text: function formatTime(time) {
  	if (typeof time !== 'number' || time < 0) {
  		return time
  	}
  
  	var hour = parseInt(time / 3600)
  	time = time % 3600
  	var minute = parseInt(time / 60)
  	time = time % 60
  	var second = time
  
  	return ([hour, minute, second]).map(function(n) {
  		n = n.toString()
  		return n[1] ? n : '0' + n
  	}).join(':')
  }
  
  function formatLocation(longitude, latitude) {
  	if (typeof longitude === 'string' && typeof latitude === 'string') {
  		longitude = parseFloat(longitude)
  		latitude = parseFloat(latitude)
  	}
  
  	longitude = longitude.toFixed(2)
  	latitude = latitude.toFixed(2)
  
  	return {
  		longitude: longitude.toString().split('.'),
  		latitude: latitude.toString().split('.')
  	}
  }
  var dateUtils = {
  	UNITS: {
  		'年': 31557600000,
  		'月': 2629800000,
  		'天': 86400000,
  		'小时': 3600000,
  		'分钟': 60000,
  		'秒': 1000
  	},
  	humanize: function(milliseconds) {
  		var humanize = '';
  		for (var key in this.UNITS) {
  			if (milliseconds >= this.UNITS[key]) {
  				humanize = Math.floor(milliseconds / this.UNITS[key]) + key + '前';
  				break;
  			}
  		}
  		return humanize || '刚刚';
  	},
  	format: function(dateStr) {
  		// var date = this.parse(dateStr)
  		// var diff = Date.now() - date.getTime();
  		var diff = Date.now() - parseInt(dateStr);
  		if (diff < this.UNITS['天']) {
  			return this.humanize(diff);
  		}
  		var _format = function(number) {
  			return (number < 10 ? ('0' + number) : number);
  		};
  		return date.getFullYear() + '/' + _format(date.getMonth() + 1) + '/' + _format(date.getDay()) + '-' +
  			_format(date.getHours()) + ':' + _format(date.getMinutes());
  	},
  	format_2: function(dateStr) {
  		var date = this.parse(dateStr)
  		var diff = Date.now() - date.getTime();
  		if (diff < this.UNITS['天']) {
  			return this.humanize(diff);
  		}
  		var _format = function(number) {
  			return (number < 10 ? ('0' + number) : number);
  		};
  		return date.getFullYear() + '/' + _format(date.getMonth() + 1) + '/' + _format(date.getDay()) + '-' +
  			_format(date.getHours()) + ':' + _format(date.getMinutes());
  	},
  	parse: function(str) { //将"yyyy-mm-dd HH:MM:ss"格式的字符串，转化为一个Date对象
  		var a = str.split(/[^0-9]/);
  		return new Date(a[0], a[1] - 1, a[2], a[3], a[4], a[5]);
  	}
  };
  
  module.exports = {
  	formatTime: formatTime,
  	formatLocation: formatLocation,
  	dateUtils: dateUtils
  }
  