java web开发常用的js

document.all(name)){
if(document.all(name).length){
for(var i=0;ilimitTextByObj(document.all(name)[i],maxlength);
}
}else{
limitTextByObj(document.all(name),maxlength);
}
}
}

//25.得到字符串长度[中文长度为2] function getLength(strTemp)
function getLength(strTemp){
var i,sum;
sum=0;
for(i=0;i{
if ((strTemp.charCodeAt(i)>=0) && (strTemp.charCodeAt(i)<=255))
sum=sum+1;
else
sum=sum+2;
}
return sum;
}
//26.检查是否是正数 function isPositiveNumber(s)
function isPositiveNumber(s){
var patrn=/^\d*[.]{0,1}\d*$/;
if( patrn.test(s))return s!=0;
return false;
}
//27.是否是负整数 function isNegative(s)
function isNegative(s){
return /-[0-9]*[1-9][0-9]*$/.test(s);
}
//28.str转为数据 function getNumber(s)
function getNumber(s){
if(s==null||s==''||s=='.') return 0;
return Number(s);
}

//29.检查某字符串是否是空字符串 function empty(s)
function empty(s){
if(s==null)return true;
var patrn=/^[\s]*$/;
return patrn.test(s);
}
//30.检查某字符串是否是不是空字符串 function notEmpty(s)
function notEmpty(s){
return !empty(s);
}

//31.是否不包括某些字符串 function isExInclue(source,include);
function isExInclue(source,include){
if(empty(source))return true;
if(empty(include))return false;
for(var i=0;iif(source.indexOf(include.charAt(i))!=-1)return false;
}
return true;
}
//32.格式化实数输入值 function formatDouble(value, deciNum) 参数：value，待格式化数值；deciNum，保留小数点后几位(必须大于0)，多余位数四舍五入。返回值：格式化后的字符串。
function formatDouble(value, deciNum){
var fValue = 0.0;
var strResult = "";
fValue = parseFloat(value + "");
if( !isNaN(fValue) ){
value = fValue + "";
var dotLoc = value.indexOf(".");
var sLen = 0; //有效数字位数
if( dotLoc > 0 ){
sLen = dotLoc + deciNum;
}
else{
sLen = value.length + deciNum;
}
strResult = fValue.toPrecision( sLen );
if( dotLoc>0 && strResult.indexOf(".")>dotLoc ){
//如果小数点左边数值发生进位则多保留一位有效数字
strResult = fValue.toPrecision( sLen + 1 );
}
}
return strResult;
}
//33.将字符串转换为float 默认为0 function parseF(f)
function parseF(f){
return isNaN(parseFloat(f))?0:parseFloat(f);
}

//34.开启新窗口 function openNewWin(url,params,winName)
function openNewWin(url,params,winName){
if(!winName){winName="";}
if(!params){
width = 700;
height =360;
showx = (screen.width - width)/2;
showy = (screen.height - height)/2;
params = "width="+width+", height="+height+", left="+showx+", top="+showy+", help=no,statusbar=no,scrollbars=yes,resizable

=yes,middle=yes";
}
window.open(url, winName,params );
}
//35.开启新窗口 function openNewWinEx(url,width,height,winName,params)
function openNewWinEx(url,width,height,winName,params){
if(!winName){winName=""; }
if(!params){
width = width;
height =height;
showx = (screen.width - width)/2;
showy = (screen.height - height)/2;
params = "width="+width+", height="+height+", left="+showx+", top="+showy+", help=no,statusbar=no,scrollbars=yes,resizable=yes,middle=yes";
}
window.open(url, winName,params );
}
//36.判断是否已选择 function getOneCheckbox(ctrlobj,name)
function getOneCheckbox(ctrlobj,name){
if(ctrlobj==null){alert("没有可选择的"+name); return null;}
var checkedObj=null;
if(ctrlobj.length){
for(var i=0;iif(ctrlobj[i].checked==true){
if(checkedObj!=null){
alert("请选择一个"+name+"进行操作");
return null;
}
checkedObj=ctrlobj[i].value;
}
}
if(checkedObj==null){
alert("请选择一个"+name+"进行操作");
return null;
}
}else{
if(ctrlobj.checked==true){
return ctrlobj.value;
}else{
alert("请选择一个"+name+"进行操作");
return null;
}
}
return checkedObj;
}

//37.判断是否已选择 function isCheckOneRadio(ctrlobj,name)
function isCheckOneRadio(ctrlobj,name){
if(ctrlobj==null){
alert("没有可编辑的"+name);
return false;
}
if(ctrlobj.length>0){
for(var i=0;iif(ctrlobj[i].checked){
return true;
}
}
}
else{
if(ctrlobj.checked){
return true;
}
}
alert("请选择一个"+name+"进行操作");
return false;
}

//38.取得选择的单选按钮value function getOneRadio(ctrlobj,name)
function getOneRadio(ctrlobj,name){
if(ctrlobj==null){
alert("没有可编辑的"+name );
return null;
}
if(ctrlobj.length>0){
for(var i=0;iif(ctrlobj[i].checked){
return ctrlobj[i].value;
}
}
}
else{
if(ctrlobj.checked){
return ctrlobj.value;
}
}
alert("请选择一个"+name+"进行操作");
return null;
}

//39.取得复选框的value值，值之间用逗号隔开 function getCheckBoxvalue(ctrlobj,name)
function getCheckBoxvalue(ctrlobj,name){
if(ctrlobj==null){
alert("没有可选择的"+name);
return null;
}
var checkedObj="";
if(ctrlobj.length>0){
for(var i=0;iif(ctrlobj[i].checked){
if(checkedObj!=''){
checkedObj+=",";
}
checkedObj=checkedObj+ctrlobj[i].value;
}
}
}else{
if(ctrlobj.checked){
checkedObj=ctrlobj.value;
}
}
if(checkedObj==""){
alert("请至少选择一个"+name);
return null;
}
else
return checkedObj;
}
//40.将str 联合到join中

，通过","分割 coll 原有的数据集合str 需要处理的数据集合 jMeth 处理方法 true:加入 false:减去 function joinStr(coll,str,jMeth)
function joinStr(coll,str,jMeth){
//alert("coll:"+coll);
if(coll!=''){
var aSet=coll.split(",");
var needAdd=true;
var delSet=new Array();
for(var i=0;i//alert(aSet[i]+"=="+str+":"+(aSet[i]==str));
if(aSet[i]==str){
needAdd=false;
if(jMeth==false){
delSet[delSet.length]=i;
}
}
}
if(jMeth==false && delSet.length>0){
for(var i=0;iaSet.splice(delSet[i],1);
}
}
if(needAdd==true && jMeth==true){
//alert("add");
aSet[aSet.length]=str;
}
return aSet.toString();
}else{
if(jMeth==false){
return '';
}else{
return str;
}
}
}
//41.图片按比例缩放 调用：
function drawImage(ImgD,width,height){
var image=new Image();
var iwidth = 150; //定义允许图片宽度
if(width){
iwidth=width;
}
var iheight = 100; //定义允许图片高度
if(height){
iheight=height;
}
image.src=ImgD.src;
//alert(image);
//alert(image.width);
if(image.width>0 && image.height>0){
if(image.width/image.height>= iwidth/iheight){
if(image.width>iwidth){
ImgD.width=iwidth;
ImgD.height=(image.height*iwidth)/image.width;
}else{
ImgD.width=image.width;
ImgD.height=image.height;
}
ImgD.alt=image.width+"×"+image.height;
} else{
if(image.height>iheight){
ImgD.height=iheight;
ImgD.width=(image.width*iheight)/image.height;
}else{
ImgD.width=image.width;
ImgD.height=image.height;
}
ImgD.alt=image.width+"×"+image.height;
}
}
}

//42.设置cookie function setCookie(name,value,expiry,path,domain,secure) expiry 终止日期;path 可访问cookie的路径;domain 可访问cookie的主机名;Secure – 安全

function setCookie(name,value,expiry,path,domain,secure){
var nameString = name + "=" + value;
var expiryString = (expiry == null) ? "" : " ;expires = "+ expiry.toGMTString();
var pathString = (path == null) ? "" : " ;path = "+ path;
var domainString = (path == null) ? "" : " ;domain = "+ domain;
var secureString = (secure) ?";secure" :"";
document.cookie = nameString + expiryString + pathString + domainString + secureString;
}
//43.获取Cookie值function getCookie (name)
function getCookie (name) {
var CookieFound = false;
var start = 0;
var end = 0;
var CookieString = document.cookie;
var i = 0;
while (i <= CookieString.length) {
start = i ;
end = start + name.length;
if (CookieString.substring(start, end) == name){
CookieFound = true;
break;
}
i++;
}

if (CookieFound){
start = end + 1;
end = CookieString.indexOf(";",start);
if (end < start)

end = CookieString.length;
return unescape(CookieString.substring(start, end));
}
return "";
}
//44.删除Cookie值 function getCookie (name);
function deleteCookie(name){
var expires = new Date();
expires.setTime (expires.getTime() - 1);
setCookie( name , "Delete Cookie", expires,null,null,false);
}

//45.表单空值表单空值、长度效验 function checkForm();
function checkForm(){//表单空值、长度效验
var tagName="INPUT,TEXTAREA,SELECT";
var tagNames = tagName.split(",");
for(var i=0;ivar o = document.getElementsByTagName(tagNames[i]);
for(var j=0;jvar notnull = o[j].getAttribute("notnull");
if(typeof(notnull) == "object" && notnull != null){
notnull = notnull.value;
}
var titleName = o[j].getAttribute("titleName");
var maxLength = o[j].getAttribute("maxLength");
if(typeof(notnull) == "string" && notnull == "true"){
var gpc = o[j].value;
if(trim(gpc) == ""){
alert(titleName + " 为必填项！");
return false;
}
}
if(maxLength != null && typeof(maxLength) == "number"){
maxLength = parseInt(maxLength);
var gpc = o[j].value;
if(trim(gpc).length > maxLength){
alert(titleName + " 字段超过长度(0,"+ maxLength + "]");
return false;
}
}
}
}
return true;
}

//46.判断两个数组内的值是否完全相等，忽略顺序 function isAllSame(s1,s2);
function isAllSame(s1,s2){
if(s1.length==s2.length){
var isSame=false;
for(var i=0;ivar isOneSame=false;
for(var j=0;jif(s1[i]==s2[j]){
isOneSame=true;
break;
}
}
if(!isOneSame){
return false;
}
}
return true;
}else{
return false;
}
}


//47.两个数组取交集 function getSameArray(s1,s2)
function getSameArray(s1,s2){
//alert(s1.length+":"+s2.length);
var sames=new Array();
for(var i=0;ifor(var j=0;jif(s1[i]==s2[j]){
sames[sames.length]=s1[i];
//break;
}
}
}
return sames;
}

//48.将数组转换为指定字符分割的串，默认使用"," function arrayToStr(s,spStr)
function arrayToStr(s,spStr){
var splitStr=",";
if(spStr&&spStr!=null&&spStr!=""){splitStr=spStr;}
var str="";
for(var i=0;iif(str!=""){
str+=splitStr;
}
str+=s[i];
}
return str;
}

//49.判断字符串是否在某数组内 function inArray(s,array)
function inArray(s,array){
for(var i=0;iif(s==array[i]){
return true;
}
}
return false;
}

//50.取字符串的前len位,多余字符用...替代 function getShortString(s,len);
function getShortString(s,len){
if(s&&s!=null&&trim(s)

.length>0){
s=trim(s);
if(s.length<=len){
return s;
}else{
return s.substring(0,len)+"...";
}
}
return "";
}


//51.格式化数字变金额分隔 function formatNumber(objValue) ;
function formatNumber(objValue){
//alert(objValue);
objValue = objValue + "";
var digit = objValue.indexOf("."); // 取得小数点的位置
//alert(digit);
var intVal = objValue.substr(0,digit); // 取得小数中的整数部分

var i;
var mag = new Array();
var word;
if (objValue.indexOf(".") == -1) { // 整数时
i = objValue.length; // 整数的个数
while(i > 0) {
word = objValue.substring(i,i-3); // 每隔3位截取一组数字
i-= 3;
mag.unshift(word); // 分别将截取的数字压入数组
}
return mag;
}else{ // 小数时
i = intVal.length; // 除小数外，整数部分的个数
while(i > 0) {
word = intVal.substring(i,i-3); // 每隔3位截取一组数字
i-= 3;
mag.unshift(word);
}
return mag + objValue.substring(digit);
}
}

//52. 校验身份证的合法性 function checkIdCard(idCard)
function checkIdCard(idCard){
var regName = /^\d{15}(\d{2}[A-Za-z0-9])?$/;
if (!regName.test(idCard)) {
alert("您的身份证号码长度应为15位或18位!");
return false;
}
return true;
}

//53.日期比较....startDate=document.all("faStartTime").value; function isLowerDate(startDate, endDate)
function isLowerDate(startDate, endDate) {
if (startDate == null || endDate == null) {
alert('请输入日期！');
return false;
}
var faStartTime = startDate.split("-");
var faEndTime = endDate.split("-");
var faStartDate = new Date(faStartTime[0] + '/' + faStartTime[1] + '/' + faStartTime[2]);
var faEndDate = new Date(faEndTime[0] + '/' + faEndTime[1] + '/' + faEndTime[2]);
if (isNaN(faStartDate) || isNaN(faEndDate) || faStartDate <= faEndDate) {
return true;
} else {
return false;
}
}

//54.校验TextArea的是否超出最大长度 function checkTextAreaLength(obj, fieldName, maxCharacterNum)
function checkTextAreaLength(obj, fieldName, maxCharacterNum) {
if (obj == null || fieldName == null || maxCharacterNum < 0) {
alert("参数有误!");
}
if (obj.value.length > maxCharacterNum/2) {
alert(fieldName + "长度不能超过" + maxCharacterNum + "个字母或" + parseInt(maxCharacterNum/2) + "个中文!");
}
}

//55. 判断输入的EMAIL格式是否正确 function isEmail(email)
function isEmail(email) {
if (email != null && email.length!=0) {
reg=/^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
if (!reg.test(email)) {
alert("对不起，您输入的字符串类型格式不正确!");
}
}
}

//56. 判断输入的邮编(只能为六位)是否正确 function isZIP(zip)
function isZIP(zip) {
if (zip != null && zip.length!=0) {
reg=/^\d{6}$/;
if (!reg.test(zip))

{
alert("对不起，您输入的字符串类型格式不正确!");
}
}
}

//57.检查是否为正整数 function isUnsignedInteger(obj)
function isUnsignedInteger(obj) {
if (obj != null) {
var reg=/^\d+$/;
if (reg.test(obj.value)) {
return true;
} else {
alert("请输入有效的整数!");
obj.focus();
return false;
}
} else {
return false;
}
}

//58. 鼠标移动到该行 function toTrMouseMove(ctrlobj);
function toTrMouseMove(ctrlobj) {
if(ctrlobj.className.indexOf("trHighLight")<0)
ctrlobj.className += " trHighLight";
}

//59. 鼠标移出该行 function toTrMouseMove(ctrlobj);
function toTrMouseOut(ctrlobj) {
if(ctrlobj.className.indexOf("trHighLight")>=0)
ctrlobj.className=ctrlobj.className.replace(" trHighLight","");
}

//60. 验证多行的美列是否为空function valIsNull(styleclass,name);
function valIsNull(styleclass,name)
{
var tmp=true;
$(styleclass).each(function(){
if($(this).val()==null || $(this).val()=='')
{
alert(name + "不能为空!");
$(this).focus();
tmp=false;
return false;
}
});
return tmp;
}
//61.打印和打印预览 function print(url,mode,divid)
//url 调用action获取数据
//mode 打印JRPrinterApplet , 打印预览JRViewApplet
//divid 页面放一个id="id" 的div
function print(url,mode,divid)
{
var tmp='';
$("#"+divid).html(tmp);

//document.write('');
//document.write('');
//document.write('');
//document.write('');
//document.write('');
}

//62. 对table的序号栏位进行排序 function orderTableTr(param) 参数为排序部位的ID
function orderTableTr(param){
var rowNum = 1;
$("#"+param).find("tr").each(function(){
$(this).find("td:eq(1)").each(function(){
$(this).html(rowNum);rowNum++;
});
});
}
//63.删除选中行obj为行所在的部位ID,styleClass为多选框的class属性值
function delRowByID(obj,styleClass)
{
$("#

"+obj+" input[name="+styleClass+"]:checked").each(function(){
$(this).parent().parent().remove();
});
}

//64.弹出窗口根据页面大小改变大小 function resizeMy();
function resizeMy(){
window.dialogWidth="1005px";
if( document.body.scrollHeight > (window.screen.availHeight-70) ){
window.dialogHeight = (window.screen.availHeight-50).toString() + "px";
}else{
window.dialogHeight = (document.body.scrollHeight).toString() + "px";
}

window.dialogLeft = ((window.screen.availWidth - document.body.clientWidth) / 2).toString() + "px";
window.dialogTop = ((window.screen.availHeight - document.body.clientHeight) / 2).toString() + "px";
}

//65.验证电话号码 function checkphone(phone)
function checkphone(phone)
{
var str=phone;
//在JavaScript中，正则表达式只能使用"/"开头和结束，不能使用双引号
//验证手机号码
var Expression=/^(\+86)?(((13[0-9]{1})|(15[0-9]{1})|(18[0,5-9]{1}))+\d{8})$/;
//验证座机号码
var Expression1=/^(\d{3,4}-)\d{5,8}$/;
var objExp=new RegExp(Expression);
var objExp1 = new RegExp(Expression1);
if(objExp.test(str)==true)//先验证是否是手机
{
return true;
}
else
{
if(objExp1.test(str)==true)//在验证是否是座机
return true;
return false;
}
}
//66.对sString字符串进行前空格截除 function LTrim(sString)
function LTrim(sString){
var sStr,i,iStart,sResult = "";
sStr = sString.split("");
iStart = -1 ;
for (i = 0 ; i < sStr.length ; i++){
if (sStr[i] != " ") {
iStart = i;
break;
}
}
if (iStart == -1) { return "" ;} //表示sString中的所有字符均是空格,则返回空串
else { return sString.substring(iStart) ;}
}
//67.对sString字符串进行后空格截除 function RTrim(sString)
function RTrim(sString){
var sStr,i,sResult = "",sTemp = "" ;
// if (sString.length == 0) { return "" ;} // 参数sString是空串

sStr = sString.split("");
for (i = sStr.length - 1 ; i >= 0 ; i --) { // 将字符串进行倒序
sResult = sResult + sStr[i];
}
sTemp = LTrim(sResult) ; // 进行字符串前空格截除

if (sTemp == "") { return "" ; }

sStr = sTemp.split("");
sResult = "" ;
for (i = sStr.length - 1 ; i >= 0 ; i--){ // 将经处理后的字符串再进行倒序
sResult = sResult + sStr[i];
}
return sResult ;
}