使用jQuery和CSS3实现一个数字时钟

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我们经常会在网站中看见一个时钟的效果。今天向大家分享一个使用jQuery和CSS3实现一个数字时钟教程

 
代码:
 
<div id="clock" class="light">
    <div class="display">
        <div class="weekdays"></div>
        <div class="ampm"></div>
        <div class="alarm"></div>
        <div class="digits"></div>
    </div>
</div>
<div class="zero">
    <span class="d1"></span>
    <span class="d2"></span>
    <span class="d3"></span>
    <span class="d4"></span>
    <span class="d5"></span>
    <span class="d6"></span>
    <span class="d7"></span>
</div>
 
CSS
 
/* 0 */
 
#clock .digits div.zero .d1,
#clock .digits div.zero .d3,
#clock .digits div.zero .d4,
#clock .digits div.zero .d5,
#clock .digits div.zero .d6,
#clock .digits div.zero .d7{
    opacity:1;
}
 
jquery code
 
$(function(){
 
    // Cache some selectors
 
    var clock = $('#clock'),
        alarm = clock.find('.alarm'),
        ampm = clock.find('.ampm');
 
    // Map digits to their names (this will be an array)
    var digit_to_name = 'zero one two three four five six seven eight nine'.split(' ');
 
    // This object will hold the digit elements
    var digits = {};
 
    // Positions for the hours, minutes, and seconds
    var positions = [
        'h1', 'h2', ':', 'm1', 'm2', ':', 's1', 's2'
    ];
 
    // Generate the digits with the needed markup,
    // and add them to the clock
 
    var digit_holder = clock.find('.digits');
 
    $.each(positions, function(){
 
        if(this == ':'){
            digit_holder.append('<div class="dots">');
        }
        else{
 
            var pos = $('<div>');
 
            for(var i=1; i<8; i++){
                pos.append('<span class="d' + i + '">');
            }
 
            // Set the digits as key:value pairs in the digits object
            digits[this] = pos;
 
            // Add the digit elements to the page
            digit_holder.append(pos);
        }
 
    });
 
    // Add the weekday names
 
    var weekday_names = 'MON TUE WED THU FRI SAT SUN'.split(' '),
        weekday_holder = clock.find('.weekdays');
 
    $.each(weekday_names, function(){
        weekday_holder.append('<span>' + this + '</span>');
    });
 
    var weekdays = clock.find('.weekdays span');
 
    // Run a timer every second and update the clock
 
    (function update_time(){
 
        // Use moment.js to output the current time as a string
        // hh is for the hours in 12-hour format,
        // mm - minutes, ss-seconds (all with leading zeroes),
        // d is for day of week and A is for AM/PM
 
        var now = moment().format("hhmmssdA");
 
        digits.h1.attr('class', digit_to_name[now[0]]);
        digits.h2.attr('class', digit_to_name[now[1]]);
        digits.m1.attr('class', digit_to_name[now[2]]);
        digits.m2.attr('class', digit_to_name[now[3]]);
        digits.s1.attr('class', digit_to_name[now[4]]);
        digits.s2.attr('class', digit_to_name[now[5]]);
 
        // The library returns Sunday as the first day of the week.
        // Stupid, I know. Lets shift all the days one position down,
        // and make Sunday last
 
        var dow = now[6];
        dow--;
 
        // Sunday!
        if(dow < 0){
            // Make it last
            dow = 6;
        }
 
        // Mark the active day of the week
        weekdays.removeClass('active').eq(dow).addClass('active');
 
        // Set the am/pm text:
        ampm.text(now[7]+now[8]);
 
        // Schedule this function to be run again in 1 sec
        setTimeout(update_time, 1000);
 
    })();
 
    // Switch the theme
 
    $('a.button').click(function(){
        clock.toggleClass('light dark');
    });
 
});
posted @ 2013-06-18 12:06  -j神-----  阅读(790)  评论(0编辑  收藏  举报