JavaScript - Checking That Array Is Null

Hello,

Can you someone point me to the right script?

I have a text box and would like to see if the value of the input matches the values defined in a JavaScript array.

For example, the JavaScript array will hold five values:

v1 = Tom
v2 = Jerry
v3 = Michael
v4 = Stephanie
v5 = Michelle

If the text box does not equal one of those values, an alert will pop up stating it does not match.

Thanks.

Hi
I am having trouble with a script. I cannot figure out why I get the message:
error: null is null or not an object (In IE8)

The site is: www.rayburns.com

I have check the javascript for the navigation bar and for the rotating images and cannot see what is missing. Not sure what is not being called.
Can someone please help with this.
Thank you in advance!

Hi i have done some reading on the net today because i am getting an error on ie. I did find the javascript twice in my code, once in the header and once here, so i removed it from the header. I also changed to src to the full url.

But i am still getting this and i dont know why. the file is located in the root directory.

Code:

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; SearchToolbar 1.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; msn OptimizedIE8;ENUS)
Timestamp: Sat, 30 Jul 2011 16:03:05 UTC


Message: 'null' is null or not an object
Line: 8
Char: 3894
Code: 0
URI: http://www.mysite.com/swfobject.js

Code:

<script type='text/javascript' src='$CONST_LINK_ROOT/swfobject.js'></script>
<script type='text/javascript'>
var s1 = new SWFObject('player.swf','player','400','300','9');
s1.addParam('allowfullscreen','true');
s1.addParam('allowscriptaccess','always');
s1.addParam('flashvars','file=$CONST_LINK_ROOT/movies/$sql_array->vid_id.flv');
s1.write('preview');
</script>
<embed src='$CONST_LINK_ROOT/flvplayer.swf?file=$CONST_LINK_ROOT/movies/$sql_array->vid_id.flv&autoStart=false' width='175' height='175' quality='high' type='application/x-shockwave-flash' pluginspage='http://www.macromedia.com/go/getflashplayer'></embed>

would appreciate any suggestions thanks.


i was on 1.5 swfobject i did download 2.2 and im guessing all you do is replace the swfobject.js file to upgrade it, but what happened is it gives me this now.

Code:

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; SearchToolbar 1.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; msn OptimizedIE8;ENUS)
Timestamp: Sat, 30 Jul 2011 16:31:08 UTC


Message: 'SWFObject' is undefined
Line: 1283
Char: 1
Code: 0
URI: http://www.mysite/video_admin.php?type=v

i dont mind going back to the old version i just need to get this working and im soooooooo lost lol


ok another update, this is becomming maddening lol. once i have this line in the header php

Code:

<script type='text/javascript' src='$CONST_LINK_ROOT/swfobject.js'></script>

I never have to use it again as long as they header php is included correct?


This is what is driving me nuts, im back on 1.5 and it says its undefined


Code:

but am in not defining it on this line? ---> var s1 = new SWFObject('player.swf','player','400','300','9');


<script type='text/javascript' src='swfobject.js'></script>
<script type='text/javascript'>
var s1 = new SWFObject('player.swf','player','400','300','9');
s1.addParam('allowfullscreen','true');
s1.addParam('allowscriptaccess','always');
s1.addParam('flashvars','file=$CONST_LINK_ROOT/movies/$sql_array->vid_id.flv');
s1.write('preview');
</script>

Another Update. I am back to the original question. null is null or not an object.. in my search i have found this

found a solution. basically Internet Explorer is crappy and doesnt like the setAttribute property so had to change the onchange handler by directly changing the attrbute for the object like so.
object.onchange = function() {}

i have no idea what they means, does that mean i need to change swfobject.js or does that mean i have to change my xml request. and if it is the swfobject i have no clue what they mean or what lines

Hi
I've implemented Busybox on a website to display FLV files in a popup player. This works fine, except for the following error in IE (FF is fine) when I close the popup: 'null' is null or not an object

I think I've narrowed it down to the following block of code, but am stuck as to what to do from here.

Code:

var cl = new Element('img',{
		'styles':{
			width:'24px',
			height:'24px',
			position:'absolute',
			top:'-20px',
			right:'-20px',
			'z-index':'100000'
		},
		'src':'bumpbox/closed.png',
		'id':'closer'
	})

cl.addEvent('click',function(e){
			e = new Event(e).stop();
		
			bg.dispose();
			$(el).getChildren().dispose();
			eff2.start({
			  'width':[maxw,1],
			  'height':[maxh,1],
			  'left': [endleft,middleH],
			  'top':  [endtop, middleV+s]
			 })
		})

The IE error is just giving me line number 1 of the php, but the error, I'm sure, lays in the Javascript.

Many thanks

I know that unlike PHP, NULL in JavaScript must be quoted as a string. Does it matter if you use single or double quote?

I'm guessing this question will be one of the easiest questions ever posted but I'm just not getting this fix. I have a simple Javascript program that calculates a users pace for their run. The inputs are done through an HTML Form.

The user can input hours, minutes, & seconds of their run. Then the distance number & measurment. Then finally the pace desired. I am having some trouble with null values in this program. If I input a 0 in hours and then fill everything out the program works great. 100%! But, if I leave the field blank and hit calculate I get a NaN. I'm guessing I need some kind of statement like if this value is null set it to zero but I am not having any luck with exactly what kind of syntax I need. So here is the code, again not very complex, any help would be greatly appreciated!


function calculateTime(){
var time_hour = parseInt(document.getElementById("time_hour").value);
var time_min = parseInt(document.getElementById("time_minute").value);
var time_sec = parseFloat(document.getElementById("time_second").value);
var dist_num = parseFloat(document.getElementById("dist_num").value);
var pace_choice = document.getElementById("pace_choice").selectedIndex;
var dist_choice = document.getElementById("dist_choice").selectedIndex;
var total_sec = (time_hour * 3600) + (time_min * 60) + (time_sec);

// Then I'm guessing my if statement would go here somewhere?

For some reason i'm getting the error of "length is null". Which is from this .

Code:

function display_form(id) {
	//Create some variables
	var html = "";
	var container = "form_container";
	var menu = load_menu(id, false);

	//Get id
	 for ( var i = 0; i < menu.length; i++ ) {  
		alert(i);
	}
	
	http = getHTTPObject();
	http.onreadystatechange = function() {
		if ( http.readyState == 4 && http.status == 200 ) {
			document.getElementById(container).innerHTML = http.responseText;
		} else {
			document.getElemenyById(container).innerHTML = "Loading...";
		}
	}
	http.open( "GET", "includes/forms.php?form=" + id );
	http.send();
		
	//Watch input fields 
	//login_listener();
}/*

Here is the function:
Code:

function load_menu(menu, return_d) {
	//Availible menus
	var data = [];
	data [ 'login' ] = [ 'Login', 'Register', 'Recovery' ];
	data [ 'settings' ] = [ 'Profile', 'Account', 'something' ];
	
	 if (return_d == false) {
		return data[ menu ]; 
	} else {
		//Menu container ID's
		var cons = Array('menuitem1','menuitem2','menuitem3');
	
		for ( var i = 0; i < cons.length; i++ ) {
			document.getElementById(cons[i]).innerHTML += data[ menu ] [ i ];
		}
	}
}

Extra info:
id = login
menu = login

Bonjour all. I am trying to activate a function once an iframe is closed. so i am trying to use: window.opener.pageUpdate(); which i get an error of

Error: window.opener is undefined
Source File: https://web111.secure-secure.co.uk/s...js/thickbox.js
Line: 270

Which lead me to believe that my parent window has not got a name so i used
window.name = "main"; in my parent and window.main.pageUpdate(); in the child and get same kind of error. Could someone please help me out!

On my site I have a Javascript error in my FireBug console:

Year is 'null'

Code:

document.getElementById('year').options[i] = new Option(curr_year-i,curr_year-i);

here is my site:
http://harveys.blueplanetdns.com/harveys-shop/

New problem, taken from another website I posted this on:

Error:
Code:

Error ``user_node[0].firstChild is null'' [x-] in  file ``*url removed*'',  line 63, character 0.

As you can see it says that the value is NULL although it shouldn't be... Here is the JavaScript which the error refers to:
Code:

function manageMessage() {
            if( receiveReq.readyState == 4 ) {  // request complete
                var chat_div = document.getElementById( 'chat' );
                var xmldoc = receiveReq.responseXML;
                var msg_nodes = xmldoc.getElementsByTagName( 'message' );
                var n_msg = msg_nodes.length;
                for( i = 0; i < n_msg; i++ ) {
                    alert(i + "," + n_msg);
                    var user_node = msg_nodes[ i ].getElementsByTagName( 'user' );
                    var time_node = msg_nodes[ i ].getElementsByTagName( 'time' );
                    var text_node = msg_nodes[ i ].getElementsByTagName( 'text' );
                    alert(user_node[0].firstChild.nodeValue);
                    
                    //Display message
                    chat_div.innerHTML += user_node[ 0 ].firstChild.nodeValue + "<br />";
                    chat_div.innerHTML += time_node[ 0 ].firstChild.nodeValue + "<br />";
                    chat_div.innerHTML += text_node[ 0 ].firstChild.nodeValue + "<br /><br />";
                }
            }
        }

And again, the whole script if you want it...


Code:

<script type="text/javascript">
    //Credits//
    //Help: Greg (Gjslick)
    //Code example: http://www.dynamicajax.com/fr/AJAX_Driven_Web_Chat_Backend-271_290_291_296.html
    
        // Declare Global Variables
        var lastMess;
        var sendReq;
        var receiveReq;
        var mTimer;
        
        // Initialize Global Variables (on page load)
        function init() {
            lastMess = 0;
            sendReq = getXmlHttpRequestObject();
            receiveReq = getXmlHttpRequestObject();
            mTimer;
        }
        
        
        function getXmlHttpRequestObject() {
            if( window.XMLHttpRequest ) {
                return new XMLHttpRequest();    // code decent browsers like Firefox, Chrome, Opera, Safari. And IE7+...
                
            } else if( window.ActiveXObject ) {
                return new ActiveXObject( 'Microsoft.XMLHTTP' );    //Code for crap like IE
                
            } else {
                var statusEl = document.getElementById( 'p_status' );
                statusEl.innerHTML = "Status: Could not create XmlHttpRequest Object, please upgrade your browser!";
                
                return null;
            }
        }
        
        function getMessage() {
            //var url = "scripts/get_data.php?uid=<?=$uid?>&m=" + lastMess + "&chat=1";
            var url = "testXMLdoc.xml";
            receiveReq.open("GET",url,true);
            receiveReq.onreadystatechange = manageMessage;
            receiveReq.send( null );
            lastMess++;
        }
        
        function manageMessage() {
            if( receiveReq.readyState == 4 ) {  // request complete
                var chat_div = document.getElementById( 'chat' );
                var xmldoc = receiveReq.responseXML;
                var msg_nodes = xmldoc.getElementsByTagName( 'message' );
                var n_msg = msg_nodes.length;
                for( i = 0; i < n_msg; i++ ) {
                    alert(i + "," + n_msg);
                    var user_node = msg_nodes[ i ].getElementsByTagName( 'user' );
                    var time_node = msg_nodes[ i ].getElementsByTagName( 'time' );
                    var text_node = msg_nodes[ i ].getElementsByTagName( 'text' );
                    alert(user_node[0].firstChild.nodeValue);
                    
                    //Display message
                    chat_div.innerHTML += user_node[ 0 ].firstChild.nodeValue + "<br />";
                    chat_div.innerHTML += time_node[ 0 ].firstChild.nodeValue + "<br />";
                    chat_div.innerHTML += text_node[ 0 ].firstChild.nodeValue + "<br /><br />";
                }
            }
        }
    </script>

And here is the XML file (test doc for now):
Code:

<?xml version="1.0" ?>
<root>
    <message id="1">
        <user></user>
        <text>testing stupid chat thing</text>
        <time>0000-00-00 00:00:00</time>
    </message>
    <message id="2">
        <user></user>
        <text>dsadasfsdfsggsdgrgsdgfd</text>
        <time>2010-04-22 19:17:16</time>
    </message>
</root>

Hello,

I'm working on web apps for a company and unfortunately the websites work in Mozilla, chrom and IE9 but not in IE8.

In IE8 the error message "undefined is null or not an object" is pointing to this line:

temp = val.replace(/-/g, "/");

That line is inside a function. I'm not sure how to troubleshoot this...any help would be appreciated.

I cant figure out why this doesnt work - Firefox says:
Error: document.getElementById("test") is null
Source File: file:///Users/briantoovey/test.html
Line: 10

Code:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Rotating Quotes</title>
</head>
<body>
<script type="text/javascript">
document.getElementById("test").innerHTML = 'eat it';
</script>
<div id="test"></div>
</body>
</html>

Hi, im having a problem loading a webpage inside a frameset. This frameset is inside an iframe.

when i click the link in menu, it creates an iframe that load a frameset page (with two frames), the upper frame loads a webpage, this webpage in the body onLoad calls a javascript and passes a name of a webpage that must load in the other frame, the problem im facing is in the javascript, it returns null.
this is the code.

Code:

function doLoad(url) {
	
      var iFrameContent = document.getElementById('iframeContenido');
	  iFrameContent.document.getElementsByName('statuszone') = url;
	return;
  }

where 'iframeContenido' is the ID of the iframe that loads the frameset.
statuszone is the name tag of the frame where the url must be loaded.
this url is in the same domain.

why is this null?
any suggestions?

thanks in advance!

When looping thru a group of elements and using getNamedItem('itemname').value there are some elements that are going to have a null value for that particular getNamedItem... the problem is that you cannot test this value to see if it's null because it generates an error instead, and the code does not continue: _allnames[_j].attributes.getNamedItem("onchange") is null

You cannot even test it for null like this:
if (_allnames[_j].attributes.getNamedItem("onchange").value != null) { do something }
This will also generate an Error instead of testing to see if it is null.

How do you test getNamedItem for null to avoid this error?

EDIT: It appears that the problem is limited to Firefox. It works fine in IE7, but the error occurs in both FF v3.5.4 and in v3.5.5!

Thanks

In my example below, there are no elements that match, so you should see an alert box that says 'No match', but (using Firebug) you will see that an error is generated when it tries to find the value of onchange in the last input tag.

Code:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
  <meta http-equiv="content-type" content="text/html; charset=windows-1250">
  <meta name="generator" content="PSPad editor, www.pspad.com">
  <title></title>
  <script type="text/javascript">
    function myLoad() {
      //Add some text beside the Zip/Postal Code box
      var _match = false;
      var _cell = 0;
      var _allnames = document.getElementsByName('zip_code'); //Get all the TD tags
      var _len = _allnames.length; //How TD tags are there?
        for (_j=0; _j<_len; _j++) { //Loop thru each child
          _nodetype = _allnames[_j].nodeType;
          _name = _allnames[_j].attributes.getNamedItem('name').value;
          _onchange = _allnames[_j].attributes.getNamedItem('onchange').value;
          _type = _allnames[_j].attributes.getNamedItem('type').value;
          _size = _allnames[_j].attributes.getNamedItem('size').value;
          if (_nodetype == 1) {
            if ( (_name == 'zip_code') && ( _onchange == 'zip_changed();') && (_type == 'text')  && (_size == '10') ) { //Look for these specific things to get the correct node (INPUT tag in this case)
              _match = true;
              alert('Match found');       
              var _old_node = _allnames[_j]; //This is the INPUT tag we were looking for
              var _new_node = document.createTextNode(' Enter NONE if this does not apply'); //This is the text we will add on the end of it
              _allnames[_j].parentNode.insertBefore(_new_node, _old_node.nextSibling); //insertBefore inserts before the element, but using targetElement.nextSibling inserts it after instead (insertAfter is deprecated)!!
            }
          }
        }
      if (_match != true) {
        alert('No match');    
      }
    }
  </script>
  </head>
  <body onLoad="myLoad();">
    <table class="zipncountry" border="1">
      <tr> 
        <td>1</td> 
        <td>2</td> 
        <td>3</td> 
      </tr> 
    </table>
    <br>
    <table border="3">
      <tr>
        <td>4<input type="hidden" value="" ></td>
        <td>5</td>
        <td><input type="text" name="zip_code" value="123" size=11 maxlength=20 onChange="zip_changed();"><input type="hidden" name=zip_code value="321" maxlength=20 ></td> 
      </tr> 
    </table>
    <br>
    <table class="zipncountry" border="5">
      <tr> 
        <td>7</td> 
        <td>8</td> 
        <td>9</td> 
      </tr> 
    </table>
  </body>
</html>