复制代码 代码如下:

String.prototype.trim = function(){
return this.replace(/(^\\s*)|(\\s*$)/g, \"\");
}

//检查是否是日期格式
function isDate(datestr){
var result = datestr.match(/((^((1[8-9]\\d{2})|([2-9]\\d{3}))(-)(10|12|0?[13578])(-)(3[01]|[12][0-9]|0?[1-9])$)|(^((1[8-9]\\d{2})|([2-9]\\d{3}))(-)(11|0?[469])(-)(30|[12][0-9]|0?[1-9])$)|(^((1[8-9]\\d{2})|([2-9]\\d{3}))(-)(0?2)(-)(2[0-8]|1[0-9]|0?[1-9])$)|(^([2468][048]00)(-)(0?2)(-)(29)$)|(^([3579][26]00)(-)(0?2)(-)(29)$)|(^([1][89][0][48])(-)(0?2)(-)(29)$)|(^([2-9][0-9][0][48])(-)(0?2)(-)(29)$)|(^([1][89][2468][048])(-)(0?2)(-)(29)$)|(^([2-9][0-9][2468][048])(-)(0?2)(-)(29)$)|(^([1][89][13579][26])(-)(0?2)(-)(29)$)|(^([2-9][0-9][13579][26])(-)(0?2)(-)(29)$))/);
if(result==null){
return \"no\";
}
return \"yes\";
}

//此方法以上面效果一致
function isDate2(datestr) {
var result = datestr.match(/^(\\d{1,4})(-|\\/)(\\d{1,2})\\2(\\d{1,2})$/);
if (result == null)
return \"no\";
var d = new Date(result[1], result[3] - 1, result[4]);
if((d.getFullYear() == result[1] && (d.getMonth() + 1) == result[3] && d.getDate() == result[4])){
return \"yes\";
}
return \"no\";
}

//判断输入的字符是否为中文
function IsChinese(str){
if(str.length!=0){
reg=/^[\\u0391-\\uFFE5]+$/;
if(!reg.test(str)){
// alert(\"对不起，您输入的字符串类型格式不正确!\");
return \"no\";
}
}
return \"yes\";
}


//判断是否为空
function isEmpty(str){
if(str==null||typeof str==\"undefined\"||str.trim()==\"\"){
return true;
}else{
return false;
}
}

//固定电话
function testTelephone(phone){
var phone_reg = new RegExp(/^([+]{0,1}\\d{3,4}|\\d{3,4}-)?\\d{7,8}$/);
if(!phone_reg.test(phone)){
return \"no\";
}
return \"yes\";
}
//折扣
function isDiscount(discount){
var phone_reg = new RegExp(/^(0([\\.]\\d{1,2})|1|1.00|1.0)$/);
if(!phone_reg.test(discount)){
return \"no\";
}
return \"yes\";
}
//手机号码
function testMobile(mobile){
var mobile_reg = new RegExp(/^0{0,1}1[0-9]{10}$/);
if(!mobile_reg.test(mobile)){
return \"no\";
}
return \"yes\";
}
//QQ号码从10000开始
function testQQ(qq){
var qq_reg = new RegExp(/^[1-9][0-9]{4,}$/);
if(!qq_reg.test(qq)){
return \"no\";
}
return \"yes\";
}
//电子邮件
function testEmail(email){
var email_reg = new RegExp(/^\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*.\\w+([-.]\\w+)*$/);
if(!email_reg.test(email)){
return \"no\";
}
return \"yes\";
}

//不带符号的正整数
function testPlusDigit(digit){
var plusDigit_reg = new RegExp(/^\\d+$/);
if(!plusDigit_reg.test(digit)){
return \"no\";
}
return \"yes\";
}

//DOUBLE价格
function testPriceFormat(str){
var priceFormatReg = new RegExp(/^\\d+(.\\d{1,2})?$/);
if(!priceFormatReg.test(str)){
return \"no\";
}
return \"yes\";
}

//身份证
function testIDCard(str){
var IDCardReg = new RegExp(/(^\\d{15}$)|(^\\d{17}([0-9]|X)$)/);
if(!IDCardReg.test(str)){
return \"no\";
}
return \"yes\";
}

//2012-06-19日期格式
function testDate(str){
var dateReg = new RegExp(/(^\\d{4}-[0,1][0-9]-[0-3][0-9]$)/);
if(!dateReg.test(str)){
return \"no\";
}
return \"yes\";
}



//浮点数精确运算(加法)
function accAdd(arg1,arg2){
var r1,r2,m,n;
try{r1=arg1.toString().split(\".\")[1].length}catch(e){r1=0}
try{r2=arg2.toString().split(\".\")[1].length}catch(e){r2=0}
m=Math.pow(10,Math.max(r1,r2));
n=(r1>=r2)?r1:r2;
return ((arg1*m+arg2*m)/m).toFixed(n);
}
Number.prototype.add = function (arg){
return accAdd(arg,this);
}

//浮点数精确运算(减法)
function accSub(arg1,arg2){
return accAdd(arg1,-arg2);
}
Number.prototype.subtract = function (arg){
return accSub(this,arg);
}

//浮点数精确运算(乘法)
function accMul(arg1,arg2)
{
var m=0,s1=arg1.toString(),s2=arg2.toString();
try{m+=s1.split(\".\")[1].length}catch(e){}
try{m+=s2.split(\".\")[1].length}catch(e){}
return Number(s1.replace(\".\",\"\"))*Number(s2.replace(\".\",\"\"))/Math.pow(10,m)
}
Number.prototype.mul = function (arg){
return accMul(arg, this);
}

//浮点数精确运算(除法)
function accDiv(arg1,arg2){
var t1=0,t2=0,r1,r2;
try{t1=arg1.toString().split(\".\")[1].length}catch(e){}
try{t2=arg2.toString().split(\".\")[1].length}catch(e){}
with(Math){
r1=Number(arg1.toString().replace(\".\",\"\"))
r2=Number(arg2.toString().replace(\".\",\"\"))
return (r1/r2)*pow(10,t2-t1);
}
}
Number.prototype.div = function (arg){
return accDiv(this, arg);
}

//限制输入数字
function isNumber(e) {
if ($.browser.msie) {
if ( ((event.keyCode > 47) && (event.keyCode < 58)) ||
(event.keyCode == 8) ) {
return true;
} else {
return false;
}
} else {
if ( ((e.which > 47) && (e.which < 58)) ||
(e.which == 8) ) {
return true;
} else {
return false;
}
}
}


//字符串长度截取
function cutstr(str, len) {
var temp;
var icount = 0;
var patrn = /[^\\x00-\\xff]/;
var strre = \"\";
for (var i = 0; i < str.length; i++) {
if (icount < len - 1) {
temp = str.substr(i, 1);
if (patrn.exec(temp) == null) {
icount = icount + 1;
} else {
icount = icount + 2;
}
strre += temp;
} else {
break
}
}
return strre + \"...\";
}

//获取域名主机
function getHost(url) {
var host = \"null\";
if (typeof url == \"undefined\" || null == url) {
url = window.location.href;
}
var regex = /^\\w+\\:\\/\\/([^\\/]*).*/;
var match = url.match(regex);
if (typeof match != \"undefined\" && null != match) {
host = match[1];
}
return host;
}

//判断某个值是否在所在范围
//rang=1 表示正整数[0,2147483647] 2表示float[0,3.4028235E38]
//return= \'empty\' 表示输入为空,
function isRang(str,rang){
if(typeof str == \"number\"){
var num = Number(str);
//判断是否在正整数范围
if( rang == 1){
if(testPlusDigit(num)==\"yes\"){
if(num>=0&&num<=2147483647){
return \"is_int\";
}else{
return \"is_not_int_rang\";
}
}else{
return \"is_not_int\";
}
}else if(rang == 2){
if(testPriceFormat(num)==\"yes\"){
if(num>=0&&num<=3.4028235E38){
return \"is_float\";
}else{
return \"is_not_float_rang\";
}
}else{
return \"is_not_float\";
}
}else{
return \"rang_is_not_right\";
}
}else{
return \"is_not_number\";
}
}