Common javascriptfunction code _ javascript skills

Some common javascript Functions are used as reference for learning. // mhHover ('start ID name', 'nth TD tag', 'style name ')

Program code

Function mhHover (tbl, idx, cls ){
Var t, d;
If (document. getElementById) t = document. getElementById (tbl );
Else t = document. all (tbl );
If (t = null) return;
If (t. getElementsByTagName) d = t. getElementsByTagName ("TD ");
Else d = t. all. tags ("TD ");
If (d = null) return;
If (d. length <= idx)
Return;
D [idx]. className = cls;
}

// Drop-down menu to show hidden IDS
// Usage
// OnChange = "OptionNumber_change ('form name', 'Id with the same name (sequence number automatically taken )')"
// Note: the Value of the form must be a number.

Program code

Function OptionNumber_change (selObj, strOpt)
{
Var a = (selObj. options [selObj. selectedIndex]. value );
For (I = 1; I <= a; I ++)
{
Document. getElementById (strOpt + I). style. display = "";
}
For (j = 10; j> a; j --)
{
Document. getElementById (strOpt + j). style. display = "none ";
}
}

// Read the database and show the hidden ID
// Usage
//

Program code

Function ListNumber_change (ListObj, ListStr)
{
Var a = ListObj;
For (I = 1; I <= a; I ++)
{
Document. getElementById (ListStr + I). style. display = "";
}
For (j = 10; j> a; j --)
{
Document. getElementById (ListStr + j). style. display = "none ";
}
}

// Iframe adaptive height
// Usage:
// OnLoad = "reSizeFrame ('iframe ID name ')"

Program code

Function reSizeFrame (frameID) {// frameID is your ifream name
Try {
Var oBody = eval (frameID + ". document. body ");
Var oFrame = document. all (frameID );
OFrame. style. height = oBody. scrollHeight + (oBody. offsetHeight-oBody. clientHeight );
}
Catch (e ){
Window. status = 'error: '+ e. number +'; '+ e. description;
}
}

// Select all check boxes
// Usage:
// Onclick = CheckAll (this. form, this. checked)

Program code

Function CheckAll (form1, v ){
For (var I = 0; I Var e = form1.elements [I];
If (e. type = 'checkbox') e. checked = v;
}
}

// Verify the correctness of the form string expression

Program code

Function regExpCheck (re, getO, msg)
{
If (re. test (getO. value) = false)
{
If (getO. msg)
{
Msg = getO. msg + msg
}
Alert (msg)
GetO. focus ();
Return false;
}
Return true;
}

// Verify the user name

Program code

Function checkAccount (getO)
{
Re =/^ ([a-z0-9] {}) $/gi
Msg = "username format: 4-12 digits in lowercase (a-z) (0-9 )"
Return regExpCheck (re, getO, msg)
}

// Verify the password

Program code

Function checkPassY (getO)
{
Re =/^ ([A-Za-z0-9] {8, 12}) $/gi
Msg = "Login Password format: 8-12 English (A-Z, a-z) number (0-9 )"
Return regExpCheck (re, getO, msg)
}

// Verify the real name

Program code

Function checkNameN (getO)
{
Re =/^ [^ \ '\, \ ;\\ |\@\*] {} $/gi
Msg = "Incorrect real name format"
Xx = regExpCheck (re, getO, msg)
If (xx = true)
{
Re =/[^-}]/gi
GV = getO. value
If (gV. match (re) = null)
Return true
Else
{
GV_c = (gV. match (re). length
GV_e = V. length-gV_c
Gv_len = gV_c * 2 + gV_e
If (gv_len> 20)
{
Alert ("cannot exceed 10 characters ")
Return false;
}
Else
Return true
}
}
Else
Return false;
}

// Verify the ID card number

Program code

Function checkIdCard (getO)
{
Re =/^ ([0-9] {15}) | ([0-9a-z] {18}) $/gi;
Msg = "Incorrect ID card format"
Return regExpCheck (re, getO, msg)
}

// Verify the email

Program code

Function checkEmail (getO)
{
Re =/^ ([\. \ w-]) {2, 30} @ ([\ w-]) {3, 30 }(\. ([\ w]) {2, 4}) {1, 2}/gi
Msg = "Incorrect email format"
Return regExpCheck (re, getO, msg)
}

// Verify the zip code

Program code

Function checkZipCode (getO)
{
Re =/^ ([0-9] {6}) $/gi
Msg = "zip code format: 6 digits (0-9 )"
Return regExpCheck (re, getO, msg)
}

// Verify the phone number

Program code

Function checkPhone (getO)
{
Re =/^ ([\ d]) {2, 5}-([\ d]) {3, 14}/gi
Msg = "phone format error \ r \ n region number and phone number should be separated by"-", for example: 029-82303721"
Return regExpCheck (re, getO, msg)
}

// Verify the mobile phone number

Program code

Function checkMobile (getO)
{
Re =/^ (\ +? [0-9] {0, 3} 13 [0-9] {9}) $/gi
Msg = "Incorrect mobile phone format"
Return regExpCheck (re, getO, msg)
}

// Verify the verification code

Program code

Function checkVcode (getO)
{
Re =/^ (\ d {4}) $/gi
Msg = "Incorrect verification code format"
Return regExpCheck (re, getO, msg)
}
// Verify the number 1
Function checkNumber (getO)
{
Re =/^ \ d + $/gi
Msg = "format error. Enter 0 ~ 9 digit"
Return regExpCheck (re, getO, msg)
}
// Verify number 2
Function checkNumberText (get0, msg0)
{
Re =/^ \ d + $/gi
// Msg = msg0
Return regExpCheck (re, get0, msg0)
}