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timeago filter for angularjs
.filter("timeago", function () {
//time: the time
//local: compared to what time? default: now
//raw: wheter you want in a format of "5 minutes ago", or "5 minutes"
return function (time, local, raw) {
if (!time) return "never";
if (!local) {
(local = Date.now())
}
if (angular.isDate(time)) {
time = time.getTime();
} else if (typeof time === "string") {
time = new Date(time).getTime();
}
if (angular.isDate(local)) {
local = local.getTime();
}else if (typeof local === "string") {
local = new Date(local).getTime();
}
if (typeof time !== 'number' || typeof local !== 'number') {
return;
}
var
offset = Math.abs((local - time) / 1000),
span = [],
MINUTE = 60,
HOUR = 3600,
DAY = 86400,
WEEK = 604800,
MONTH = 2629744,
YEAR = 31556926,
DECADE = 315569260;
if (offset <= MINUTE) span = [ '', raw ? 'now' : 'less than a minute' ];
else if (offset < (MINUTE * 60)) span = [ Math.round(Math.abs(offset / MINUTE)), 'min' ];
else if (offset < (HOUR * 24)) span = [ Math.round(Math.abs(offset / HOUR)), 'hr' ];
else if (offset < (DAY * 7)) span = [ Math.round(Math.abs(offset / DAY)), 'day' ];
else if (offset < (WEEK * 52)) span = [ Math.round(Math.abs(offset / WEEK)), 'week' ];
else if (offset < (YEAR * 10)) span = [ Math.round(Math.abs(offset / YEAR)), 'year' ];
else if (offset < (DECADE * 100)) span = [ Math.round(Math.abs(offset / DECADE)), 'decade' ];
else span = [ '', 'a long time' ];
span[1] += (span[0] === 0 || span[0] > 1) ? 's' : '';
span = span.join(' ');
if (raw === true) {
return span;
}
return (time <= local) ? span + ' ago' : 'in ' + span;
}
})
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