JavaScript several commonly used form input judgments

JavaScript//Function name: Chksafe
Function Description: Check whether contains "'", ' \ \ ', '/'
Parameter description: The string to check
Return value: 0: is 1: not

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 ';p 1==temp2)
{return 0;}
}
}
return 1;
*/
}

Function Name: CHKSPC
Feature Description: Check to see if any spaces are included
Parameter description: The string to check
Return value: 0: is 1: not

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;
}
}

Function Name: Chkemail
Function Introduction: Check whether for email address
Parameter description: The string to check
Return value: 0: not 1: Yes

function Chkemail (a)
{var i=a.length;
var temp = a.indexof (' @ ');
var tempd = A.indexof ('. ');
if (Temp > 1) {
if ((i-temp) > 3) {

if ((I-TEMPD) >0) {
return 1;
}

}
}
return 0;
}//OPT1 Decimal Opt2 Negative number
Check if NUM is negative when OPT2 is 1 o'clock
Check to see if NUM is a decimal when OPT1 is 1 o'clock
Return 1 is correct, 0 is wrong
function Chknbr (NUM,OPT1,OPT2)
{
var i=num.length;
var Staus;
The number of staus used for recording.
status=0;
if ((opt2!=1) && (num.charat (0) = = '-")
{
Alert ("You have enter a invalid number.");
return 0;

}
An error occurred when the last one was.
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;
}
Function Name: chkdate
Function Description: Check whether the date
Parameter description: The string to check
Return value: 0: Not date 1: is the date



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&GT;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 isn't 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;
}
Function Name: Fucpwdchk
Function Introduction: Check whether contains not the numeral or the letter
Parameter description: The string to check
Return value: 0: Contains 1: all digits or letters


function Fucpwdchk (str)
{
var strsource = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
var ch;
var i;
var temp;

For (i=0;i<= (str.length-1); i++)
{

ch = str.charat (i);
temp = strsource.indexof (CH);
if (temp==-1)
{
return 0;
}
}
if (Strsource.indexof (CH) ==-1)
{
return 0;
}
Else
{
return 1;
}
}

function Jtrim (str)
{while (Str.charat (0) = = "")
{str=str.substr (1);}
while (Str.charat (str.length-1) = "")
{str=str.substr (0,str.length-1);}
return (str);
}

Function Name: Fucchecknum
Feature Description: Check for numbers
Parameter description: The number to check
Return value: 1 is a number, 0 is not a number

function Fucchecknum (NUM)
{
var i,j,strtemp;
strtemp= "0123456789";
if (num.length== 0)
return 0
for (i=0;i<num.length;i++)
{
J=strtemp.indexof (Num.charat (i));
if (j==-1)
{
Indicates that a character is not a number
return 0;
}
}
Description is a number
return 1;
}
Function Name: Fucchecktel
Function Description: Check whether the phone number
Parameter description: The string to check
Return value: 1 is legal, 0 is illegal

function Fucchecktel (TEL)
{
var i,j,strtemp;
Strtemp= "0123456789-() #";
for (i=0;i<tel.length;i++)
{
J=strtemp.indexof (Tel.charat (i));
if (j==-1)
{
Indicates that there are characters that are not legal
return 0;
}
}
Description Legal
return 1;
}

Function Name: fucchecklength
Feature Description: Check the length of the string
Parameter description: The string to check
Return value: Length value

function Fucchecklength (strtemp)
{
var i,sum;
sum=0;
for (i=0;i<strtemp.length;i++)
{
if ((Strtemp.charcodeat (i) >=0) && (Strtemp.charcodeat (i) <=255))
sum=sum+1;
Else
sum=sum+2;
}
return sum;
}