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  • flex倒计时

    在web开发中,倒计时随处可见,这里主要是用到了timer类,比较简单,直接上例子。

    <?xml version="1.0" encoding="utf-8"?>
    <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
                   xmlns:s="library://ns.adobe.com/flex/spark" 
                   xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" contentCreationComplete="init()">
        
        <fx:Script>
            <![CDATA[
                import flash.events.TimerEvent;
                import flash.events.Event;
                import flash.utils.Timer;
                
                private var timer:Timer;
                private var h_num:int;
                private var m_num:int;
                private var s_num:int;
                private function init():void
                {
                    //设置时间
                    h_num = 0;
                    m_num = 2;
                    s_num = 30;
                    
                    time2_txt.text = time_txt.text = "00:02:30";
                    //启动倒计时
                    timer = new Timer(1000, 0);
                    timer.addEventListener(TimerEvent.TIMER, onTimer);
                    timer.start();
                }
                
                private function onTimer(event:TimerEvent):void
                {
                    s_num = s_num - 1;
                    
                    if ((s_num == -1) && (m_num > 0))
                    {
                        m_num = m_num - 1;
                        s_num = 59;
                    }
                    if ((m_num == 0) && (h_num > 0))
                    {
                        h_num = h_num -1;
                        m_num = 59;
                        s_num = 59;
                    }
                    if (s_num < 0)            //时间停止
                    {
                        s_num = 0;
                        timer.stop();
                    }
                    var hh:String;
                    var mm:String;
                    var ss:String;
                    hh = (h_num < 10) ? "0" + h_num.toString() : h_num.toString();
                    mm =  (m_num < 10) ? "0" + m_num.toString() : m_num.toString();
                    ss = (s_num < 10) ? "0" + s_num.toString() : s_num.toString();
                    time2_txt.text = time_txt.text = hh + ":" + mm + ":" + ss;
                }
            ]]>
        </fx:Script>
        
        <fx:Declarations>
            <!-- 将非可视元素(例如服务、值对象)放在此处 -->
        </fx:Declarations>
        <mx:Text id="time2_txt" width="180" height="40" fontSize="38" fontWeight="bold" x="42" y="31"/>
        <mx:Text id="time_txt" width="180" height="40" fontSize="38" color="0xFF0000" fontWeight="bold" x="40" y="29"/>
    </s:Application>
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  • 原文地址:https://www.cnblogs.com/hnhcc39/p/2595698.html
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