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javascript 常用代码大全(十三)

2008-10-14 16:51 288 查看
// 17

//parse the search string,then return a object.
//object info:
//--property:
//----result:a array contained a group of name/value item.the item is nested class.
//--method:
//----getNamedItem(name):find item by name.if not exists,return null;
//----appendItem(name,value):apppend an item into result tail;
//----removetItem(name):remove item which contained in result and named that name.
//----toString():override Object.toString();return a regular query string.
function parseQueryString(search){
var object=new Object();
object.getNamedItem=getNamedItem;
object.appendItem=appendItem;
object.removeItem=removeItem;
object.toString=toString;
object.result=new Array();
function parseItem(itemStr){
var arStr=itemStr.split("=");
var obj=new Object();
obj.name=arStr[0];
obj.value=arStr[1];
obj.toString=toString;
function toString(){
return obj.name+"="+obj.value;
}
return obj;
}
function appendItem(name,value){
var obj=parseItem(name+"="+value);
object.result[object.result.length]=obj;
}
function removeItem(name){
var j;
for(j=0;j<object.result.length;j++){
if(object.result[j].name==name){
object.result.replice(j,1);
}
}
}
function getNamedItem(name){
var j;
for(j=0;j<object.result.length;j++){
if(object.result[j].name==name){
return object.result[j];
}
}
return null;
}
function toString(){
var k;
var str="";
for(k=0;k<object.result.length;k++){
str+=object.result[k].toString()+"&";
}
return str.substring(0,str.length-1);
}

var items=search.split("&");
var i;
for(i=0;i<items.length;i++){
object.result[i]=parseItem(items[i]);
}
return object;
}

关闭窗体[无须修改][共1步]
====1、将以下代码加入HEML的<body></body>之间:
<script language="JavaScript">
function shutwin(){
window.close();
return;}
</script>
<a href="javascript:shutwin();">关闭本窗口</a>

检测系统信息
<script language="JavaScript" type="text/javascript">
<!--
var newline = "/r/r"
var now = new Date()
var millinow=now.getTime()/1000
var hours = now.getHours()
var minutes = now.getMinutes()
var seconds = now.getSeconds()
var yourLocation=""
now.setHours(now.getHours()+1)
var min=60*now.getUTCHours()+now.getUTCMinutes() + now.getUTCSeconds()/60;
var internetTime=(min/1.44)
internetTime="Internet Time: @"+Math.floor(internetTime)
var clock = "It’s exactly "+hours+":"+minutes+":"+seconds+" hours"
var browser = "You are using " + navigator.appName +" "+navigator.appVersion
yourLocation="You are probably living in "+yourLocation
var winwidth= window.screen.width
var winheight= window.screen.height
var screenresolution= "Screen resolution: "+window.screen.width+" x "+window.screen.height
var lastdoc = "You came from: "+document.referrer
var expDays = 30;
var exp = new Date();
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));
function Who(info){
var VisitorName = GetCookie(’VisitorName’)
if (VisitorName == null) {
VisitorName = "stranger";
SetCookie (’VisitorName’, VisitorName, exp);
}
return VisitorName;
}
function When(info){
// When
var rightNow = new Date()
var WWHTime = 0;
WWHTime = GetCookie(’WWhenH’)
WWHTime = WWHTime * 1
var lastHereFormatting = new Date(WWHTime); // Date-i-fy that number
var intLastVisit = (lastHereFormatting.getYear() * 10000)+(lastHereFormatting.getMonth() * 100) +
lastHereFormatting.getDate()
var lastHereInDateFormat = "" + lastHereFormatting; // Gotta use substring functions
var dayOfWeek = lastHereInDateFormat.substring(0,3)
var dateMonth = lastHereInDateFormat.substring(4,11)
var timeOfDay = lastHereInDateFormat.substring(11,16)
var year = lastHereInDateFormat.substring(23,25)
var WWHText = dayOfWeek + ", " + dateMonth + " at " + timeOfDay // display
SetCookie ("WWhenH", rightNow.getTime(), exp)
return WWHText;
}
function Count(info){
var psj=0;
// How many times
var WWHCount = GetCookie(’WWHCount’)
if (WWHCount == null) {
WWHCount = 0;
}
else{
WWHCount++;
}
SetCookie (’WWHCount’, WWHCount, exp);
return WWHCount;
}
function set(){
VisitorName = prompt("Who are you?");
SetCookie (’VisitorName’, VisitorName, exp);
SetCookie (’WWHCount’, 0, exp);
SetCookie (’WWhenH’, 0, exp);
}
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();
exp.setTime (exp.getTime() - 1);
// This cookie is history
var cval = GetCookie (name);
document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}
var countvisits="You’ve been here " + Count() + " time(s). Last time was " + When() +"."
if (navigator.javaEnabled()) {
var javaenabled="Your browser is able to run java-applets";
}
else {
var javaenabled="Your browser is not able to run java-applets";
}
function showAlert() {
var later = new Date()
var millilater=later.getTime()/1000
var loadTime=(Math.floor((millilater-millinow)*100))/100
var loadTimeResult= "It took you "+loadTime+" seconds to load this page"
var babiesborn=Math.ceil(loadTime*4.18)
var babiesbornresult="While this page was loading "+babiesborn+" babies have been born"
if (babiesborn==1){babiesbornresult="While this page was loading "+babiesborn+" baby has been born"}
alert
(newline+newline+browser+newline+clock+newline+loadTimeResult+
newline+internetTime+newline+screenresolution+
newline+lastdoc+newline+countvisits+newline+javaenabled+newline+babiesbornresult+newline+newline)
}
// --></script>
<body onLoad="showAlert()">

密码保护:
将以下代码加入HEML的<body></body>之间:
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