再来几个函数，getCookie(),getQuery(),DateDiff(),DateAdd(),b2s()，原+改



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function getCookie(mainKey,subKey) {
var reg = new RegExp("(^| )"+mainKey+"=([^;]*)(;|$)");
var arr = document.cookie.match(reg);
if (arguments.length == 2) {
if (arr!=null)
return key(subKey,arr[2]);
else
return null;
} else if (arguments.length == 1) {
if (arr!=null)
return unescape(arr[2]);
else
return null;
}

function key(subKey,findWith) {
var arr,reg = new RegExp("(^| |&)"+subKey+"=([^&]*)(&|$)");
var findWith = findWith?findWith:document.cookie;
if (arr = findWith.match(reg))
return unescape(arr[2]);
else
return null;
}
}

function getQuery(name) {
var reg = new RegExp("(^|&)"+name+"=([^&]*)(&|$)");
var r = location.search.substr(1).match(reg)
if (r!=null) return unescape(r[2]);
}

function DateAdd(strInterval, NumDay, dtDate) {
var dtTmp = new Date(dtDate);
if (isNaN(dtTmp)) dtTmp = new Date();
switch (strInterval) {
case "s":return new Date(Date.parse(dtTmp) + (1000 * NumDay));
case "n":return new Date(Date.parse(dtTmp) + (60000 * NumDay));
case "h":return new Date(Date.parse(dtTmp) + (3600000 * NumDay));
case "d":return new Date(Date.parse(dtTmp) + (86400000 * NumDay));
case "w":return new Date(Date.parse(dtTmp) + ((86400000 * 7) * NumDay));
case "m":return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + NumDay, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());
case "y":return new Date((dtTmp.getFullYear() + NumDay), dtTmp.getMonth(), dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());
}
}
// DateDiff("m","2002/12/1 00:00:00","2004/12/1 00:00:00")
function DateDiff(strInterval, dtStart, dtEnd) {
var dtStart = new Date(dtStart);
if (isNaN(dtStart)) dtStart = new Date();
var dtEnd = new Date(dtEnd);
if (isNaN(dtEnd)) dtEnd = new Date();
switch (strInterval) {
case "s":return parseInt((dtEnd - dtStart) / 1000);
case "n":return parseInt((dtEnd - dtStart) / 60000);
case "h":return parseInt((dtEnd - dtStart) / 3600000);
case "d":return parseInt((dtEnd - dtStart) / 86400000);
case "w":return parseInt((dtEnd - dtStart) / (86400000 * 7));
case "m":return (dtEnd.getMonth()+1)+((dtEnd.getFullYear()-dtStart.getFullYear())*12) - (dtStart.getMonth()+1);
case "y":return dtEnd.getFullYear() - dtStart.getFullYear();
}
}
// b2s("11新浪网!@#程序员_+}{:><")
function b2s(strng) {
var Matches = strng.match(/[x21-x7e]/g);
for (var i=0;istrng = strng.replace(Matches[i],String.fromCharCode(Matches[i].charCodeAt (0)+65248))
}
return strng;
}

来几个，IE5下原型扩展



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/*Number Object*/
if(!Number.prototype.toFixed) {
Number.prototype.toFixed = function(n) {
with(Math) return round(Number(this)*pow(10,n))/pow(10,n)
}
}
/*Array Object*/
if (!Array.prototype.pop) {
Array.prototype.pop = function() {
var lastElement = this[this.length-1];
this.length = Math.max(this.length-1,0);
return lastElement;
}
}
if (!Array.prototype.push) {
Array.prototype.push = function() {
for(var i=0;ithis[this.length]=arguments[i];
}
return this.length;
}
}
if (!Array.prototype.shift) {
Array.prototype.shift = function() {
var firstElement = this[0];
this.reverse();
this.pop();
this.reverse();
return firstElement;
}
}
if (!Array.prototype.splice) {
Array.prototype.splice = function() {
var start = arguments[0];
var deleteCount = start+arguments[1];
var deleteItem = this.slice(start,deleteCount);
var beforeItem = this.slice(0,start);
var afterItem = this.slice(deleteCount);
this.length=beforeItem.length;
var i;
for (i=2;ifor (i=0;ireturn deleteItem;
}
}
if (!Array.prototype.unshift) {
Array.prototype.unshift = function() {
var arr = new Array();
for (var i=0;iarr = arr.concat(this);
this.length = 0;
for (i=0;i}
}[@more@]