//opt1 小數(shù) opt2 負(fù)數(shù)
//當(dāng)opt2為1時(shí)檢查num是否是負(fù)數(shù)
//當(dāng)opt1為1時(shí)檢查num是否是小數(shù)
//返回1是正確的，0是錯(cuò)誤的
function chknbr(num,opt1,opt2)
{
var i=num.length;
var staus;
//staus用于記錄.的個(gè)數(shù)
status=0;
if ((opt2!=1) && (num.charAt(0)=='-'))
{
//alert("You have enter a invalid number.");
return 0;

}
//當(dāng)最后一位為.時(shí)出錯(cuò)
if (num.charAt(i-1)=='.')
{
//alert("You have enter a invalid number.");
return 0;
}

for (j=0;j<i;j++)
{
if (num.charAt(j)=='.')
{
status++;
}
if (status>1)
{
//alert("You have enter a invalid number.");
return 0;
}
if (num.charAt(j)<'0' || num.charAt(j)>'9' )
{
if (((opt1==0) || (num.charAt(j)!='.')) && (j!=0))
{
//alert("You have enter a invalid number.");
return 0;
}
}
}
return 1;
}

//函數(shù)名：chkdate
//功能介紹：檢查是否為日期
//參數(shù)說(shuō)明：要檢查的字符串
//返回值：0：不是日期 1：是日期
function chkdate(datestr)
{
var lthdatestr
if (datestr != "")
lthdatestr= datestr.length ;
else
lthdatestr=0;

var tmpy="";
var tmpm="";
var tmpd="";
//var datestr;
var status;
status=0;
if ( lthdatestr== 0)
return 0

for (i=0;i<lthdatestr;i++)
{ if (datestr.charAt(i)== '-')
{
status++;
}
if (status>2)
{
//alert("Invalid format of date!");
return 0;
}
if ((status==0) && (datestr.charAt(i)!='-'))
{
tmpy=tmpy+datestr.charAt(i)
}
if ((status==1) && (datestr.charAt(i)!='-'))
{
tmpm=tmpm+datestr.charAt(i)
}
if ((status==2) && (datestr.charAt(i)!='-'))
{
tmpd=tmpd+datestr.charAt(i)
}

}
year=new String (tmpy);
month=new String (tmpm);
day=new String (tmpd)
//tempdate= new String (year+month+day);
//alert(tempdate);
if ((tmpy.length!=4) || (tmpm.length>2) || (tmpd.length>2))
{
//alert("Invalid format of date!");
return 0;
}
if (!((1<=month) && (12>=month) && (31>=day) && (1<=day)) )
{
//alert ("Invalid month or day!");
return 0;
}
if (!((year % 4)==0) && (month==2) && (day==29))
{
//alert ("This is not a leap year!");
return 0;
}
if ((month<=7) && ((month % 2)==0) && (day>=31))
{
//alert ("This month is a small month!");
return 0;

}
if ((month>=8) && ((month % 2)==1) && (day>=31))
{
//alert ("This month is a small month!");
return 0;
}
if ((month==2) && (day==30))
{
//alert("The Febryary never has this day!");
return 0;
}

return 1;
}
//函數(shù)名：chksafe
//功能介紹：檢查是否含有"'",'\\',"/"
//參數(shù)說(shuō)明：要檢查的字符串
//返回值：0：是 1：不是
function chksafe(a)
{
return 1;
/* fibdn = new Array ("'" ,"\\", "、", ",", ";", "/");
i=fibdn.length;
j=a.length;
for (ii=0;ii<i;ii++)
{ for (jj=0;jj<j;jj++)
{ temp1=a.charAt(jj);
temp2=fibdn[ii];
if (tem';p1==temp2)
{ return 0; }
}
}
return 1;
*/
}

//函數(shù)名：chkspc
//功能介紹：檢查是否含有空格
//參數(shù)說(shuō)明：要檢查的字符串
//返回值：0：是 1：不是
function chkspc(a)
{
var i=a.length;
var j = 0;
var k = 0;
while (k<i)
{
if (a.charAt(k) != " ")
j = j+1;
k = k+1;
}
if (j==0)
{
return 0;
}

if (i!=j)
{ return 2; }
else
{
return 1;
}
}