JavaScript - Onmouseover & Getelementbyid; Am I Doing It Right?

I've spent three days trying to figure this out without any luck.
What i am attemping to do is to open an unframed tab using the link from a frame id. I want to be able to enter a js command in the browser on the page then have it open in a new tab unframed or just reload the link unframed. These are the commands i have tried in my browser:


javascript:<a herf="document.getElementById("netlinkx").childNodes[1].src;">

javascript:<a herf="window.location.href=document.getElementById("netlinkx").childNodes[1].src;">

javascript:<a herf=document.getElementById("netlinkx").children[0]>.setAttribute('id','this_one');alert(getFrame("this_one").body.innerHTML);>

and a few others that didn't work.

Hi,
I asked this question in an earlier post where Dormilich asked me to post the code, which I did twice but for some reason it hasn't posted so I'll try with a new thread....

I am passing a variable to a function in a separate .js file using embedded HTML.
I want to use the parameter in a getElementById but I can't get it to work.

Here's my HTML:
Code:

<SCRIPT LANGUAGE="JAVASCRIPT" TYPE="TEXT/JAVASCRIPT"> 
<!--
window.onload = function ()
{
initSlideDownMenu("accordionactivity");
}
//-->
</SCRIPT>

Here's my javascript function. When the first alert pops up I get 'accordionactivity', when the second one pops up I get '[object]' but when the third one pops up I get 'null'.The rest of the function then doesn't work properly either:
Code:

function initSlideDownMenu(slMenuName)
{

alert(slMenuName);
alert(document.getElementById('accordionactivity'));
alert(document.getElementById(slMenuName));

 dhtmlgoodies_slmenuObj = document.getElementById(slMenuName);
 dhtmlgoodies_slmenuObj.style.visibility='visible';
 var mainUl = dhtmlgoodies_slmenuObj.getElementsByTagName('UL')[0];  
 var mainMenuItem = mainUl.getElementsByTagName('LI')[0];
 mainItemCounter = 1;
 while(mainMenuItem){   
  if(mainMenuItem.tagName=='LI'){
   var aTag = mainMenuItem.getElementsByTagName('A')[0];
   var subUl = mainMenuItem.getElementsByTagName('UL');
   if(subUl.length>0){
    mainMenuItem.id = 'mainMenuItem' + mainItemCounter;
    initSubItems(subUl[0],2);
    aTag.onclick = showSubMenu;
    mainItemCounter++;
   }    
  }   
  mainMenuItem = mainMenuItem.nextSibling; 
 }  
 if(location.search.indexOf('mainMenuItemToSlide')>=0){
  var items = location.search.split('&');
  for(var no=0;no<items.length;no++){
   if(items[no].indexOf('mainMenuItemToSlide')>=0){
    values = items[no].split('=');
    showSubMenu(false,document.getElementById('mainMenuItem' + values[1])); 
    initMenuIdToExpand = false;    
   }
  }   
 }else if(expandFirstItemAutomatically>0){
  if(document.getElementById('mainMenuItem' + expandFirstItemAutomatically)){
   showSubMenu(false,document.getElementById('mainMenuItem' + expandFirstItemAutomatically));
   initMenuIdToExpand = false;
  }
 }
 if(expandMenuItemByUrl)
 {
  var aTags = dhtmlgoodies_slmenuObj.getElementsByTagName('A');
  for(var no=0;no<aTags.length;no++){
   var hrefToCheckOn = aTags[no].href;
   if(location.href.indexOf(hrefToCheckOn)==0 && (location.href.length==hrefToCheckOn.length || 

location.href.indexOf('?')==hrefToCheckOn.length)){
    initMenuIdToExpand = false;
    var obj = aTags[no].parentNode;
    while(obj && obj.id!=slMenuName){
     if(obj.tagName=='LI'){       
      var subUl = obj.getElementsByTagName('UL');
      if(initialMenuItemAlwaysExpanded)alwaysExpanedItems[obj.parentNode] = true;
      if(subUl.length>0){        
       objectsToExpand.unshift(obj);
      }
     }
     obj = obj.parentNode; 
    }
    showSubMenu(false,objectsToExpand[0]);
    break;     
   }   
  }
 }
 if(initMenuIdToExpand)
 {
  objectsToExpand = new Array();
  var obj = document.getElementById(initMenuIdToExpand)
  while(obj && obj.id!=slMenuName){
   if(obj.tagName=='LI'){
    var subUl = obj.getElementsByTagName('UL');
    if(initialMenuItemAlwaysExpanded)alwaysExpanedItems[obj.parentNode] = true;
    if(subUl.length>0){      
     objectsToExpand.unshift(obj);
    }
   }
   obj = obj.parentNode; 
  }
  showSubMenu(false,objectsToExpand[0]);
 }
}

Can you help me figure out what I'm doing wrong?
Thank you!

I have a html file and a separate javascript file.

The html file contains: <input type="reset" id = "resetButton" />

I want a message to pop up if the reset button is pressed.

So in the js file I have:
document.getElementById("resetButton").onclick = doAlert;

doAlert is a function that simply does: alert("Do you want to reset?");

I know my separate js file is linked correctly because if I just put in alert("hello"); in the js file then it works. But if I use the document.getElementById thing in the js file, then there is an error. The error, according to the error console, says that "resetButton" is null. Can someone help me? thanks!

btw, I'm totally new to programming...and I need to do this for my homework assignment

I am writing some javascript that when the user clicks on a link, it hides or displays content inside a div tag. I have been trying to add some code that would only allow for one div tag to be displayed at a time.

Here is where I originally got the code (http://www.willmaster.com/library/hi...-to-reveal.php)

Whenever I run this code I get this error:

Code:

Error: document.getElementById(months[x]) is null
Source File: /resources/default.js
Line: 30

This is the JavaScript that runs when the user clicks the link:

Code:

<!--
function accordion(tid) {
var x;
var months = new Array();
months[0]="January";
months[1]="February";
months[2]="March";
months[3]="April";
months[4]="May";
months[5]="June";
months[6]="July";
months[7]="August";
months[8]="September";
months[9]="October";
months[10]="November";
months[11]="December";
for (x in months) {
	document.getElementById((months[x])).style.display = "none";
}
if(document.getElementById(tid).style.display == "none") {
	document.getElementById(tid).style.display = "";
} else {
	document.getElementById(tid).style.display = "none";
}}
//-->

Here is where the javascript is activated from

PHP Code:
<a href=javascript:accordion('$month2');>$month2</a><br />
<div id='$month2' style='display: none';>
Hello $month2
</div> 

Any help would be greatly appreciated! I'm using javascript to create a slideshow of images with thumbnails. The slideshow works fine, the titles show up great, but my problem arises when I try to replace the href source of a div. [larger], specified in the js is supposed to be replacing the current a href source, but it isn't working.

This is the javascript that controls the slideshow:
Code:

var current = 0;

function swapimg( show ){

	var piece = new Array();
	var title = new Array();
	var larger = new Array();
	var meta = new Array();


	piece[0] = '../assets/images/nokia/nokia01.jpg';
	title[0] = '[ One ]';
	larger[0] = '../assets/images/nokia/nokia01_big.jpg';
	
	
	piece[1] = '../images/nokia/nokia02.png';
	title[1] = '[ Two ]';
	larger[1] = '../assets/images/nokia/nokia02_big.jpg';

	piece[2] = '../assets/images/nokia/nokia03.png';
	title[2] = '[ Three ]';
	larger[2] = '../assets/images/nokia/nokia02_big.jpg';

	piece[3] = '../assets/images/nokia/nokia04.png';
	title[3] = '[ Four ]';
	larger[3] = '../assets/images/nokia/nokia02_big.jpg';

	
	document.getElementById( 'featured' ).src = piece[show];
	document.getElementById( 'featured' ).alt = title[show];
	document.getElementById( 'featuretitle' ).innerHTML = title[show];
	document.getElementById( 'featuremeta' ).innerHTML = meta[show];
	document.getElementById( 'featurelarger' ).href = larger[show];
	
	for( i = 0; i < meta.length; i++ ){
		document.getElementById( 'item' + i ).style.opacity = '.5';
	}
	document.getElementById( 'item' + ( show ) ).style.opacity = '.99';
	
	current = ( show );
}

And this is the portion of the html that is supposed to be working with the [larger], but I'm having troubles with:

Code:

<div class="featurelarger"><a href="../assets/images/nokia/nokia01_big.jpg" id="featurelarger" class="thickbox" title="Windowcling" rel="gallery-art" >view larger</a></div>

Any help would be greatly appreciated, thank you in advance!

Hello.

I'm trying to change the text on my page dynamically using getElementById etc. Just not quite sure how to do it.

Code:

<script>

function changeIt() {
document.getElementById('change').innerHTML = '*i want the stuff below here (from 'var' to 'text')*';
}

var Result= ((correct / 5) * 100) + '%';
document.write('<p>Result<b>' + score + '</b></p>');
					
document.write('<p>some text</p>');
</script>


//
<div id = "change">
*all the info I'm going to replace*
</div>

Just need to know how to put the variables and stuff in the 'innerhtml' part?

Thanks.

Hello,
Javascript newbie question. I am trying to write into <p> tags using getElementById(), instead of document.write() which I commented out but it does not work the way I put it. Thanks a lot if you can instruct me!

Code:

<html>
<body>

<script type="text/javascript">
var x;
var mycolors = new Array();
mycolors[0] = "blue";
mycolors[1] = "orange";
mycolors[2] = "green";



for (x=0; x<mycolors.length; x++)
  {
var output = mycolors[x] + "<br />"
document.getElementById("output").innerHTML=output; //instead of document.write(output);
  }
</script>

<p id="output"></>

</body>
</html>

Hi,

I am new to javascript. Been picking up bits and parts but am bumping my head against walls.
Have table with 4 cols and 2 rows - header row and 2nd row with 3 input text boxes and 1 option list. Have an array to adds rows to table when user clicks button-max-3 more rows. Option list not a problem-propagates values. Row 1 - 1st and 2nd input boxes linked to JQuery for datapicker and 4th calls js validation for numeric input.
When user adds row those links are not there-which is what I need. Array cites input boxes with name and iteration of +1 for each added row. Should I use, in the array,
document.getElementById('startdate0'; document.getElementById('startdate1'); etc., or should I use keyword this? And if I use this, how is it applied?
I do not know how to declare these variables for recognition. Tried several methods without success.
Following is array:
Code:

<script language="Javascript" type="text/javascript">
/*<![CDATA[*/
		   
	var new_rows=new Array();
	var row_count=0;

     function addRow()
     {
          var tbl = document.getElementById('ReqDtTbl');
		  new_rows[row_count]=new Array();
          var lastRow = tbl.rows.length;
          var iteration = lastRow;
		  if (lastRow>4){
			  return;}
          var row = tbl.insertRow(lastRow);
		  var cellLeft = row.insertCell(0);
          var textNode = document.createElement('input');          
		  textNode.size = 7;
		  textNode.name = 'startdate' + iteration;		  
          cellLeft.appendChild(textNode); 
		  new_rows[row_count]['cell']=textNode;
          var cellRight = row.insertCell(1);          
          var el = document.createElement('input');          
          el.type = 'text';          
          el.name = 'enddate' + iteration;          
          el.id = 'enddate' + iteration;          
          el.size = 7; 
		  new_rows[row_count]['cell2']=el;
          cellRight.appendChild(el);          
          // the last cell!
          var cellRightSel = row.insertCell(2);          
          var sel = document.createElement('select');          
          sel.name = 'TypeHrs' + iteration;          
          sel.options[0] = new Option('-Select-', '""');
          sel.options[1] = new Option('Comp Time', 'Comp Time');
          sel.options[2] = new Option('Credit Hrs', 'Credit Hrs');
		  sel.options[3] = new Option('Overtime', 'Overtime');
		  sel.options[4] = new Option('Rel Comp', 'Rel Comp');          
          cellRightSel.appendChild(sel);
		  new_rows[row_count]['cell3']=sel;
		  var cellRight = row.insertCell(3);          
          var el = document.createElement('input');          
          el.type = 'text';          
          el.name = 'No. of Hours' + iteration;          
          el.id = 'No. of Hours' + iteration;          
          el.size = 7;         
          cellRight.appendChild(el);
		  
		  new_rows[row_count]['cell']=el;
		  row_count++;
     }
     function removeRow()
     {
          // grab element again
          var tbl = document.getElementById('ReqDtTbl');
          // grab length
          var lastRow = tbl.rows.length;
          // delete last row if there is more than one row
          if (lastRow > 2) tbl.deleteRow(lastRow - 1);
     }
	 /*]]>*/
</script>

Input box for date is:

Code:

<input style="width: 70px" type="text" id="startdate">

Function is:

Code:

<script type="text/javascript">
$(function() {
		$("#startdate").datepicker();
		$("#enddate").datepicker();
		$("#RcompStart").datepicker();
		$("#RcompEnd").datepicker();
	});
</script>

Input for numeric is:

Code:

<input type="text" name="No. of Hours" id="No. of Hours" style="width: 70px;" onblur="checkQuarters(this);" />

And numeric validation function is:

Code:

<script type="text/javascript">
function checkQuarters( fld )
{
    var val = parseFloat(fld.value);
    if ( isNaN(val) || ( val*4 != Math.floor(val*4) ) )
    {
        alert("Value must be a numeric and a multiple of 0.25");
        return false;
    }
    return true;
}
</script>

Thanks - John

Alright so i've been trying to code a layout with multiple 'frames'
. What I usually do is use the following script:

Code:

<center>
<script>
          function changeNavigation(id) 
          {document.getElementById('navigate').innerHTML=document.getElementById(id).innerHTML}
          </script>
          <noembed>
          <body>
          
        
          </noembed>

And then add all the divs which are linked to an imagemap, like this:

Code:

<img src="IMAGE" width="HERE" height="HERE" border="0" usemap="#ImageMap1">
<div style="width:HEREpx; height:HEREpx; position:absolute; left:HEREpx; top:HEREpx; z-index:1; overflow:auto;" 
id="HERE">
Blaa
</div>
<div style="display:none; overflow=none"; id="HERE">
And add as many as I need of these.
</div>
<map name="ImageMap1">
<area shape="HERE" coords="HERE" name="HERE"
onClick="changeNavigation('HERE')">
</map>

This always works fine when I have one 'navigation' frame. However this time I need to code a layout with multiple frames. I have tried starting a new script and linking to a new imagemap to do that. But what it does is it duplicates the image and the divs dont appear when clicking on a 'button'.
This is the layout I am coding
As you can see, each box has its own 'buttons' which should link to a div. I can do it for one of the boxes and its divs, but cant figure out how to do it for the others so it works.

Did my best to make this sound non-confusing. Hopefully someone will be able to help.

Hi Everybody,

I'd be grateful if you could help me out. I need to change the CSS by changing the id when a link is clicked.
The id is in the body tag and by default it is named 'first'. i.e
<body id="first">.
If I click on the link named 'Change id to Second', this should change to <body id="Second">.
If I further click on the link named "Change id to Second" this should change to
<body id="Third">.

My code below works (I have stripped this down to make sense), but only when I click one of the links for the first time. If I am to click the second/ third link, nothing happens:

Code:

<html>
<head>
<script type="text/javascript">
function changeFirst() {
                 document.getElementById('blanky').id  = 'first';
              	 document.getElementById('second').id  = 'first';
		 document.getElementById('third').id   = 'first';
             }
function changeSecond() {
                 document.getElementById('blanky').id = 'second';
              	 document.getElementById('first').id  = 'second';
		 document.getElementById('third').id  = 'second';
             }
function changeThird() {
                 document.getElementById('blanky').id  = 'third';
              	 document.getElementById('first').id   = 'third';
		 document.getElementById('second').id  = 'third';
             }
</script>
</head>
<body id=first><!-- I need to change this id -->
<p>Hello, the id above should change when the following links are clicked</p>
<a  onclick="changeFirst()">Change id to First</a>
<a  onclick="changeSecond()">Change id to Second</a>
<a  onclick="changeThird()">Change id to Third</a>
</body>
</html>

Any help will be greatly appreciated.

Cheers

Hi -
Code:

function EvalSound(soundobj) {// this passes the sound to be played to the java applet embedded in the html file and plays it. see ref: http://www.phon.ucl.ac.uk/home/mark/audio/play.htm
 
  document.getElementById(soundobj).Play();
}

I get a firebug error message 'getElementB...ay is not a function'.

However, this error only occurs on my machine at work where I am running Firefox for U3 (updated to FF 3.5.5) - U3 is a SanDisc flash drive.

When I run the same code on FF 3.5.5 from home there is no error. The code works in all other browsers I've tested (IE6, IE8, Chrome).

The page is http://dermdudes.com/counter/keycounter.html
Please provide feedback if the page does not work for you.

Please help. Thanks, Jim

All,
I have the following code:
Code:

var poststr = "statusupdate=" + encodeURI( document.getElementById("statusupdate").value ) +
"&user_name=" + encodeURI( document.getElementById("user_name").value ) +
"&twitteryes=" + encodeURI ( document.getElementById("twitteryes").checked ) +
"&currentstatus=" + encodeURI( document.getElementById("currentstatus").value );

It seems to be failing on the
Code:

"&twitteryes=" + encodeURI (document.getElementById("twitteryes").checked )

If I remove the part I just showed it works fine. This is the HTML code:
Code:

<input type="checkbox" name="twitteryes" value="yesplease" />

Thanks in advance.

i am trying to pass the Id of a text field so I can validate it. At this point all I want to do is enter some text into the text field and then send that content to an alert box. I think my code should work but I get an alert box that says: "undefined". HELP!
Code:

<html>
<head>
<meta http-equiv=Content-Type content="text/html; charset=ISO-8859-1">
<title>Untitled</title>

<script type="text/javascript">
function verify_score(val1)
{
var temp = document.getElementById(val1)
alert(temp.value)
}
</script>
</head>
<body>

<div id="PageDiv" style="position:relative; min-height:100%; margin:auto; width:200px">
	<form name="scoresheetform" action="">
	<div id="Submitbutton" style="position:absolute; left:52px; top:87px; width:110px; height:33px; z-index:1">
		<input type=submit name="Submitbutton" value="Submit Form" onClick="verify_score()"></div>
	<div id="HomePlayer1Rnd6Pnts" style="position:absolute; left:9.822px; top:37px; width:45px; height:29px; z-index:2">
		<input name="HomePlayer1Rnd6Pnts" onBlur="verify_score('HomePlayer1Rnd6Pnts')" size=3></div>
	<div id="HomePlayer1Rnd7Pnts" style="position:absolute; left:79.822px; top:37px; width:45px; height:29px; z-index:3">
		<input name="HomePlayer1Rnd7Pnts" onBlur="verify_score('HomePlayer1Rnd7Pnts')" size=3></div>
	<div id="HomePlayer1TotalPnts" style="position:absolute; left:146px; top:37px; width:45px; height:29px; z-index:4">
		<input name="HP1 Total Points" size=3></div>
	</form>
</div>
</body>
</html>

I'm working on a web site: http://84.9.221.75/domains/backingtr...usicindex.html

I'm trying to get the Javascript that controls the scrolling text to scroll on both the left and right sides.....right now it only scrolls on the left, due to the use of getElementById() from what i can see....

So I'm trying to make the javascript see all references to the ID in the document, and make the right panel div scroll as well, but I'm not having any luck....

I have a very basic understanding of Javascript, so I need a little help here guys...thanks..

Hi there,

So I got this problem, and can't seem to figure it out myself.
I'm using JS ( no framework ). And that's the whole point of this script, so don't tell me to use one :P

Code:

var i=1;
var x=10; // Number of extraContent linked with extraContainers
for (i=1;i<=x;i++)
  {
	var content = "extraContent" +i;
	var container = "extraContainer" +i;
    document.getElementById(container).appendChild(document.getElementById(content));
  }

The problem here, that the container/content, in the getElementById will not return: extraContainer1/extraContent1

Any suggestions :)

~J