似功能，用JS就可以，實現方法如下： 一、javascript函數實現: 實例1： 代碼如下: //JavaScript函數： var minute = 1000 * 60; var hour = minute * 60; var day = hour * 24; var halfamonth = day * 15; var month = day * 30; function getDateDiff(dateTimeStamp){ var now = new Date().getTime(); var diffValue = now - dateTimeStamp; if(diffValue < 0){ //若日期不符則彈出窗口告之 //alert("結束日期不能小於開始日期！"); } var monthC =diffValue/month; var weekC =diffValue/(7*day); var dayC =diffValue/day; var hourC =diffValue/hour; var minC =diffValue/minute; if(monthC>=1){ result="發表於" + parseInt(monthC) + "個月前"; } else if(weekC>=1){ result="發表於" + parseInt(weekC) + "周前"; } else if(dayC>=1){ result="發表於"+ parseInt(dayC) +"天前"; } else if(hourC>=1){ result="發表於"+ parseInt(hourC) +"個小時前"; } else if(minC>=1){ result="發表於"+ parseInt(minC) +"分鐘前"; }else result="剛剛發表"; return result; } 若你得到的時間格式不是時間戳，可以使用下面的JavaScript函數把字符串轉換為時間戳, 本函數的功能相當於JS版的strtotime： 代碼如下: //js函數代碼：字符串轉換為時間戳 function getDateTimeStamp(dateStr){ return Date.parse(dateStr.replace(/-/gi,"/")); } 實例2： 代碼如下: <script> function jsDateDiff(publishTime){ var d_minutes,d_hours,d_days; var timeNow = parseInt(new Date().getTime()/1000); var d; d = timeNow - publishTime; d_days = parseInt(d/86400); d_hours = parseInt(d/3600); d_minutes = parseInt(d/60); if(d_days>0 && d_days<4){ return d_days+"天前"; }else if(d_days<=0 && d_hours>0){ return d_hours+"小時前"; }else if(d_hours<=0 && d_minutes>0){ return d_minutes+"分鐘前"; }else{ var s = new Date(publishTime*1000); // s.getFullYear()+"年"; return (s.getMonth()+1)+"月"+s.getDate()+"日"; } } </script> 二、jquery插件實現 HTML代碼： 代碼如下: <span class="time timeago" title="<fmt:formatDate value="${comment.createAt}" pattern="yyyy-MM-dd HH:mm:ss"/>"></span> 調用代碼： 代碼如下: jQuery("span.timeago").timeago(); 插件源碼： 代碼如下: (function (factory) { if (typeof define === 'function' && define.amd) { // AMD. Register as an anonymous module. define(['jquery'], factory); } else { // Browser globals factory(jQuery); } }(function ($) { $.timeago = function(timestamp) { if (timestamp instanceof Date) { return inWords(timestamp); } else if (typeof timestamp === "string") { return inWords($.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(/([+-]dd):?(dd)/," $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"); }));