这里汇总了js实现时间显示几天前、几小时前或者几分钟前的常见方法。分享给大家供大家参考。具体如下：
方法一：
个人做法是保存时间戳，然后在前端用jq插件做转换，比如 smart-time-ago
方法二：
（通过freemarker模板）如果用freemarker模板可以这样写，别的模板类推
根据自己的意愿修改条件和输出，把你的datetime传进去即可
<#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}个月前
<#t><#elseif ct gte 86400*2><#--n天前-->${(ct/86400)?int}天前
<#t><#elseif ct gte 86400><#--1天前-->昨天
<#t><#elseif ct gte 3600><#--n小时前-->${(ct/3600)?int}小时前
<#t><#elseif ct gte 60><#--n分钟前-->${(ct/60)?int}分钟前
<#t><#elseif ct gt 0><#--n秒前-->${ct?int}秒前
<#t><#else>刚刚
方法三：
找到一个专门的插件PrettyTime
public static void main(String[] args) {
PrettyTime p = new PrettyTime();
System.out.println(p.format(DateUtils.addDays(new Date(), 2)));
}
方法四：
自定义Java方法：
private final static long minute = 60 * 1000;// 1分钟
private final static long hour = 60 * minute;// 1小时
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 + "个月前";
}
if (diff > day) {
r = (diff / day);
return r + "天前";
}
if (diff > hour) {
r = (diff / hour);
return r + "个小时前";
}
if (diff > minute) {
r = (diff / minute);
return r + "分钟前";
}
return "刚刚";
}
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;
$.fn.timeago.defaults = {
selector: 'time.timeago',
attr: 'datetime',
dir: 'up',
lang: {
units: {
second: "second",
seconds: "seconds",
minute: "minute",
minutes: "minutes",
hour: "hour",
hours: "hours",
day: "day",
days: "days",
month: "month",
months: "months",
year: "year",
years: "years"
},
prefixes: {
lt: "less than a",
about: "about",
over: "over",
almost: "almost"
},
suffix: ' ago'
}
};
}).call(this);
使用js插件：（改装版（简哟版）timeago.js）中文的
(function (factory) {
if (typeof define === 'function' && define.amd) {
// AMD. Register as an anonymous module.
define(['jquery'], factory);
} else {
// Browser globals
factory(jQuery);
}
}(function ($) {
$.timeago = function(timestamp) {
if (timestamp instanceof Date) {
return inWords(timestamp);
} else if (typeof timestamp === "string") {
return inWords($.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分钟",
minute: "1分钟",
minutes: "%d分钟",
hour: "1小时",
hours: "%d小时",
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");
}));
希望本文所述对大家的javascript程序设计有所帮助。