📄 实例69.全球时间表.html
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<body OnLoad="timeCheck(timezone, 0)">
<script language="JavaScript">
<!--
var timerrun = false;
var timezone = "格林尼治标准时间";
var adjust = 0;
function timeCheck(tzone, diff) {
if (timerrun) {
clearTimeout(updatetime);
timerrun = false; }
gmtOffset=eval(diff+adjust);
timezone = tzone;
checkDateTime();
}
function checkDateTime () {
var today = new Date();
var year = today.getYear() + 00;
var month = today.getMonth()+1;
var date = today.getDate();
var day = today.getDay();
var hour = today.getHours();
var minute = today.getMinutes();
var second = today.getSeconds();
var lastSat = date - (day+1);
while (lastSat < 32) lastSat+=7;
if (lastSat > 31) lastSat+=-7;
var firstSat = date - (day+1);
while (firstSat > 0) firstSat+=-7;
if (firstSat < 1) firstSat+=7;
if ((((month == 4) && (date >= firstSat)) || month > 4) &&
(month < 11 || ((month == 10) && day <= lastSat))) adjust += 60;
yourOffset = (new Date()).getTimezoneOffset();
yourOffset = yourOffset + adjust;
if ((((month == 4) && (date > 20)) || month > 4) && (month < 11 || ((month == 10) && day < 30))) adjust -= 60;
ourDifference = eval(gmtOffset - yourOffset);
var half = eval(ourDifference % 60);
ourDifference = Math.round(ourDifference / 60);
hour = eval(hour - ourDifference);
var m = new Array("","1","2","3","4","5","6","7","8","9","10","11","12");
var leap = eval(year % 4);
if ((half == -30) || (half == 30)) minute += 30;
if (minute > 59) minute -= 60, hour++;
if (minute < 0) minute += 60, hour--;
if (hour > 23) hour -= 24, date += 1;
if (((month == 4) || (month == 6) || (month == 9) || (month == 11)) && (date==31)) date = 1, month ++;
if (((month == 2) && (date > 28)) && (leap != 0)) date = 1, month ++;
if ((month == 2) && (date > 29)) date = 1, month++;
if (hour < 0) hour += 24, date --;
if ((date == 32) && (month == 12)) month = m[1], date = 1, year++;
if (date == 32) date = 1, month++;
if ((date < 1) && (month == 1)) month= m[12], date = 31, year--;
if (date < 1) date = 31, month --;
if (((month == 4) || (month == 6) || (month== 9) || (month == 11)) && (date == 31)) date = 30;
if ((month == 2) && (date > 28)) date = 29;
if (((month == 2) && (date > 28)) && (leap != 0)) date=28;
for (i=1; i<13; i++) {
if (month == i) {
month = m[i]; break;
}
}
var dateTime = hour;
dateTime = " " + dateTime;
dateTime += ((minute < 10) ? ":0" : ":") + minute;
dateTime += ((second < 10) ? ":0" : ":") + second;
dateTime += (hour >= 12) ? "下午, " : "上午, ";
dateTime += year + "年" + month + "月" + date + "日" ;
document.clock.zonetime.value = dateTime;
document.clock.zonename.value = timezone;
updatetime=setTimeout("checkDateTime()", 900);
timerrun = true;
}
//-->
</script>
<br>
<form name=clock>
当前的时间：<input type=text name=zonetime size=28>
<br>
<br>
当前的地区：<input type=text name=zonename size=21>
<br>
<table border=0 cellpadding=5>
<tr>
<td colspan=4 align=center><img src="world.gif"></td>
</tr>
<tr>
<td align=center>
<input type=button value="阿拉斯加" onClick="timeCheck(this.value, +520)" name="button">
</td>
<td align=center>
<input type=button value="夏威夷" onClick="timeCheck(this.value, +600)" name="button">
</td>
<td align=center>
<input type=button value="波哥大" onClick="timeCheck(this.value, +300)" name="button">
</td>
<td align=center>
<input type=button value="墨西哥" onClick="timeCheck(this.value, +360)" name="button">
</td>
</tr>
<tr>
<td align=center>
<input type=button value="莫斯科" onClick="timeCheck(this.value, -180)" name="button">
</td>
<td align=center>
<input type=button value="以色列" onClick="timeCheck(this.value, -120)" name="button">
</td>
<td align=center>
<input type=button value="罗马" onClick="timeCheck(this.value, -60)" name="button">
</td>
<td align=center>
<input type=button value="伦敦" onClick="timeCheck(this.value, +0)" name="button">
</td>
</tr>
<tr>
<td align=center>
<input type=button value="新德里" onClick="timeCheck(this.value, -330)" name="button">
</td>
<td align=center>
<input type=button value="曼谷" onClick="timeCheck(this.value, -420)" name="button">
</td>
<td align=center>
<input type=button value="北京" onClick="timeCheck(this.value, -480)" name="button">
</td>
<td align=center>
<input type=button value="东京" onClick="timeCheck(this.value, -540)" name="button">
</td>
</tr>
</table>
</form>
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