Javascript several commonly used form input judgement
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/ / Function description: check whether they contain "'",' \ \',"/"
/ / Parameter Description: It is necessary to check the string
/ / Return values: 0: 1: No
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;
* /
)
/ / Function: chkspc
/ / Function description: check if they contain spaces
/ / Parameter Description: It is necessary to check the string
/ / Return values: 0: 1: No
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)
2 (return;)
Else
(
Return 1;
)
)
/ / Function: chkemail
/ / Function description: check whether Email Address
/ / Parameter Description: It is necessary to check the string
/ / Return values: 0: No. 1:
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 negative decimal opt2
/ / 1:00 when opt2 to check whether the negative num
/ / 1:00 when opt1 to check whether the minority num
/ / 1 is right, wrong is 0
Function chknbr (num, opt1, opt2)
(
Var i = num.length;
Var staus;
/ / Staus for the record. Number of
Status = 0;
If ((opt2! = 1) & (num.charAt (0 )=='-'))
(
/ / Alert ( "You have enter a invalid number.");
Return 0;
)
/ / When the last one was. Error
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: chkdate
/ / Function description: check whether the date
/ / Parameter Description: It is necessary to check the string
/ / Return values: 0: No Date 1: Yes 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> 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;
)
/ / Function: fucPWDchk
/ / Function description: check if they contain non-numeric or alphanumeric
/ / Parameter Description: It is necessary to check the string
/ / Return values: 0: containing 1: All numeric or alphanumeric
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.substr str = ((1);)
While (str.charAt (str.length-1) == "")
(Str.substr str = (0, str.length-1);)
Return (str);
)
/ / Function: fucCheckNUM
/ / Function description: check whether the figures
/ / Parameter Description: It is necessary to check the figures
/ / Return value: 1 for the figures, the number 0 is not
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)
(
/ / Note characters are not just numbers
Return 0;
)
)
/ / Note figures
Return 1;
)
/ / Function: fucCheckTEL
/ / Function description: check whether the numbers
/ / Parameter Description: It is necessary to check the string
/ / Return value: 1 for a lawful, not for legitimate 0
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)
(
/ / Characters that are not legitimate
Return 0;
)
)
/ / Note legitimate
Return 1;
)
/ / Function: fucCheckLength
/ / Function description: check the length of the string
/ / Parameter Description: It is necessary to check the string
/ / Return values: Length of
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;
)
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