📄 ch18-254.txt
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<HTML>
<HEAD>
<TITLE>技巧篇--基本信息</TITLE>
</HEAD>
<BODY bgcolor="#fef4d2" onload=startclock()>
<br><br>
<center>
<font color="ffaafa"><h2>技巧篇--基本信息</h2></font>
<hr width=300>
<!-- 案例代码1开始 -->
<script language=JavaScript>
var timerID = null;
var timerRunning = false;
function startclock() {
stopclock();
showtime();
}
function stopclock (){
if(timerRunning)
clearTimeout(timerID);
timerRunning = false;
}
function showtime () {
var now = new Date();
var hours = now.getHours();
var minutes = now.getMinutes();
var seconds = now.getSeconds()
var timeValue = "" + ((hours >12) ? hours -12 :hours)
if (timeValue == "0") timeValue = 12;
timeValue += ((minutes < 10) ? ":0" : ":") + minutes
timeValue += ((seconds < 10) ? ":0" : ":") + seconds
timeValue += (hours >= 12) ? " Pm" : " Am"
document.clock.face.value = timeValue;
timerID = setTimeout("showtime()",1000);
timerRunning = true;
}
</script>
<!-- 案例代码1结束 -->
<!-- 案例代码2开始 -->
<!-- [Step1]: 在此能够修改整个表格的宽度和背景色 -->
<table border=0 width="300" bgcolor="#99FF00" >
<tr><td COLSPAN="2" BGCOLOR="#CCCC99">
<!-- [Step2]: 这里可以更改表格中的提示信息 -->
<center><font face="Arial,Helvetica" size=3>本地基本信息</font></center>
</td></tr>
<!-- [Step3]: 在此能够设置单个表格的宽度和背景色 -->
<tr><td width="200" bgcolor="#996600">
<font face="Helvetica" color="#FFFFFF" size=-1>系统当前时间：</font>
</td>
<td WIDTH="200" BGCOLOR="#FF9933"><script language=JavaScript>
var months=new Array(13);
months[1]="Jan";
months[2]="Feb";
months[3]="Mar";
months[4]="Apr";
months[5]="May";
months[6]="Jun";
months[7]="Jul";
months[8]="Aug";
months[9]="Sep";
months[10]="Oct";
months[11]="Nov";
months[12]="Dec";
var time=new Date();
document.write(""+ months[time.getMonth() + 1] + " ");
document.write(time.getDate() + ", " + time.getYear());
</script>
<!-- [Step4]: 这里能够设置文本框的列长度 -->
<form name="clock"><input type="text" name="face" size=10 value=""></form>
</td></tr>
<tr><td BGCOLOR="#3399CC"><font face="Arial,Helvetica" color="#FFFFFF" size=-1>您已经到此：</font></td>
<td BGCOLOR="#993399"><script language=Javascript>
function getCookieVal (offset) {
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1) endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}
function GetCookie (name) {
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i < clen) {
var j = i + alen;
if (document.cookie.substring(i, j) == arg) return getCookieVal (j);
i = document.cookie.indexOf(" ", i) + 1;
if (i == 0) break; }
return null;
}
function SetCookie (name, value) {
var argv = SetCookie.arguments;
var argc = SetCookie.arguments.length;
var expires = (argc > 2) ? argv[2] : null;
var path = (argc > 3) ? argv[3] : null;
var domain = (argc > 4) ? argv[4] : null;
var secure = (argc > 5) ? argv[5] : false;
document.cookie = name + "=" + escape (value) + ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + ((path == null) ? "" : ("; path=" + path)) + ((domain == null) ? "" : ("; domain=" + domain)) + ((secure == true) ? "; secure" : "");
}
function DeleteCookie(name) {
var exp = new Date();
FixCookieDate (exp);
exp.setTime (exp.getTime() - 1);
var cval = GetCookie (name);
if (cval != null) document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}
var expdate = new Date();
var num_visits;
expdate.setTime(expdate.getTime() + (5*24*60*60*1000));
if (!(num_visits = GetCookie("num_visits")))
num_visits = 0;
num_visits++;
SetCookie("num_visits",num_visits,expdate);
document.write(num_visits+" 次。");
</script></td></tr>
<tr><td BGCOLOR="#666699"><font face="Helvetica" color="#FFFFFF" size=-1>浏览器类型：</font></td>
<td BGCOLOR="#CC0099"><script language=JavaScript>
var version = 0;
if (navigator.userAgent.indexOf('MSIE 5.5') != -1) document.write("IE 5.5");
else if (navigator.userAgent.indexOf('MSIE 5') != -1) document.write("IE 5.0");
else if (navigator.userAgent.indexOf('MSIE 4') != -1) document.write("IE 4.0");
else document.write("You are not running IE")
</script></td></tr>
<tr><td BGCOLOR="#99CC99"><font face="Arial,Helvetica" color="#FFFFFF" size=-1>是否支持Cookie：</font></td>
<td BGCOLOR="#33CC99"><script language=JavaScript>
var oneDay= 1*24*3600*1000;
var expDate = new Date();
expDate.setTime (expDate.getTime() + oneDay);
var cookieExpires = expDate.toGMTString();
document.cookie="verifyCookie=test; expires="+cookieExpires
if (document.cookie.length>0) document.write("Yes.");
else {
document.write("No.")
document.write(document.cookie.substring(0,document.cookie.length)+"<BR><BR>");}
</script></td></tr>
</table>
<!-- 案例代码2结束 -->
</BODY>
</HTML>
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