s10_08.htm

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HTM

50 行

<HTML>

<HEAD>
<META name="vs_defaultClientScript" content="JavaScript">
<META http-equiv="Content-Language" content="zh-cn">
<META name="vs_targetSchema" content="HTML 4.0">
<META name="GENERATOR" content="Microsoft FrontPage 5.0">
<META name="ProgId" content="FrontPage.Editor.Document">
<TITLE>可打开、关闭的数字时钟</TITLE>
<SCRIPT language="javascript">
<!--
var TM;//保存定时器句柄
function Time_Set()
{ 
	TM = window.setTimeout( "Time_Set()", 1000 ); 
	var today = new Date(); 
	digit_clock.innerText = today.toLocaleString();
}

function btnControl_onclick()
{
	if(btnControl.value=="打开时钟")
	{
		btnControl.value="关闭时钟";
		Time_Set();//打开定时器
	}
	else
	{
		window.clearTimeout( TM );//关闭定时器 
		btnControl.value="打开时钟";
		digit_clock.innerText="";
	}
}

//-->
</SCRIPT>
</HEAD>

<BODY>

<P>
<INPUT type="button" id="btnControl" value="打开时钟" onclick="return btnControl_onclick()">
</P>
<P id="digit_clock" style="font-size: 36pt; color: #800080; font-weight: bold">
</P>

</BODY>

</HTML>

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s10_08.htm

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