Poradte mi pls co to je – JavaScript, AJAX, jQuery – Fórum – Programujte.com

nekde sem sehnal tenhle script poradili byste mi nekdo co to je nebo coto dela docela by me to zajimalo

function doStazeni()
{
setTimeout( "refresh()", 2*1000 );
}

function refresh()
{
window.location.href = sURL;
}

/*
-------------------------------------------------------------------------
JavaScript Form Validator
Version 2.0.2
Copyright 2003 JavaScript-coder.com. All rights reserved.
You use this script in your Web pages, provided these opening credit
lines are kept intact.
The Form validation script is distributed free from JavaScript-Coder.com

You may please add a link to JavaScript-Coder.com,
making it easy for others to find this script.
Checkout the Give a link and Get a link page:
http://www.javascript-coder.com/links/how-to-link.php

You may not reprint or redistribute this code without permission from
JavaScript-Coder.com.

JavaScript Coder
It precisely codes what you imagine!
Grab your copy here:
http://www.javascript-coder.com/
-------------------------------------------------------------------------
*/
function Validator(frmname)
{
this.formobj=document.forms[frmname];
if(!this.formobj)
{
alert("BUG: couldnot get Form object "+frmname);
return;
}
if(this.formobj.onsubmit)
{
this.formobj.old_onsubmit = this.formobj.onsubmit;
this.formobj.onsubmit=null;
}
else
{
this.formobj.old_onsubmit = null;
}
this.formobj.onsubmit=form_submit_handler;
this.addValidation = add_validation;
this.setAddnlValidationFunction=set_addnl_vfunction;
this.clearAllValidations = clear_all_validations;
}
function set_addnl_vfunction(functionname)
{
this.formobj.addnlvalidation = functionname;
}
function clear_all_validations()
{
for(var itr=0;itr < this.formobj.elements.length;itr++)
{
this.formobj.elements[itr].validationset = null;
}
}
function form_submit_handler()
{
for(var itr=0;itr < this.elements.length;itr++)
{
if(this.elements[itr].validationset &&
!this.elements[itr].validationset.validate())
{
return false;
}
}
if(this.addnlvalidation)
{
str =" var ret = "+this.addnlvalidation+"()";
eval(str);
if(!ret) return ret;
}
return true;
}
function add_validation(itemname,descriptor,errstr)
{
if(!this.formobj)
{
alert("BUG: the form object is not set properly");
return;
}//if
var itemobj = this.formobj[itemname];
if(!itemobj)
{
alert("BUG: Couldnot get the input object named: "+itemname);
return;
}
if(!itemobj.validationset)
{
itemobj.validationset = new ValidationSet(itemobj);
}
itemobj.validationset.add(descriptor,errstr);
}
function ValidationDesc(inputitem,desc,error)
{
this.desc=desc;
this.error=error;
this.itemobj = inputitem;
this.validate=vdesc_validate;
}
function vdesc_validate()
{
if(!V2validateData(this.desc,this.itemobj,this.error))
{
this.itemobj.focus();
return false;
}
return true;
}
function ValidationSet(inputitem)
{
this.vSet=new Array();
this.add= add_validationdesc;
this.validate= vset_validate;
this.itemobj = inputitem;
}
function add_validationdesc(desc,error)
{
this.vSet[this.vSet.length]=
new ValidationDesc(this.itemobj,desc,error);
}
function vset_validate()
{
for(var itr=0;itr<this.vSet.length;itr++)
{
if(!this.vSet[itr].validate())
{
return false;
}
}
return true;
}
function validateEmailv2(email)
{
// a very simple email validation checking.
// you can add more complex email checking if it helps
if(email.length <= 0)
{
return true;
}
var splitted = email.match("^(.+)@(.+)$");
if(splitted == null) return false;
if(splitted[1] != null )
{
var regexp_user=/^"?[w-_.]*"?$/;
if(splitted[1].match(regexp_user) == null) return false;
}
if(splitted[2] != null)
{
var regexp_domain=/^[w-.]*.[A-Za-z]{2,4}$/;
if(splitted[2].match(regexp_domain) == null)
{
var regexp_ip =/^[d{1,3}.d{1,3}.d{1,3}.d{1,3}]$/;
if(splitted[2].match(regexp_ip) == null) return false;
}// if
return true;
}
return false;
}
function V2validateData(strValidateStr,objValue,strError)
{
var epos = strValidateStr.search("=");
var command = "";
var cmdvalue = "";
if(epos >= 0)
{
command = strValidateStr.substring(0,epos);
cmdvalue = strValidateStr.substr(epos+1);
}
else
{
command = strValidateStr;
}
switch(command)
{
case "req":
case "required":
{
if(eval(objValue.value.length) == 0)
{
if(!strError || strError.length ==0)
{
strError = objValue.name + " : Mus�te vyplnit";
}//if
alert(strError);
return false;
}//if
break;
}//case required
case "maxlength":
case "maxlen":
{
if(eval(objValue.value.length) > eval(cmdvalue))
{
if(!strError || strError.length ==0)
{
strError = objValue.name + " : "+cmdvalue+" znaku maximalne ";
}//if
alert(strError + "n[soucasna velikost = " + objValue.value.length + " ]");
return false;
}//if
break;
}//case maxlen
case "minlength":
case "minlen":
{
if(eval(objValue.value.length) < eval(cmdvalue))
{
if(!strError || strError.length ==0)
{
strError = objValue.name + " : " + cmdvalue + " znaku minimalne ";
}//if
alert(strError + "n[soucasna velikost = " + objValue.value.length + " ]");
return false;
}//if
break;
}//case minlen
case "alnum":
case "alphanumeric":
{
var charpos = objValue.value.search("[^A-Za-z0-9]");
if(objValue.value.length > 0 && charpos >= 0)
{
if(!strError || strError.length ==0)
{
strError = objValue.name+": Only alpha-numeric characters allowed ";
}//if
alert(strError);
return false;
}//if
break;
}//case alphanumeric
case "num":
case "numeric":
{
var charpos = objValue.value.search("[^0-9]");
if(objValue.value.length > 0 && charpos >= 0)
{
if(!strError || strError.length ==0)
{
strError = objValue.name+": Only digits allowed ";
}//if
alert(strError);
return false;
}//if
break;
}//numeric
case "alphabetic":
case "alpha":
{
var charpos = objValue.value.search("[^A-Za-z]");
if(objValue.value.length > 0 && charpos >= 0)
{
if(!strError || strError.length ==0)
{
strError = objValue.name+": Only alphabetic characters allowed ";
}//if
alert(strError + "n [Error character position " + eval(charpos+1)+"]");
return false;
}//if
break;
}//alpha
case "alnumhyphen":
{
var charpos = objValue.value.search("[^A-Za-z0-9-_]");
if(objValue.value.length > 0 && charpos >= 0)
{
if(!strError || strError.length ==0)
{
strError = objValue.name+": characters allowed are A-Z,a-z,0-9,- and _";
}//if
alert(strError + "n [Error character position " + eval(charpos+1)+"]");
return false;
}//if
break;
}
case "email":
{
if(!validateEmailv2(objValue.value))
{
if(!strError || strError.length ==0)
{
strError = objValue.name+": Vlozte prosim platny email! ";
}//if
alert(strError);
return false;
}//if
break;
}//case email
case "lt":
case "lessthan":
{
if(isNaN(objValue.value))
{
alert(objValue.name+": Mus� b�t cislo!");
return false;
}//if
if(eval(objValue.value) >= eval(cmdvalue))
{
if(!strError || strError.length ==0)
{
strError = objValue.name + " : value should be less than "+ cmdvalue;
}//if
alert(strError);
return false;
}//if
break;
}//case lessthan
case "gt":
case "greaterthan":
{
if(isNaN(objValue.value))
{
alert(objValue.name+": Should be a number ");
return false;
}//if
if(eval(objValue.value) <= eval(cmdvalue))
{
if(!strError || strError.length ==0)
{
strError = objValue.name + " : value should be greater than "+ cmdvalue;
}//if
alert(strError);
return false;
}//if
break;
}//case greaterthan
case "regexp":
{
if(objValue.value.length > 0)
{
if(!objValue.value.match(cmdvalue))
{
if(!strError || strError.length ==0)
{
strError = objValue.name+": Invalid characters found ";
}//if
alert(strError);
return false;
}//if
}
break;
}//case regexp
case "dontselect":
{
if(objValue.selectedIndex == null)
{
alert("BUG: dontselect command for non-select Item");
return false;
}
if(objValue.selectedIndex == eval(cmdvalue))
{
if(!strError || strError.length ==0)
{
strError = objValue.name+": Please Select one option ";
}//if
alert(strError);
return false;
}
break;
}//case dontselect
}//switch
return true;
}
/*
Copyright 2003 JavaScript-coder.com. All rights reserved.
*/

function openpict(par, w, h) {
url = "shop_images/vetsi/"+par+".jpg";
re = ///gi;
newstr = par.replace(re, "");
re = /./gi;
newstr = newstr.replace(re, "");
h = h + 50;
dialogWindow=window.open(url, newstr, 'width = '+w+', height = '+h+', innerWidth = '+w+', innerHeight = '+h+',resizable = 1, status = 0, toolbar = 0, titlebar = 0, menubar = 0, location = 0, scrollbars = 0');
}

To je validator formularu :) Ale bez nejaky dokumentace se to bude pouzivat dost tezko.

[podtrzene]Použití validátoru formulářů v dokumentu HTML: [/podtrzene]
1. Na závěr části HEAD se vloží buď JS kód validátoru
nebo odkaz na externí soubor: <script src="gen_validatorv2.js" type="text/javascript"></script></head>
2. V části BODY následuje za definicí formuláře SCRIPT ve kterém:
a) Vytvoříme objekt validator (předává se hodnota NAME formuláře).
b) Provádíme asociace prvku formuláře (= NAME) a deskriptoru validace(=řetězec určující typ kontroly prvku);
každému formulářovému prvku může být přiřazeno 0,1 či více kontrol

  <FORM NAME="MujForm">

       <input type="text" NAME="Jmeno">

       <input type="text" NAME="Email">

       <input type="text" NAME="Telefon">

       <textarea             NAME="Adresa">

       <select                NAME="Stát">

      ...............atd.....................

  </FORM>

  <SCRIPT>

  

var frmvalidator  = new Validator("MujForm")                //............................................ 2.a)

//.....opakovaně asociujeme:     frmvalidator.addValidation(PRVEK_NAME,VALID_DESKRIPTOR) ................. 2.b)

//-------------------------------------------------------------------------------------------

frmvalidator.addValidation( "Jmeno", "alpha")          // alpha =pouze písmena   // req =nutno zadat

frmvalidator.addValidation( "Jmeno", "req", "Nezadali jste JMÉNO")              // 3.volitelný parametr se vypíše 

frmvalidator.addValidation( "Jmeno", "maxlen=20", "Maximální délka JMÉNA je 20 znaků")              // při chybě 

frmvalidator.addValidation( "Email",  "email") 

frmvalidator.addValidation( "Telefon", "num")

  ...................atd.....................

<html>

<head>

<title>Example for Validator</title>

<script language="JavaScript" src="http://www.javascript-coder.com/html-form/gen_validatorv2.js" type="text/javascript"></script>

</head>

<body>

<form action="" name="myform" >

<table cellspacing="2" cellpadding="2" border="0">

<tr>

  <td align="right">First Name</td>

  <td><input type="text" name="FirstName"></td>

</tr>

<tr>

  <td align="right">Last Name</td>

  <td><input type="text" name="LastName"></td>

</tr>

<tr>

  <td align="right">EMail</td>

  <td><input type="text" name="Email"></td>

</tr>

<tr>

  <td align="right">Phone</td>

  <td><input type="text" name="Phone"></td>

</tr>

<tr>

  <td align="right">Address</td>

  <td><textarea cols="20" rows="5" name="Address"></textarea></td>

</tr>

<tr>

  <td align="right">Country</td>

  <td>

  <SELECT name="Country">

<option value="" selected>{choose yours}

<option value="008">Albania

<option value="012">Algeria

<option value="016">American Samoa

<option value="020">Andorra

<option value="024">Angola

<option value="660">Anguilla

<option value="010">Antarctica

<option value="028">Antigua And Barbuda

<option value="032">Argentina

<option value="051">Armenia

<option value="533">Aruba 

 </SELECT>

</td>

</tr>

<tr>

  <td align="right"></td>

  <td><input type="submit" value="Submit"></td>

</tr>

</table>

</form>

<script language="JavaScript" type="text/javascript">

 var frmvalidator = new Validator("myform");

 frmvalidator.addValidation("FirstName","req","Please enter your First Name");

 frmvalidator.addValidation("FirstName","maxlen=20","Max length for FirstName is 20");

 frmvalidator.addValidation("FirstName","alpha");

 

 frmvalidator.addValidation("LastName","req");

 frmvalidator.addValidation("LastName","maxlen=20");

 

 frmvalidator.addValidation("Email","maxlen=50");

 frmvalidator.addValidation("Email","req");

 frmvalidator.addValidation("Email","email");

 

 frmvalidator.addValidation("Phone","maxlen=50");

 frmvalidator.addValidation("Phone","numeric");

 

 frmvalidator.addValidation("Address","maxlen=50");

 frmvalidator.addValidation("Country","dontselect=0");

</script>

</body>

</html>