最近更新时间

autoTimeString.js

function zPad (n) {
	var l = 2;
	var z = new Array(l+1).join('0');
	return (z+n).slice(-l);
}

function autoTimeString(s) {
	s = '' + s.replace(/^\s+/,'').replace(/\s+$/, '');
	if ( s.length === 10 ) {
		s = s + '000';
	}
	s = +s;
	var d = new Date(s);
	var now = new Date();
	var Y = d.getFullYear();
	var M = zPad(d.getMonth() + 1);
	var D = zPad(d.getDate());
	var HH = zPad(d.getHours());
	var MM = zPad(d.getMinutes());
	var hours, secondes;

	secondes = (now - d) / 1000;
	hours = Math.ceil(secondes / (60*60) );
	if ( hours < 1 ) {
		return Math.ceil(secondes/60) + ' 分钟前';
	}
	if ( hours < 24 ) {
		return hours + ' 小时前';
	}
	if ( hours > 24 && hours < 48 ) {
		return '昨天 ' + [HH, MM].join(':');
	}
	// 跨年
	if ( d.getFullYear() !== now.getFullYear() ) {
		return [Y, M, D].join('-') + ' ' + [HH, MM].join(':');
	}
	return [M, D].join('-') + ' ' + [HH, MM].join(':');
}