jQuery定时器

下面介绍一个用jQuery实现JS中的定时器方法,在jQuery中的jQuery Timers插件中已封装JS的setTimeout 和 setInterval 方法.
在jQuery Timers中提供了3个函数式

1. everyTime(时间间隔, [计时器名称], 函式名称, [次数限制], [等待函式程序完成])
2. oneTime(时间间隔, [计时器名称], 呼叫的函式)
3. stopTime ([计时器名称], [函式名称])

everyTime函数式

everyTime函数式相当于js中的循环定时器
1:每间隔一秒钟循环执行a()

function a(){
  alert(1);
}
$('body').everyTime('1s',a);

2:简写版

$('body').everyTime('1s',function(){
  alert(1);
});

3:每隔一秒执行,并给计时器命名为A

$('body').everyTime('1s','A',function(){
  alert(1);
});

4:每隔二十秒执行,最多5次,并给计时器命名为A

$('body').everyTime('20s','A',function(){
  alert(1);
},5);

oneTime函数式

1:10s后执行函数

$('body').oneTime('1das',function(){
  alert(1);
});

2:100s后执行函数,并给计时器命名为A

$('body').oneTime('100s','A',function(){
  alert(1);
});

stopTime函数式

1:停止所有的在$('body')上计时器

$('body').stopTime ();

2:停止$('body')上名称为A的计时器

$('body').stopTime ('A');

3:停止$('body')上所有呼叫a()的计时器

$('body').stopTime (a);

jQuery Timers插件代码

p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 16.0px Consolas; color: #a5b2b9}p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 16.0px Consolas; min-height: 19.0px}p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font: 16.0px Consolas; color: #596972}p.p4 {margin: 0.0px 0.0px 0.0px 0.0px; font: 16.0px Consolas; color: #b58a00}p.p5 {margin: 0.0px 0.0px 0.0px 0.0px; font: 16.0px Consolas; color: #2eafa9}p.p6 {margin: 0.0px 0.0px 0.0px 0.0px; font: 16.0px Consolas; color: #da6c34}p.p7 {margin: 0.0px 0.0px 0.0px 0.0px; font: 16.0px Consolas; color: #ad5cff}p.p8 {margin: 0.0px 0.0px 0.0px 0.0px; font: 16.0px Consolas; color: #97a700}p.p9 {margin: 0.0px 0.0px 0.0px 0.0px; font: 16.0px Consolas; color: #3c7400}p.p10 {margin: 0.0px 0.0px 0.0px 0.0px; font: 16.0px Consolas; color: #596972; min-height: 19.0px}p.p11 {margin: 0.0px 0.0px 0.0px 0.0px; font: 16.0px Consolas; color: #6b82d9}span.s1 {color: #596972}span.s2 {color: #6b82d9}span.s3 {color: #97a700}span.s4 {color: #b58a00}span.s5 {color: #ad5cff}span.s6 {color: #3c7400}span.s7 {color: #000000}span.s8 {color: #2eafa9}span.s9 {color: #d8a100}span.Apple-tab-span {white-space:pre}

/**
 * jQuery.timers - Timer abstractions for jQuery
 * Written by Blair Mitchelmore (blair DOT mitchelmore AT gmail DOT com)
 * Licensed under the WTFPL (http://sam.zoy.org/wtfpl/).
 * Date: 2009/02/08
 *
 * @author Blair Mitchelmore
 * @version 1.1.2
 *
 **/

jQuery.fn.extend({
 everyTime: function(interval, label, fn, times, belay) {
  return this.each(function() {
   jQuery.timer.add(this, interval, label, fn, times, belay);
  });
 },
 oneTime: function(interval, label, fn) {
  return this.each(function() {
   jQuery.timer.add(this, interval, label, fn, 1);
  });
 },
 stopTime: function(label, fn) {
  return this.each(function() {
   jQuery.timer.remove(this, label, fn);
  });
 }
});

jQuery.event.special

jQuery.extend({
 timer: {
  global: [],
  guid: 1,
  dataKey: "jQuery.timer",
  regex: /^([0-9]+(?:\.[0-9]*)?)\s*(.*s)?$/,
  powers: {
   // Yeah this is major overkill...
   'ms': 1,
   'cs': 10,
   'ds': 100,
   's': 1000,
   'das': 10000,
   'hs': 100000,
   'ks': 1000000
  },
  timeParse: function(value) {
   if (value == undefined || value == null)
    return null;
   var result = this.regex.exec(jQuery.trim(value.toString()));
   if (result[2]) {
    var num = parseFloat(result[1]);
    var mult = this.powers[result[2]] || 1;
    return num * mult;
   } else {
    return value;
   }
  },
  add: function(element, interval, label, fn, times, belay) {
   var counter = 0;
   
   if (jQuery.isFunction(label)) {
    if (!times) 
     times = fn;
    fn = label;
    label = interval;
   }
   
   interval = jQuery.timer.timeParse(interval);

   if (typeof interval != 'number' || isNaN(interval) || interval <= 0)
    return;

   if (times && times.constructor != Number) {
    belay = !!times;
    times = 0;
   }
   
   times = times || 0;
   belay = belay || false;
   
   var timers = jQuery.data(element, this.dataKey) || jQuery.data(element, this.dataKey, {});
   
   if (!timers[label])
    timers[label] = {};
   
   fn.timerID = fn.timerID || this.guid++;
   
   var handler = function() {
    if (belay && this.inProgress) 
     return;
    this.inProgress = true;
    if ((++counter > times && times !== 0) || fn.call(element, counter) === false)
     jQuery.timer.remove(element, label, fn);
    this.inProgress = false;
   };
   
   handler.timerID = fn.timerID;
   
   if (!timers[label][fn.timerID])
    timers[label][fn.timerID] = window.setInterval(handler,interval);
   
   this.global.push( element );
   
  },
  remove: function(element, label, fn) {
   var timers = jQuery.data(element, this.dataKey), ret;
   
   if ( timers ) {
    
    if (!label) {
     for ( label in timers )
      this.remove(element, label, fn);
    } else if ( timers[label] ) {
     if ( fn ) {
      if ( fn.timerID ) {
       window.clearInterval(timers[label][fn.timerID]);
       delete timers[label][fn.timerID];
      }
     } else {
      for ( var fn in timers[label] ) {
       window.clearInterval(timers[label][fn]);
       delete timers[label][fn];
      }
     }
     
     for ( ret in timers[label] ) break;
     if ( !ret ) {
      ret = null;
      delete timers[label];
     }
    }
    
    for ( ret in timers ) break;
    if ( !ret ) 
     jQuery.removeData(element, this.dataKey);
   }
  }
 }
});

jQuery(window).bind("unload", function() {
 jQuery.each(jQuery.timer.global, function(index, item) {
  jQuery.timer.remove(item);
 });
});

注:自定义时间单位,可以定制自己想要的单位.

powers: {   
// Yeah this is major overkill...  
  'ms': 1,   
  'cs': 10, 
  'ds': 100,   
  's': 1000,   
  'das': 10000,   
  'hs': 100000,  
  'ks': 1000000
}

下载地址:http://download.csdn.net/detail/qq_32427791/9370474