JavaScript - I Get An Error For Setting A Basic Variable?

Hello

I have a php page in which I declared a js variable... right at the top of the page...

<script type="text/javascript">
var tester = 0;
</script>


Later in the page I test this variable...

<script type="text/javascript">

if (tester==1){

do some stuff!!
}

</script>

But I keep getting an error variable _tester undefined


Am I missing something obvious... I am new to js... but this seems really straightforward

Hi,

I am looking for some help with function below, the $date variable will for months 01-09 return a value of 1-9 leaving out the 0 numerator

Code:

function reformatDate($Date)
{

	var $date = $Date;

	months = ["01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12"];
	
	var parts = $date.split("/");
	var m = parts[0];
	for ( var i = 0; i < months.length; i++ )    {
	if (months[i] == m ) { 
	var month = i;
						}
												}

	$date = parts[2] + "-" + (month+1) + "-" + parts[1]; // +1 needs to be appended to month as JavaScript month starts at 0
	
	_log("Date " + $date); //test date is in correct format
	
	return $date;
	
}

so in above example if i pass a date 01/02/2015 it will return 2015-1-02 whereas i want it to return 2015-01-02

for the purposes of the function i need the $date to return 01,02,03 etc also can anyone explain why the zero is dropped before each number?





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01-22-2015, 03:39 PM #2
sunfighter View Profile View Forum Posts

Senior Coder Join Date Jan 2011 Location Missouri Posts 4,830 Thanks 25 Thanked 672 Times in 671 Posts

Problem is he
Code:

	for ( var i = 0; i < months.length; i++ )    {
	if (months[i] == m ) {
		var month = i; // YOU SET THIS TO A SINGLE DIGIT. USE var month = months[i];
	}

I'm having some issues with firefox, chrome seems to work ok. Firebug is giving me an error stating country is not defined. The line it's saying it's on is where the function for an ajax call to populate a select input on page load.

Here's the script that sets up the functions to call and fill the state and city values:
Code:

<script src="/components/com_helloworld/js/request.js">
/****************************************************
* Ajax call to fill city values
****************************************************/
</script>
<script>
function handleOnChange(dd1)
{
  var idx = dd1.selectedIndex;
  var val = dd1[idx].text;
  var par = document.forms["cbcheckedadminForm", "adminForm"];
  var parelmts = par.elements;
  var cb_statesel = parelmts["cb_state"];
  var country = val;
   var directory = ""+document.location;
   directory = directory.substr(0, directory.lastIndexOf('/'));
   Http.get({
        url: "./components/com_helloworld/js/regvalues/states/" +  country + ".php",
        callback: fillcb_state,
        cache: Http.Cache.Get
    }, [cb_statesel]);
}
function fillcb_state(xmlreply, cb_stateelmt)
{
  if (xmlreply.status == Http.Status.OK)
  {
   var cb_stateresponse = xmlreply.responseText;
   var cb_statear = cb_stateresponse.split("|");
   cb_stateelmt.length = 1;
   cb_stateelmt.length = cb_statear.length;
   for (o=1; o < cb_statear.length; o++)
   {
     cb_stateelmt[o].text = cb_statear[o];
   }
  }
  else
  {
   alert("Cannot handle the Ajax call.");
  }
}
	
function handleOnChange2(dd1)
{
  var idx = dd1.selectedIndex;
  var val = dd1[idx].text;
  var par = document.forms["cbcheckedadminForm", "adminForm"];
  var parelmts = par.elements;
  var cb_citysel = parelmts["cb_city"];
  var state = val;
   var directory = ""+document.location;
   directory = directory.substr(0, directory.lastIndexOf('/'));
   Http.get({
        url: "./components/com_helloworld/js/regvalues/" +  state + ".php",
        callback: fillcb_city,
        cache: Http.Cache.Get
    }, [cb_citysel]);
}
function fillcb_city(xmlreply, cb_cityelmt)
{
  if (xmlreply.status == Http.Status.OK)
  {
   var cb_cityresponse = xmlreply.responseText;
   var cb_cityar = cb_cityresponse.split("|");
   cb_cityelmt.length = 1;
   cb_cityelmt.length = cb_cityar.length;
   for (o=1; o < cb_cityar.length; o++)
   {
     cb_cityelmt[o].text = cb_cityar[o];
   }
  }
  else
  {
   alert("Cannot handle the Ajax call.");
  }
}

</script>

And here's how it's being triggered on page load:
Code:

<script>
function addLoadEvent(func) { 
	  var oldonload = window.onload; 
	  if (typeof window.onload != 'function') { 
	    window.onload = func; 
	  } else { 
	    window.onload = function() { 
	      if (oldonload) { 
	        oldonload(); 
	      } 
	      func(); 
	    } 
	  } 
	} 
	 
	addLoadEvent(function() { 
	ajaxFunction(document.getElementById('country').value);
	handleOnChange(country);
	setupDependencies('cbcheckedadminForm', '');
	handleOnChange2(cb_state);

	}); 
</script>

I'm not sure why it says it's not defined as it clearly is.
This error is causing the dependent drop down script to not work in firefox causing the child dropdowns to not hide.

I did notice something odd though, if I remove the doctype line it works ok. I did this as firebug was throwing an error on another page claiming it had a syntax error so obviously something somewhere is messed up.
Code:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php echo $this->language; ?>" lang="<?php echo $this->language; ?>" dir="<?php echo $this->direction; ?>">

When the doctype lines are removed firebug throws this error:
window.document.forms[arguments[i]] is undefined
[Break On This Error] for(var j = 0, e = window.document...ts[i]].elements; j < e.length; ++j) {
in formmanager.js.

Hi,

Using a while loop in a function, I am trying to test an input character against a stored string of characters. I want the function to return the input character only if it is not in the stored string of characters.

The code I've prepared is as follows:

Code:

<SCRIPT language = "JavaScript">

var storedLetters = 'sideways';

function requestLetters(aString)
{
	
	var validLetter ='';
	var inputLetter = window.prompt('Please input a single lower-case letter', '');  
		
	while (storedLetters.indexOf(inputLetter) != -1)
	{
		inputLetter = window.prompt('You have already tried ' + inputLetter + ' . Please try another' +	' letter.');
	}
	validLetter = inputLetter;
	return validLetter;
}
		
requestLetters(storedLetters);
document.write(validLetter);
	
</SCRIPT>

The code works fine if I remove it from the function wrapper but if the function is called I keep getting an error message that the variable validLetter is not defined. Can anyone see why this is the case?
Thanks.

Hi ,,


im trying to access cells in the excel , but when iam using variabel inActiveSheet.Cells(1,k) im getting error "Expected :". Could you please help me. Big Thanks in Advance

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1250" />
<script>
function CreateExcel()
{
var ExcelSheet;
var i=0;
var ExcelApp = new ActiveXObject("Excel.Application");
//ExcelSheet = new ActiveXObject("Excel.Sheet");
//ExcelSheet.Application.Visible = true;
//ExcelSheet.ActiveSheet.Cells(1,1).Value = "C11";
//ExcelSheet.ActiveSheet.Cells(1,2).Value = "C12";
//ExcelSheet.SaveAs("C:\\Book1.xls");
ExcelApp.Visible = false;
var i=1;
for(i=0;i<10;i++)
{
var k=i;
document.write(ExcelApp.Workbooks.Open("C:\\wiki estimation.xls").ActiveSheet.Cells(1,k).Value);
}
ExcelApp.Quit();
//ExcelSheet.Application.Quit();
}
</script>
<input type=button name=mybutton value=ExcelSheet onclick="CreateExcel()">
</head>

<body>
</body>
</html>

Hi,

I have a programing problem that have been around for ages. I have search on google using several expressions and words and after hours of digging i'm still unable to do it.

I would like to get a value from a HTML page hosted remotely with an inconstant value. Then define this value and name as a javascript variable and apply or show in my page.

Thanks for all the help

P.S. Is there any way to make a domain lookup in javascript? I mean a user enters a domain and the script converts to an ip and shows to the user. If not thanks, probably it can only be done in the server side...

Hi!
I have a javascript in the head of the document which has a variable named "ref2" ... ref2 is already working as I can see its value working in another function.
I need to send this variable as the value of a hidden field in the form which is in the body of the document.

This is my JavaScript Code:
Code:

function WriteContactFormStatement1 () { 
var ContactFormValue = ref2; 
document.write('<input type="hidden" name="UReferrersName" value="' + ContactFormValue + '" />'); 
} 
var WriteContactFormStatement = WriteContactFormStatement1 ();

And at the end of my form, before the submit button, I have the following code:
Code:

<!-- START -- Javascript to print the statement for UReferrersName -->
<script language="JavaScript" type="text/JavaScript">
//WriteContactFormStatement();
document.write (WriteContactFormStatement); 
</script>
<!-- End -- Javascript to print the statement for UReferrersName -->

When I execute the form, it doesn't work the way it should, plus, gives me a word "undefined" next to the "Submit" button .....

Please help !...

- Xeirus.

I don't know how I should do ?

Quote:
<html>
<head>
<script type="text/javascript">
function add(a,b){
y=a+b
return y
}
var aaa = add(one,two) //one needs to get somehow get the value of yil, in this case 10
var one = function reas(){i=10;if(i<10){yil = 15}; else{yil = 10; yil = one;};
var two = 20;
document.write(y)
</script>
</head>
</html>
also why doesn't this work?

Quote:
<html>
<head>
<script type="text/javascript">
function adder(a,b){
var k=a+b;
return k
}
var hes=adder(5,kol);
kol=40;
alert(hes);
</script>
</head>
</html>
you cannot have variables in callback functions?

First post on the forum... I'm brand new to Javascript and I'm teaching myself using the Headfirst HTML5 book. One of the exercises early in the book is asking me to create a musical playlist where I can add songs that will show up on the screen and also be added to the DOM. However, I'm not able to get it to work or see where my error lies. Any feed back would be great.

Here's my code:

Code:

<!doctype html>

<html lang="en">

<head>

	<title>Webville Tunes</title>
	<meta charset = "utf-8">
	<script>
		
		function init()	{
		var button = document.getElementById("addButton");
		button.onclick = handleButtonClick;
		window.onload =  init;
}
		function handleButtonClick()	{
		var textInput = document.getElementById("songTextInput");
		var songName = textInput.value;
		var li = document.createElement("li");
			li.innerHTML= songName;
		var ul = document.getElementById("playlist");
			ul.appendChild(li);
	
	alert ("Button was clicked!");
	}
	
	</script>
	
	<link rel = "stylesheet" href="playlist.css">

</head>

<body>

	<form>
		<input type="text" id="songTextInput" size="40" placeholder="Song name">
		<input type="button" id="addButton" value="Add Song">
	</form>
	
	<ul id="playlist">
	
	</ul>

</body>

</html>

Can't seem to delete.

Hi and hope someone can help.

I'm setting up a fictitious shopping page which uses cookies to remember what a user has selected. The products are photographs that the user can select either framed or unframed versions and I'm trying to put a confirmation box if the user actually requests framed and unframed versions of the same photograph.

The code I'm using actually worked before I tried to add this extra functionality but I can't work out how to test for this extra bit.

Here's my code and it sets cookies with names as either lulworth01 for the unframed version or lulworth01f for the framed version. The bits that work are in black and my extra code for this test is in red.

Any help would be appreciated.
Thanks
Rog

Code:

  function getCookie(name)
  {
	  var index = cart.indexOf(name + "=");
	  if(index == -1)
	  return null;
	  index = cart.indexOf("=", index) +1;
	  var endstr = cart.indexOf(";",index);
	  if (endstr == -1) endstr = cart.length;
	  return unescape(cart.substring(index, endstr));
  }
function setCookie(name)
{
	 if ((name.charAt(name.length-1)='f') && (getCookie(name.substring(0,10))!=null)) {
	confirm("You seem to have placed orders for both a mounted and framed image of the same photograph.\n\nIs that OK?");
	} else { 
	alert("Thank you.\n\nYour basket has been updated.");
	x=parseInt(getCookie(name)) || 0;
	y=x+1;
	var today = new Date();
	var expiry = new Date(today.getTime()+28*24*60*60*1000); // plus 28 days
	document.cookie=name+"="+y+";expires="+expiry.toGMTString();
	cart = document.cookie;
	 } 
}

I cannot get the cookie to save, I'm pretty new at web designing in general.
If you could, the name of the cookie be cirulcook, also any advice you would have for me would be great!






Code:

<script><!--
function SETcookie(){
document.cookie="Selected="+document.getElementById('myList').selectedIndex;
}
function GETcookie(){
if (document.cookie){
eval(document.cookie);
document.getElementById('myList').selectedIndex=Selected;
}}// --></script>


</head>



<body onLoad="GETcookie()">
<select id="myList" onChange="SETcookie()">

<option value="1">Option 1</option> 
<option value="2">Option 2</option>
<option value="3">Option 3</option>
<option value="4">Option 4</option>
</select>

Hi and hope someone can help,

I'm reading a book on Javascript and I've been doing their tutorial on getting and setting cookies. Trouble is my code, and their supplied sample, don't work. It is supposed to display a very simple page with an image. When you click the image it is supposed to open up a new (very simple) page.

Your help resolving this is greatly appreciated.
My thanks,
R
Code follows...

Code:

<html>
<head>
	<title>main page</title>
<script language=JavaScript>

var lastUpdated = new Date("Tue, 28 Dec 2010");

function getCookieValue(cookieName)
{
	var cookieValue = document.cookie; 
	var cookieStartsAt = cookieValue.indexOf(" " + cookieName + "=");  
	
	if (cookieStartsAt == -1) 
	{
		cookieStartsAt = cookieValue.indexOf(cookieName + "="); 
	}
	
	if (cookieStartsAt == -1)
	{
		cookieValue = null;
	}
	else
	{
	cookieStartsAt = cookieValue.indexOf("=", cookieStartsAt) + 1;
	var cookieEndsAt = cookieValue.indexOf(";", cookieStartsAt);
	if (cookieEndsAt == -1)
	{
		cookieEndsAt = cookieValue.length;
	}
	cookieValue = unescape(cookieValue.substring(cookieStartsAt,cookieEndsAt));
}

return cookieValue;
}

function setCookie(cookieName, cookieValue, cookiePath, cookieExpires)
{
	cookieValue = escape(cookieValue);
	
	if (cookieExpires == "")
	{
		var nowDate = new Date();
		nowDate.setMonth(nowDate.getMonth() + 6);
		cookieExpires = nowDate.toGMTString();
	}
	
	if (cookiePath != "")
	{
		cookiePath = ";Path=" + cookiePath;
	}
	
	document.cookie = cookieName + "=" + cookieValue + ";expires=" + cookieExpires + cookiePath;
}
</script>
</head>

<body>
<h2 align=center> Welcome to my website </h2>
<br><br>
<center>
<script>

var lastVisit = getCookieValue("Last Visit"); 
if (lastVisit != null) 
{
	lastVisit = new Date(lastVisit); 
	if (lastVisit < lastUpdated) 
	{
		document.write("<a href=\"WhatsNew.htm\">");
		document.write("<img src=\"new.jpg\" border=0></a>");
	}
}

var nowDate = new Date();
setCookie("LastVisit", nowDate.toGMTString(),"","") 
</script>
</center>
</body>
</html>

Hello,

I need your help.

I have the following drop-down box as an example:

[== FRUITS ==]
apples
oranges
pairs
kiwi
lemon

How can I use the code below to set the value of the drop down without knowing its value number (3)?

document.getElementById('BOX1').value = 'pairs'

Much thanks and appreciation for everyones help.

Cheers,

J

Hi all, this is my first attempt at JavaScript code. I'm trying to write code for an Adobe Acrobat form. Here is my situation: I have several boxes, all containing numbers such as 2014, 08, and 000000000. I want to concatenate them all into one long number like 080000000002014. I've looked at a ton of sample code, but nothing I try seems to work. Any help is greatly appreciated.