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/*
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function isNumberOr_Letter( s ){//ÅжÏÊÇ·ñÊÇÊý×Ö»ò×Öĸ
var regu = "^[0-9a-zA-Z\_]+$";
var re = new RegExp(regu);
if (re.test(s)) {
return true;
}else{
return false;
}
}
/*
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function isNumberOrLetter( s ){//ÅжÏÊÇ·ñÊÇÊý×Ö»ò×Öĸ
var regu = "^[0-9a-zA-Z]+$";
var re = new RegExp(regu);
if (re.test(s)) {
return true;
}else{
return false;
}
}
/*
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value£º×Ö·û´®
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function isChinaOrNumbOrLett( s ){//ÅжÏÊÇ·ñÊǺº×Ö¡¢×Öĸ¡¢Êý×Ö×é³É
var regu = "^[0-9a-zA-Z\u4e00-\u9fa5]+$";  
var re = new RegExp(regu);
if (re.test(s)) {
return true;
}else{
return false;
}
}
/*
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*/
function isDate( date, fmt ) {
if (fmt==null) fmt="yyyyMMdd";
var yIndex = fmt.indexOf("yyyy");
if(yIndex==-1) return false;
var year = date.substring(yIndex,yIndex+4);
var mIndex = fmt.indexOf("MM");
if(mIndex==-1) return false;
var month = date.substring(mIndex,mIndex+2);
var dIndex = fmt.indexOf("dd");
if(dIndex==-1) return false;
var day = date.substring(dIndex,dIndex+2);
if(!isNumber(year)||year>"2100" || year< "1900") return false;
if(!isNumber(month)||month>"12" || month< "01") return false;
if(day>getMaxDay(year,month) || day< "01") return false;
return true;
}
function getMaxDay(year,month) {
if(month==4||month==6||month==9||month==11)
return "30";
if(month==2)
if(year%4==0&&year%100!=0 || year%400==0)
return "29";
else
return "28";
return "31";
}
/*
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