简单的web页面计时器

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web前台

Web IE Firefox C#C++

这是页面内容

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>无法屏蔽的网页右下角浮动窗口</title>
<meta http-equiv="content-type" content="text/html;charset=gb2312">
<SCRIPT src= "time.js"> </SCRIPT>
<style type="text/css">
#msg_win{border:1px solid #00ff00;width:180px;position:absolute;right:0;font-size:12px;font-family:Arial;margin:0px;display:none;overflow:hidden;z-index:99;}
#msg_win .icos{position:absolute;top:2px;*top:0px;right:2px;z-index:9;}
.icos a{float:left;color:#fff;margin:1px;text-align:center;font-weight:bold;width:14px;height:22px;line-height:22px;padding:1px;text-decoration:none;font-family:webdings;}
.icos a:hover{color:#fff;}
#msg_title{background:#336699;border-bottom:1px solid #fff;color:#ffcc00;height:25px;line-height:22px;font-weight:600;}
#msg_content{margin-right:0;width:180px;height:104px;overflow:hidden;background:#336699;}
.style_1{padding-left:6px;font-size:13px;font-family:'微软雅黑';color:#fff;height:20px;}
.style_2{font-size:12px;font-family:'微软雅黑';height:22px;text-align:center;background:#333333;color:#00ff00;border:#00ff00 solid 1px;}
.style_3{font-size:12px;font-family:'微软雅黑';height:22px;width:46px;}
</style>
</head>
<body onLoad="startclock(100);">
<p style="height:1000px;">这里是页面具体内容</p>
<div id="msg_win" style="display:block;top:490px;visibility:visible;opacity:1;">
<div class="icos"><a id="msg_min" title="最小化" href="javascript:void 0">_</a></div>
<div id="msg_title" style=""><font style="padding-left:5px;line-height:25px;vertical-align:super;">考试计时器</font></div>
<div id="msg_content">
	<form action="" name="clock">
		<table>
			<tr><td class="style_1">开始时间：</td><td><input class="style_2" name="start" size=13 disabled="disabled"></td></tr>
			<tr><td class="style_1">结束时间：</td><td><input class="style_2" name="end" size=13 disabled="disabled"></td></tr>
			<tr><td class="style_1">剩余时间：</td><td><input class="style_2" name="timer" size=13 disabled="disabled"></td></tr>
		</table>
		<div align="center" style="border-top:1px solid #fff;height:24px;">
			<input class="style_3" type="button" value="按钮">
			<input class="style_3" type="button" value="按钮">
			<input class="style_3" type="button" value="按钮">
		</div>
	</form>
</div>
</div>
</body>
</html>

以下是time.js内容

var Message={
	set: function() {//最小化与恢复状态切换
		var set=this.minbtn.status == 1?[0,1,'block',this.char[0],'最小化']:[1,0,'none',this.char[1],'恢复'];
		this.minbtn.status=set[0];
		this.win.style.borderBottomWidth=set[1];
		this.content.style.display =set[2];
		this.minbtn.innerHTML =set[3]
		this.minbtn.title = set[4];
		this.win.style.top = this.getY().top;
	},
	setOpacity: function(x) {//设置透明度
		var v = x >= 100 ? '': 'Alpha(opacity=' + x + ')';
		this.win.style.visibility = x<=0?'hidden':'visible';//IE有绝对或相对定位内容不随父透明度变化的bug
		this.win.style.filter = v;
		this.win.style.opacity = x / 100;
	},
	show: function() {//渐显
		clearInterval(this.timer2);
		var me = this,fx = this.fx(0, 100, 0.1),t = 0;
		this.timer2 = setInterval(function() {
		t = fx();
		me.setOpacity(t[0]);
		if (t[1] == 0) {clearInterval(me.timer2) }
		},10);
		},
		fx: function(a, b, c) {//缓冲计算
		var cMath = Math[(a - b) > 0 ? "floor": "ceil"],c = c || 0.1;
		return function() {return [a += cMath((b - a) * c), a - b]}
	},
	getY: function() {//计算移动坐标
		var d = document,b = document.body, e = document.documentElement;
		var s = Math.max(b.scrollTop, e.scrollTop);
		var h = /BackCompat/i.test(document.compatMode)?b.clientHeight:e.clientHeight;
		var h2 = this.win.offsetHeight;
		return {foot: s + h + h2 + 2+'px',top: s + h - h2 - 2+'px'}
	},
	moveTo: function(y) {//移动动画
		clearInterval(this.timer);
		var me = this,a = parseInt(this.win.style.top)||0;
		var fx = this.fx(a, parseInt(y));
		var t = 0 ;
		this.timer = setInterval(function() {
		t = fx();
		me.win.style.top = t[0]+'px';
		if (t[1] == 0) {
		clearInterval(me.timer);
		me.bind();
		}
		},10);
	},
	bind:function (){//绑定窗口滚动条与大小变化事件
		var me=this,st,rt;
		window.onscroll = function() {
		clearTimeout(st);
		clearTimeout(me.timer2);
		me.setOpacity(0);
		st = setTimeout(function() {
		me.win.style.top = me.getY().top;
		me.show();
		},600);
		};
		window.onresize = function (){
		clearTimeout(rt);
		rt = setTimeout(function() {me.win.style.top = me.getY().top},100);
		}
	},
	init: function() {//创建HTML
		function $(id) {return document.getElementById(id)};
		this.win=$('msg_win');
		var set={minbtn: 'msg_min',title: 'msg_title',content: 'msg_content'};
		for (var Id in set) {this[Id] = $(set[Id])};
		var me = this;
		this.minbtn.onclick = function() {me.set();this.blur()};
		this.char=navigator.userAgent.toLowerCase().indexOf('firefox')+1?['_','::','×']:['0','2','r'];//FF不支持webdings字体
		this.minbtn.innerHTML=this.char[0];
		setTimeout(function() {//初始化最先位置
		me.win.style.display = 'block';
		me.win.style.top = me.getY().foot;
		me.moveTo(me.getY().top);
		},0);
		return this;
	}
};

var timerID = null; 
var timerRunning = false;
var time = 0;
function stopclock(){ 
	if(timerRunning) 
		clearTimeout(timerID); 
	timerRunning = false;
} 
function startclock(total){ 
	Message.init();
	stopclock(); 
	showtime(total);
	time = total * 60;
	showsLast(); 
} 
function showtime(total){
	var now = new Date(); 
	var hours = now.getHours(); 
	var minutes = now.getMinutes(); 
	var seconds = now.getSeconds();
	var timeValue = "";
	timeValue += ((hours < 10) ? "0" : "") + hours; 
	timeValue += ((minutes < 10) ? ":0" : ":") + minutes; 
	timeValue += ((seconds < 10) ? ":0" : ":") + seconds;
	document.clock.start.value = timeValue;
	hours += Math.floor(total/60);
	minutes += Math.floor(total%60);
	if(minutes >60){
		hours += 1;
		minutes -=60;
	}
	timeValue = "";
	timeValue += ((hours < 10) ? "0" : "") + hours; 
	timeValue += ((minutes < 10) ? ":0" : ":") + minutes; 
	timeValue += ((seconds < 10) ? ":0" : ":") + seconds;
	document.clock.end.value = timeValue; 
}
function showsLast() {   
	var hours = Math.floor(time/3600); 
	var minutes = Math.floor(time/60-60); 
	var seconds = Math.floor(time%60);        
	timeValue = "";
	timeValue += ((hours < 10) ? "0" : "") + hours; 
	timeValue += ((minutes < 10) ? ":0" : ":") + minutes; 
	timeValue += ((seconds < 10) ? ":0" : ":") + seconds;
	document.clock.timer.value = timeValue;
	time = time - 1;   
	timerID = setTimeout("showsLast()",1000);
	timerRunning = true;     
}

只要将上述两个文件的内容放在同一根目录下即可。

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