Common JavaScript function code _javascript tips

Mhhover (' Start ID name ', ' X 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, show hidden ID
How to use
Onchange= "Optionnumber_change (' form name ', ' ID name same part (sequence number automatic value) ')"
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 = j > A; j--)
{
document.getElementById (stropt+j). Style.display = "None";
}
}

Read the database, show hidden IDs
How to use
//

Program code

function Listnumber_change (LISTOBJ,LISTSTR)
{
var a = Listobj;
for (i = 1; i <= A; i++)
{
document.getElementById (liststr+i). Style.display = "";
}
for (j = j > A; j--)
{
document.getElementById (liststr+j). Style.display = "None";
}
}

Self-adaptive height of IFRAME
How to use:
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
How to use:
Onclick=checkall (this.form,this.checked)

Program code

function Checkall (form1,v) {
for (Var i=0;i<form1.elements.length;i++) {
var e = form1.elements[i];
if (e.type== ' checkbox ') e.checked = v;
}
}

Verifying the correctness of form string expressions

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;
}

Verifying user Names

Program code

function CheckAccount (Geto)
{
Re=/^ ([a-z0-9]{4,12}) $/gi
msg = "username format: 4-12 lowercase (A-Z) digits (0-9)"
Return Regexpcheck (RE,GETO,MSG)
}

Verify Password

Program code

function Checkpassy (Geto)
{
Re=/^ ([a-za-z0-9]{8,12}) $/gi
msg = "Login password format: 8-12-digit English (a-z,a-z) number (0-9)"
Return Regexpcheck (RE,GETO,MSG)
}

Verify real name

Program code

function Checknamen (Geto)
{
Re=/^[^\ ' \,\;\$\|\@\*]{2,10}$/gi
msg = "real name format error"
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 = Gv.length-gv_c
Gv_len = gv_c*2 + gv_e
if (gv_len>20)
{
Alert ("cannot be longer than 10 characters")
return false;
}
Else
return True
}
}
Else
return false;
}

Verify ID Number

Program code

function Checkidcard (Geto)
{
Re=/^ ([0-9]{15}) | ( [0-9a-z] {18})) $/gi;
msg = "ID card format error"
Return Regexpcheck (RE,GETO,MSG)
}

Verifying e-mail

Program code

function Checkemail (Geto)
{
Re=/^ ([\.\w-]) {2,30}@ ([\w-]) {3,30} (\. [\w]) {2,4}) {1,2}/gi
msg = "Mailbox Format error"
Return Regexpcheck (RE,GETO,MSG)
}

Verify 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)
}

Verifying phone numbers

Program code

function Checkphone (Geto)
{
Re=/^ ([\d]) {2,5}-([\d]) {3,14}/gi
msg = "Phone format error \r\n\r\n Area number and telephone number in the middle please use"-"lattice open, for example: 029-82303721"
Return Regexpcheck (RE,GETO,MSG)
}

Verify your phone number

Program code

function Checkmobile (Geto)
{
Re=/^ (\+?[ 0-9]{0,3}13[0-9]{9}) $/gi
msg = "Phone format error"
Return Regexpcheck (RE,GETO,MSG)
}

Verifying the Checksum code

Program code

function Checkvcode (Geto)
{
Re=/^ (\d{4}) $/gi
msg = "Bad Check code format"
Return Regexpcheck (RE,GETO,MSG)
}
Verify Number 1
function CheckNumber (Geto)
{
Re=/^\d+$/gi
msg = "Wrong format, please enter 0~9 number"
Return Regexpcheck (RE,GETO,MSG)
}
Verify Number 2
function Checknumbertext (GET0,MSG0)
{
Re =/^\d+$/gi
msg = Msg0
Return Regexpcheck (RE,GET0,MSG0)
}