$(selector).countdown({ 
labels: ['Years', 'Months', 'Weeks', 'Days', 'Hours', 'Minutes', 'Seconds'], 
// The expanded texts for the counters 
labels1: ['Year', 'Month', 'Week', 'Day', 'Hour', 'Minute', 'Second'], 
// The display texts for the counters if only one 
compactLabels: ['y', 'm', 'w', 'd'],
// The compact texts for the counters 
whichLabels: null, 
// Function to determine which labels to use 
timeSeparator: ':',
// Separator for time periods 
isRTL: false, 
// True for right-to-left languages, false for left-to-right 
 
until: null, 
// new Date(year, mth - 1, day, hr, min, sec) - date/time to count down to 
// or numeric for seconds offset, or string for unit offset(s): 
// 'Y' years, 'O' months, 'W' weeks, 'D' days, 'H' hours, 'M' minutes, 'S' seconds 
// 计时器结束时间
since: null, 
// new Date(year, mth - 1, day, hr, min, sec) - date/time to count up from 
// or numeric for seconds offset, or string for unit offset(s): 
// 'Y' years, 'O' months, 'W' weeks, 'D' days, 'H' hours, 'M' minutes, 'S' seconds 
// 计时开始时间
timezone: null, 
// The timezone (hours or minutes from GMT) for the target times, 
// or null for client local 
// 时区 当值为空指的就是本机当地时间
serverSync: null,
// A function to retrieve the current server time for synchronisation
// 同步服务器时间的函数
format: 'dHMS', 
// Format for display - upper case for always, lower case only if non-zero, 
// 'Y' years, 'O' months, 'W' weeks, 'D' days, 'H' hours, 'M' minutes, 'S' seconds 
// 格式化日期 年(y)-月(o)-周(w)-日(d)-时(h)-分(m)-秒(s)
layout: '', 
// Build your own layout for the countdown 
compact: false,
// True to display in a compact format, false for an expanded one 
// 紧凑模式显示时间 如：0y 8m 0w 0d 18:10:51
significant: 0, 
// The number of periods with values to show, zero for all
// 仅显示那些有意义的时间 
description: '', 
// The description displayed for the countdown 
// 定义倒计时的语言 调用时候得附加官网的语言包
expiryUrl: null, 
// A URL to load upon expiry, replacing the current page
// 当计时到期自动跳转到新的页面并替换当前页 
alwaysExpire: false, 
// True to trigger onExpiry even if never counted down 
// 无论是否计时到期都执行回调函数
onExpiry: null, 
// Callback when the countdown expires - 
// receives no parameters and 'this' is the containing division 
// 倒计时到期执行回调函数
onTick: null, 
// Callback when the countdown is updated - 
// receives int[7] being the breakdown by period (based on format) 
// and 'this' is the containing division 
tickInterval: 1 
// Interval (seconds) between onTick callbacks 
// 间隔多少秒执行一次onTick
}); 
$.countdown.setDefaults(settings) // Set global defaults 
$.countdown.UTCDate(tz, time) // Standardise a date to UTC format 
$.countdown.UTCDate(tz, year, month, day, hours, mins, secs, ms) 
$.countdown.periodsToSeconds(periods) // Convert periods into equivalent seconds  
$(selector).countdown('change', settings) // Change instance settings 
$(selector).countdown('change', name, value) 
$(selector).countdown('settings', name) // Retrieve instance settings 
$(selector).countdown('destroy') // Remove countdown functionality 
$(selector).countdown('pause') // Stop the countdown but don't clear it 
$(selector).countdown('lap') // Stop the display but continue the countdown 
$(selector).countdown('resume') // Restart a paused or lap countdown 
$(selector).countdown('getTimes') // Retrieve the current time periods