134 lines
4.1 KiB
JavaScript
134 lines
4.1 KiB
JavaScript
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/*
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* Javascript Humane Dates
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* Copyright (c) 2008 Dean Landolt (deanlandolt.com)
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* Re-write by Zach Leatherman (zachleat.com)
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*
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* Adopted from the John Resig's pretty.js
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* at http://ejohn.org/blog/javascript-pretty-date
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* and henrah's proposed modification
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* at http://ejohn.org/blog/javascript-pretty-date/#comment-297458
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*
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* Licensed under the MIT license.
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*/
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function humaneDate(date, compareTo){
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if(!date) {
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return;
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}
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var lang = {
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ago: 'ago',
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from: '',
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now: 'just now',
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minute: 'minute',
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minutes: 'minutes',
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hour: 'hour',
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hours: 'hours',
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day: 'day',
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days: 'days',
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week: 'week',
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weeks: 'weeks',
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month: 'month',
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months: 'months',
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year: 'year',
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years: 'years'
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},
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formats = [
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[60, lang.now],
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[3600, lang.minute, lang.minutes, 60], // 60 minutes, 1 minute
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[86400, lang.hour, lang.hours, 3600], // 24 hours, 1 hour
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[604800, lang.day, lang.days, 86400], // 7 days, 1 day
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[2628000, lang.week, lang.weeks, 604800], // ~1 month, 1 week
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[31536000, lang.month, lang.months, 2628000], // 1 year, ~1 month
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[Infinity, lang.year, lang.years, 31536000] // Infinity, 1 year
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],
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isString = typeof date == 'string',
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date = isString ?
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new Date(('' + date).replace(/-/g,"/").replace(/[TZ]/g," ")) :
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date,
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compareTo = compareTo || new Date,
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seconds = (compareTo - date +
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(compareTo.getTimezoneOffset() -
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// if we received a GMT time from a string, doesn't include time zone bias
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// if we got a date object, the time zone is built in, we need to remove it.
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(isString ? 0 : date.getTimezoneOffset())
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) * 60000
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) / 1000,
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token;
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if(seconds < 0) {
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seconds = Math.abs(seconds);
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token = lang.from ? ' ' + lang.from : '';
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} else {
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token = lang.ago ? ' ' + lang.ago : '';
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}
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/*
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* 0 seconds && < 60 seconds Now
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* 60 seconds 1 Minute
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* > 60 seconds && < 60 minutes X Minutes
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* 60 minutes 1 Hour
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* > 60 minutes && < 24 hours X Hours
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* 24 hours 1 Day
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* > 24 hours && < 7 days X Days
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* 7 days 1 Week
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* > 7 days && < ~ 1 Month X Weeks
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* ~ 1 Month 1 Month
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* > ~ 1 Month && < 1 Year X Months
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* 1 Year 1 Year
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* > 1 Year X Years
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*
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* Single units are +10%. 1 Year shows first at 1 Year + 10%
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*/
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function normalize(val, single)
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{
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var margin = 0.1;
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if(val >= single && val <= single * (1+margin)) {
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return single;
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}
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return val;
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}
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for(var i = 0, format = formats[0]; formats[i]; format = formats[++i]) {
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if(seconds < format[0]) {
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if(i === 0) {
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// Now
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return format[1];
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}
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var val = Math.ceil(normalize(seconds, format[3]) / (format[3]));
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return val +
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' ' +
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(val != 1 ? format[2] : format[1]) +
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(i > 0 ? token : '');
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}
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}
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};
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if(typeof jQuery != 'undefined') {
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jQuery.fn.humaneDates = function(options)
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{
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var settings = jQuery.extend({
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'lowercase': false
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}, options);
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return this.each(function()
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{
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var $t = jQuery(this),
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date = $t.attr('datetime') || $t.attr('title');
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date = humaneDate(date);
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if(date && settings['lowercase']) {
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date = date.toLowerCase();
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}
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if(date && $t.html() != date) {
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// don't modify the dom if we don't have to
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$t.html(date);
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}
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});
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};
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}
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