//--------
// 检查当前浏览器是否为netscape
//--------
function isnetscape(){
app=navigator.appname.substring(0,1);
if (app=='n') return true;
else {return false;}
}
//--------
// 保存当前form表单（仅适用于ie浏览器）
//--------
function formsavecheck(filename){
if(isnetscape()){alert(sorry, these function is not supported)}
else document.execcommand('saveas',null,filename)
}
//--------
// 校验数据的合法性
//--------
function isvalidreg( chars){
var re=/|\[|\]|\{|\}|『|』|※|○|●|◎|§|△|▲|☆|★|◇|◆|□|▼|㊣|﹋|⊕|⊙|〒|ㄅ|ㄆ|
ㄇ|ㄈ|ㄉ|ㄊ|ㄋ|ㄌ|ㄍ|ㄎ|ㄏ|ㄐ|ㄑ|ㄒ|ㄓ|ㄔ|ㄕ|ㄖ|ㄗ|ㄘ|ㄙ|ㄚ|ㄛ|ㄜ|ㄝ|ㄞ|ㄟ|ㄢ|ㄣ|ㄤ|ㄥ|ㄦ|ㄧ|ㄨ|ㄩ
|■|▄|▆|\*|@|#|\^|\\/;
if (re.test( chars) == true) {
return false;
}else{
return true;
}
}
//--------
// 检查数据的长度是否合法
//--------
function isvalidlength(chars, len) {
if (chars.length > len) {
return false;
}
return true;
}
//--------
// 校验url的合法性
//--------
function isvalidurl( chars ) {
//var re=/^([hh][tt]{2}[pp]:\/\/|[hh][tt]{2}[pp][ss]:\/\/)((((\w+(-*\w*)+)\.)+((com)|
(net)|(edu)|(gov)|(org)|(biz)|(aero)|(coop)|(info)|(name)|(pro)|(museum))(\.([a-z]{2}))?)|((\w+(-
*\w*)+)\.(cn)))$/;
var re=/^([hh][tt]{2}[pp]:\/\/|[hh][tt]{2}[pp][ss]:\/\/)(\s+\.\s+)$/;
//var re=/^([hh][tt]{2}[pp]:\/\/|[hh][tt]{2}[pp][ss]:\/\/)(((((\w+(-*\w*)+)\.)+((com)|
(net)|(edu)|(gov)|(org)|(biz)|(aero)|(coop)|(info)|(name)|(pro)|(museum)|(cn)|(tv)|(hk))(\.([a-z]
{2}))?)|((\w+(-*\w*)+)\.(cn)))((\/|\?)\s*)*)$/;
if (!isnull(chars)) {
chars = jstrim(chars);
if (chars.match(re) == null)
return false;
else
return true;
}
return false;
}
//--------
// 校验数字的合法性
//--------
function isvaliddecimal( chars ) {
var re=/^\d*\.?\d{1,2}$/;
if (chars.match(re) == null)
return false;
else
return true;
}
//--------
// 校验数字的合法性
//--------
function isnumber( chars ) {
var re=/^\d*$/;
if (chars.match(re) == null)
return false;
else
return true;
}
//--------
// 校验邮编的合法性
//--------
function isvalidpost( chars ) {
var re=/^\d{6}$/;
if (chars.match(re) == null)
return false;
else
return true;
}
//--------
// 去掉数据的首尾空字符
//--------
function jstrim(value){
return value.replace(/(^\s*)|(\s*$)/g,);
}
//--------
// 校验数据是否为空（当数据为空字符时也为null）
//--------
function isnull( chars ) {
if (chars == null)
return true;
if (jstrim(chars).length==0)
return true;
return false;
}
//--------
// 校验email的合法性
//--------
function checkemail (fieldname, bmsg)
{
var emailstr = fieldname.value;
var emailpat=/^(.+)@(.+)$/
var specialchars=\\(\\)@,;:\\\\\\\\\.\\[\\]
var validchars=\[^\\s + specialchars + \]
var quoteduser=(\[^\]*\)
var ipdomainpat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
var atom=validchars + '+'
var word=( + atom + | + quoteduser + )
var userpat=new regexp(^ + word + (\\. + word + )*$)
var domainpat=new regexp(^ + atom + (\\. + atom +)*$)
var matcharray=emailstr.match(emailpat)
if (matcharray==null)
{
if (bmsg) alert(email address seems incorrect (check @ and .'s))
return false
}
var user=matcharray[1]
var domain=matcharray[2]
// see if user is valid
if (user.match(userpat)==null)
{
if (bmsg) alert(the email address seems incorrect.)
// fieldname.focus();
return false
}
/* if the e-mail address is at an ip address (as opposed to a symbolic
host name) make sure the ip address is valid. */
var iparray=domain.match(ipdomainpat)
if (iparray!=null)
{
for (var i=1;i {
if (iparray[i]>255)
{
if (bmsg) alert(destination ip address is invalid!)
return false
}
}
return true
}
// domain is symbolic name
var domainarray=domain.match(domainpat)
if (domainarray==null)
{
if (bmsg) alert(the domain name doesn't seem to be valid.)
return false
}
/* domain name seems valid, but now make sure that it ends in a
three-letter word (like com, edu, gov) or a two-letter word,
representing country (uk, nl), and that there's a hostname preceding
the domain or country. */
var atompat=new regexp(atom,g)
var domarr=domain.match(atompat)
var len=domarr.length
if (domarr[domarr.length-1].length3)
{
// the address must end in a two letter or three letter word.
if (bmsg) alert(the address must end in a three-letter domain, or two letter country.)
return false
}
// make sure there's a host name preceding the domain.
if (len {
if (bmsg) alert(this address is missing a hostname!)
return false
}
// if we've got this far, everything's valid!
return true;
}
//--------
// 判断是否为闰年
//--------
function isleapyear(year){
if (year % 4 != 0)
return false;
if (year % 400 == 0)
return true;
if (year % 100 == 0)
return false;
return true;
}
//--------
// 校验日期的合法性
//--------
function validatedate(day,month,year)
{
if ((day return false;
if ((month>=1)&&(month if (month == 2) {
if (isleapyear(year)) {
if (day return true;
} else {
if (day return true;
else
return false;
}
} else if ((month==4)||(month==6)||(month==9)||(month==11)) {
if (day return true;
else
return false;
} else {
if (day return true;
else
return false;
}
}
return false;
}
//--------
// 判断数据是否包含都是single byte
//--------
function issinglebytestring(str)
{
var rc = true;
var j = 0, i = 0;
for (i=0; i j = str.charcodeat(i);
if (j>=128) {
rc = false;
break;
}
}
return rc;
}
var submitevent = true;
function checkdoublesubmit(){
return submitevent;
}
//--------
// 弹出窗口
// 参数：url-弹出窗口显示url的内容
// w-弹出窗口的宽度
// h-弹出窗口的高度
// iscenter-控制弹出窗口是否在屏幕中央显示，值为true/false
// isresizable-控制弹出窗口是否可以改变大小，值为true/false
// isscroll-控制弹出窗口是否有滚动条，值为true/false
//--------
function popupwindow(url,w,h,iscenter,isresizable,isscroll) {
if (isnull(url)) return;
var scrleft = 0;
var scrtop = 0;
var scroll = no;
var resize = no;
if (iscenter) {
scrleft = (screen.width-w)/2;
scrtop = (screen.height-h)/2;
}
if (isresizable) resize=yes;
if (isscroll) scroll = yes;
window.open(url, 'popupwindow',
'height='+h+',width='+w+',top='+scrtop+',left='+scrleft+',toolbar=no,menubar=no,scrollbars='+scrol
l+',resizable='+resize+',location=no,status=no');
}
//--------
// 弹出窗口
// 参数：url-弹出窗口显示url的内容
// w-弹出窗口的宽度
// h-弹出窗口的高度
// iscenter-控制弹出窗口是否在屏幕中央显示，值为true/false
// isresizable-控制弹出窗口是否可以改变大小，值为true/false
// ismodal-控制弹出窗口是否为模式或非模式对话框，值为ture/false
//--------
function popupmodalwindow(url,w,h,iscenter,isresizable,ismodal) {
if (isnull(url)) return;
var scrleft = 0;
var scrtop = 0;
var resize = no;
var cnt = no;
if (iscenter) {
cnt=yes;
scrleft = (screen.width-w)/2;
scrtop = (screen.height-h)/2;
}
if (isresizable) resize=yes;
if (ismodal)
window.showmodaldialog(url, 'popupwindow',
'dialogwidth:'+w+'px;dialogheight:'+h+'px;dialogleft:'+scrleft+'px;dialogtop:'+scrtop+'px;center:'
+cnt+';help:no;resizable:'+resize+';status:no');
else
window.showmodelessdialog(url, 'popupwindow',
'dialogwidth:'+w+'px;dialogheight:'+h+'px;dialogleft:'+scrleft+'px;dialogtop:'+scrtop+'px;center:'
+cnt+';help:no;resizable:'+resize+';status:no');
}
//--------
// 弹出窗口
// 参数：url-弹出窗口显示url的内容
// w-弹出窗口的宽度
// h-弹出窗口的高度
// iscenter-控制弹出窗口是否在屏幕中央显示，值为true/false
// isresizable-控制弹出窗口是否可以改变大小，值为true/false
// isscroll-控制弹出窗口是否有滚动条，值为true/false
//--------
function openwindowcenter(urll,w,h){
var top=(window.screen.height-h)/2;
var left=(window.screen.width-w)/2;
var param='toolbar=no,menubar=no,scrollbars=yes,resizable=no,location=no, status=no,top=';
param=param+top;
param=param+',left=';
param=param+left;
param=param+',height='+h;
param=param+',width='+w;
var w=window.open (urll,,param)
if(w!=null && typeof(w)!=undefined){
w.focus();
}
}