javaScript常用函数
//打开弹出窗口function winOpen (strURL,strName,width,height)
{
theWindow = window.open (strURL,strName,"width="+width+" height="+height+" scrollbars=yes left="+(1024-width)/2+" top="+(768-height)/2);
if (theWindow.opener == null) theWindow.opener = window;
if (window.focus) theWindow.focus();
}
//验证邮件
function verifyEmailAddress(strEmail){
var myReg = /^+@(+\.)+{2,3}$/;
return myReg.test(strEmail);
}
/*****************************************************************
**** 判断是否为日期数据(lhm) 例子:itIsDate("2009-10-7" , "-") *****
*****************************************************************/
function itIsDate(DateString , Dilimeter)
{
if (DateString==null) return false;
if (Dilimeter=='' || Dilimeter==null)
Dilimeter = '-';
var tempy='';
var tempm='';
var tempd='';
var tempArray;
if (DateString.length<8 && DateString.length>10)
return false;
tempArray = DateString.split(Dilimeter);
if (tempArray.length!=3)
return false;
if (tempArray.length==4)
{
tempy = tempArray;
tempd = tempArray;
}
else
{
tempy = tempArray;
tempd = tempArray;
}
tempm = tempArray;
var tDateString = tempy + '/'+tempm + '/'+tempd+' 8:0:0';//加八小时是因为我们处于东八区
var tempDate = new Date(tDateString);
if (isNaN(tempDate))
return false;
if (((tempDate.getUTCFullYear()).toString()==tempy) && (tempDate.getMonth()==parseInt(tempm)-1) && (tempDate.getDate()==parseInt(tempd)))
{
return true;
}
else
{
return false;
}
}
/*****************************************************************
**** 求字符串的字节长度 (lhm) *****
*****************************************************************/
function byteLength(paraString)
{
var strValue =new String(paraString);
var strLength = strValue.length;
var numLength =0;
for (globle_i =0 ; globle_i<strLength;globle_i++){
var ASCIIValue =strValue.charCodeAt(globle_i);
if ( ASCIIValue > 0 && ASCIIValue < 127 )
numLength = numLength + 1
else
numLength = numLength + 2
}
return numLength;
}
/*****************************************************************
**** 去除空格 (lhm) *****
*****************************************************************/
function trim(stringToTrim) {
return stringToTrim.replace(/^\s+|\s+$/g,"");
}
function ltrim(stringToTrim) {
return stringToTrim.replace(/^\s+/,"");
}
function rtrim(stringToTrim) {
return stringToTrim.replace(/\s+$/,"");
}
String.prototype.trim = function() {return this.replace(/^\s+|\s+$/g,"");}
String.prototype.ltrim = function() {return this.replace(/^\s+/,"");}
String.prototype.rtrim = function() {return this.replace(/\s+$/,"");}
/*****************************************************************
**** 复选框的全选与取消 (LHM) *****
*****************************************************************/
function CheckAll(form){
var length = form.itemId.length;
var tocheck = form.chkall.checked;
if (length)
for (var i=0; i<length; i++){
if (form.itemId.disabled != true){
form.itemId.checked = tocheck;
}
}
else {
if (form.itemId.disabled !=true){
form.itemId.checked = tocheck;
}
}
}
/*****************************************************************
**** 删除处理 (LHM) *****
*****************************************************************/
function del_btn (form,strMsg,actionurl){
var result = false;
var length = form.itemId.length;
if (form.itemId.checked) { //只有一条记录时执行此语句
result = true;
}
for (var i=0; i<length; i++){
if (form.itemId.checked){
result = true;
break;
}
}
if (!result){
alert ("没有选择任何项目!");
return false;
}else{
if (confirm('\n'+strMsg)){
form.action = actionurl;
return true;
}
return false;
}
}
/*****************************************************************
**** 转化字符串 (LHM) *****
*****************************************************************/
function conversion_code(paraString)
{
strResult = "";
j=0;
for (i=0;i<paraString.length;i++){
Char = String1.charAt(i);
if (Char=="'"){
strResult = strResult + paraString.substring(j,i)+"\\"+"\'";
j=i+1;
}
return strResult;
}
}
/*****************************************************************
**** 数字输入控制处理 (LHM) *****
*****************************************************************/
function InputIntNumberCheck(){
//为支持IE 或 Netscape
var theEvent=window.event || arguments.callee.caller.arguments;
var elm ;
var ver = navigator.appVersion;
if (ver.indexOf("MSIE") != -1){// IE
if ( !((theEvent.keyCode >=48)&&(theEvent.keyCode<=57))){
theEvent.keyCode=0;
}
}else{ // Netscape
if ( !((theEvent.which >=48)&&(theEvent.which<=57))){
theEvent.stopPropagation();
theEvent.preventDefault();
}
}
//
}
/*****************************************************************
**** 有小数点数字输入控制处理 (LHM) *****
*****************************************************************/
function InputLongNumberCheck(){
if ( !((window.event.keyCode >=48)&&(window.event.keyCode<=57) || window.event.keyCode ==46)){
window.event.keyCode=0;
}
var theEvent=window.event || arguments.callee.caller.arguments;
var elm ;
var ver = navigator.appVersion;
if (ver.indexOf("MSIE") != -1){// IE
if (!((theEvent.keyCode>=48)&&(theEvent.keyCode<=57) || theEvent.keyCode ==46)){
theEvent.keyCode=0;
}
}else{ // Netscape
if ( !((theEvent.which >=48)&&(theEvent.which<=57) || theEvent.which ==46)){
theEvent.stopPropagation();
theEvent.preventDefault();
}
}
}
/*****************************************************************
**** 换页处理 *****
*****************************************************************/
function toWhichPage(objform, whichPage){
objform.whichPage.value = whichPage;
objform.submit();
}
/*************************liuxch *******************************
**** 获取cookie内容 *****
*****************************************************************/
function getCookie( name ){
var nameOfCookie = name + "=";
var x = 0;
while ( x <= document.cookie.length ){
var y = (x+nameOfCookie.length);
if ( document.cookie.substring( x, y ) == nameOfCookie ) {
if ( (endOfCookie=document.cookie.indexOf( ";", y )) == -1 )
endOfCookie = document.cookie.length;
return unescape( document.cookie.substring( y, endOfCookie ) );
}
x = document.cookie.indexOf( " ", x ) + 1;
if ( x == 0 ) break;
}
return "";
}
/*****************************************************************
**** 设置cookie内容、过期时间 *****
*****************************************************************/
function setCookie( name, value, expiredays ) {
var todayDate = new Date();
todayDate.setDate( todayDate.getDate() + expiredays );
document.cookie = name + "=" + escape( value ) + "; path=/; expires=" + todayDate.toGMTString() + ";"
}
/*****************************************************************
**** 检查输入字符 (lhm) *****
'// islegality：输入的字符是否为给定的字符
'//返回值：bool
*****************************************************************/
function islegality(checkstrpass){
var checkokpass="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
for (i=0; i<checkstrpass.length; i++) {
ch=checkstrpass.charAt(i);
for (j=0;j<checkokpass.length; j++){
if (ch==checkokpass.charAt(j))
break;
}
if (j==checkokpass.length){
return false; //函有特别字符时返回false
break;
}
}
return true;
}
/**
* 检查输入是否中文
*/
function ck_chinese(value_) {
return escape(value_).indexOf("%u")!=-1
}
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