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增大字体- ·上一篇文章：检测最近两个星期天的日期（当然也可以是其它星期）
- ·下一篇文章：给出两个日期，算出他们相差多少（精确到秒哟）
可以选择12小时、24小时制的时钟显示方式
要完成此效果需要两个步骤
第一步：把如下代码加入到<body>区域中
<script language="JavaScript">
function showMilitaryTime()
{
if (document.form.showMilitary[0].checked)
{
return true;
}
return false;
}
function showTheHours(theHour)
{
if (showMilitaryTime() || (theHour > 0 && theHour < 13))
{
if (theHour == "0") theHour = 12;
return (theHour);
}
if (theHour == 0)
{
return (12);
}
return (theHour-12);
}
function showZeroFilled(inValue)
{
if (inValue > 9)
{
return "" + inValue;
}
return "0" + inValue;
}
function showAmPm()
{
if (showMilitaryTime())
{
return ("");
}
if (now.getHours() < 12)
{
return (" am");
}
return (" pm");
}
function showTheTime()
{
now = new Date
document.form.showTime.value = showTheHours(now.getHours()) +
":" + showZeroFilled(now.getMinutes()) + ":" +
showZeroFilled(now.getSeconds()) + showAmPm()
setTimeout("showTheTime()",1000)
}
</script>
<FORM name=form><INPUT name=showTime size=11>
<P><INPUT CHECKED name=showMilitary type=radio>24小时制<BR><INPUT
name=showMilitary type=radio Unchecked>12小时制</FORM>
第二步：把“onload=showTheTime()”加在<body>标记里
例如：<body onload=showTheTime()>
