Created
March 28, 2013 09:17
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jquery.countdown.coffee : a minimal jquery plugin to launch a countdown with a simple API
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| $ = jQuery | |
| defaults = | |
| kickoff: "March 28, 2017 18:30:00" | |
| onStart: (kickoff, el) -> | |
| console and console.log "Countdown will start to #{ kickoff }" | |
| onChange: (counter,el) -> | |
| if not el | |
| console.log "Countdown state : #{ counter.days } days, #{ counter.hours } hours, #{ counter.minutes } minutes, #{ counter.seconds } seconds left." | |
| else | |
| el.text "#{ counter.days } days, #{ counter.hours } hours, #{ counter.minutes } minutes, #{ counter.seconds } seconds left." | |
| onFinish: () -> | |
| alert "Yay ! It's a final countdown !" | |
| class Countdown | |
| # Constructor | |
| constructor: (@el, settings = {}) -> | |
| @settings = $.extend {}, defaults, settings | |
| @counter = | |
| seconds: 0 | |
| minutes: 0 | |
| hours: 0 | |
| days: 0 | |
| kickoff = @el.data('kickoff') or @settings.kickoff | |
| @kickoff = new Date(kickoff) | |
| @start.call(@) | |
| @el | |
| # Counter | |
| count: () -> | |
| now = new Date() | |
| diff = new Date @kickoff - now | |
| left = Math.floor(diff.valueOf() / 1000) | |
| @counter.seconds = Math.floor(left / 1) % 60 | |
| @counter.minutes = Math.floor(left / 60) % 60 | |
| @counter.hours = Math.floor(left / 3600) % 24 | |
| @counter.days = Math.floor(left / 86400) % 86400 | |
| if diff < 0 | |
| @settings.onFinish() | |
| return | |
| setTimeout () => | |
| @count.call(@) | |
| , 1000 | |
| @settings.onChange @counter, @el | |
| # Start the countdown | |
| start: () -> | |
| if not @kickoff | |
| throw new Error 'Cannot start countdown without a kickoff date' | |
| @count() | |
| @settings.onStart @kickoff, @el | |
| (($) -> | |
| $.fn.countdown = (settings) -> | |
| new Countdown(@, settings) | |
| )(jQuery) |
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| <!doctype html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>It's a final countdown</title> | |
| </head> | |
| <body> | |
| <div id="timer" data-kickoff="March 27, 2013 18:50:50"></div> | |
| <script src="jquery.js"></script> | |
| <script src="jquery.countdown.js"></script> | |
| <script> | |
| $(function(){ | |
| $('#timer').countdown() | |
| }) | |
| </script> | |
| </body> | |
| </html> |
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