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JavaScript - Getelementbyid In External .js
Hello, I'm sorry if this has been asked before but I've been googling and looking in reference books for the last couple of days and just haven't been able to find an answer.
I'm new to javascript and have just completed my first fully working script to crossfade images and have clickable links to go to a specific image, the code works perfectly when the code is inside of the html document with the elements but when you remove the javascript and put it in a seperate file its unable to get the value of the elements from the html. Is there a way to do this, give the document a alternative src to look in for the elements or something? An example below. Javascript snipit [CODE] imageId = "mainImage"; image = window.document.getElementById(imageId); alert(image); [CODE] image returns null. what I want it to return is the value fro the HTMl document that this file is included in. [CODE] <script type="text/javascript" src="fadeFunctions.js"> </script> </head> <body> <div id="imgHolder" style="position: absolute; top: 200px;"> <div id="topImage" style="position: absolute; top: 0px; left: 0px; z-index: 100;"><img id="mainImg" src="1.png" /></div> [CODE] Thanks for any help or suggestions that you can give. Similar TutorialsHi, I hav linked external js (ext1.js) to my app.html page. Now in the ext1.js, I have a function like [CODE] function onwindowload(){ //Access HTML element and append external js 2 (ext2.js) here }[CODE] //Access HTML element and append external js 2 (ext2.js) here--->I donno how to add external JS here. Even if i add the external JS here, the JS uses document.write fn. which replaces entire page. Please suggest a solution hi, In my code below, I cannot get the setting_id value as it falls outside of the loop. I have just tried to put in the getElementById function but it's not working?! I get the error: missing ) after formal parameters JavaScript from this: Code: function confirmqualification(ID) {
to this: Code: function confirmqualification(document.getElementById('setting_id')) {
HTML from this: Code: <input type="button" name="remove" id="remove" value="Remove" onClick="javascript:confirmqualification('<?php echo $row1['setting_id']?>')" />
to this: Code: <input type="button" name="remove" id="remove" value="Remove" onClick="javascript:confirmqualification()" /> Hello smart people... perhaps someone can figure this one out. I hope it's not a PHP question. I have a form and need to populate FIELD2 with the result of FIELD1. Field one is a dynamic list from a database, where the value is an ID#, but the list shows the name. I want to populat FIELD2 with the name that is chosen, not the id (I can't get anything to work) Here is the code from the 2 fields: FIELD 1: Code: <select name = "" realname = "{#role#}" required="1" exclude = "-1" id = "roleselect">
<option value="-1" selected="selected">Choose</option>
<option value = "{$roles[role].ID}" id="role{$roles[role].ID}">{$roles[role].name}</option>
FIELD 2: Code: <input type="hidden" name="rolename" id="rolename" required="0" realname="rolename" /> Here is the javascript I tried to populate field 2 with the selected option of field 2: Code: function updaterole(){
document.getElementById("rolename").value =document.getElementById("role").value;
I tried using name instead of value for field 1, but that didn't work either. The db just shows empty. thanks for any help! hi quick question, i have 640 hidden html inputs like this but with different names. <input type="hidden" name="b1r1c1" value"some value"> now i want to use document.getElementById('b1r1c1).value = "whatever"; will that work eventhough there is no id on my hidden value. it will be in a hta by the way. thanks Hopefully some of you guys can help. I'm self taught in Javascript so only know little bits here and there (and don't even know if the thread title is labelled right for what I'm doing!) so help would be greatly appreciated. I'm trying to create 4 buttons on a page (buttons shown by "click here to view c1, c2" etc.) however after I've clicked one button and the content is showing below, the content from the next button clicked does not show (almost as if it is hidden underneath). I'm looking for a way of showing the content when the button is clicked, but hiding it once another button is clicked so other content is shown. Hopefully this is clear enough. All help, tips or advice will be appreciated. Thankyou. Code: <script type="text/javascript" language="JavaScript"><!--
function InsertContent(tid) {
if(document.getElementById(tid).style.display == "none") {
document.getElementById(tid).style.display = "";
}
else {
document.getElementById(tid).style.display = "none";
}
}
//--></script>
<table width="100%" cellspacing="4" cellpadding="4" border="0" align="center">
<tbody>
<tr>
<td width="25%"><a href="javascript:InsertContent('c1');"> Click to see C1</a></td>
<td width="25%"><a href="javascript:InsertContent('c2');"> Click to see C2</a></td>
<td width="25%"><a href="javascript:InsertContent('c3');"> Click to see C3</a></td>
<td width="25%"><a href="javascript:InsertContent('c4');"> Click to see C4</a></td>
</tr>
</tbody>
</table>
<hr />
<div style="display: none; border: 0px dashed black; background-color: white; color: black; font-weight: bold; padding: 5px; margin: 5px;" id="c1">CONTENT C1
</div>
<div style="display: none; border: 0px dashed black; background-color: white; color: black; font-weight: bold; padding: 5px; margin: 5px;" id="c2">CONTENT C2
</div>
<div style="display: none; border: 0px dashed black; background-color: white; color: black; font-weight: bold; padding: 5px; margin: 5px;" id="c3">CONTENT C3
</div>
<div style="display: none; border: 0px dashed black; background-color: white; color: black; font-weight: bold; padding: 5px; margin: 5px;" id="c4">CONTENT C3
</div>
I am using javascript for adding and removing rows from table as per user require ment like if we press ADDROW button it adds extra row to table and if we pressREMOVEROW it delets the last row.. Now i want to access the data from textbox like this.. var crpt = document.getElementById("itrtr2").value; //no. of rows for(var k=1;k<=crpt;k++) { qtyc = document.getElementById("txtRowc3"+k).value; unit_pricec = document.getElementById("txtRowc5"+k).value; alert('QTYC:'+qtyc+' UPC:'+unit_pricec); cttl = qtyc * unit_pricec; document.getElementById("txtRowc6"+k).value = cttl.toFixed(2); csbttl = csbttl + cttl; } document.getElementById("subttlC").value=csbttl.toFixed(2); it shows the value of textRowc3i in qtyc in alert box but also givs error document.getElementById("txtRowc3"+k) is null.. I tried for this but problem is not solved please help... Thank You... 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 Hello, I need to do this. I have 36 Divs called "contenido1, contenido2, contenido3 etc.) And I want that "onclick" change a property of the css of all of them except 1. I know I can do this manually but its a lot of code lines so I think it would be another option to do ir in a loop. Right now i am using this: Code: div = document.getElementById('contenido1');
div.style.display='block';
div = document.getElementById('contenido2');
div.style.display='none';
div = document.getElementById('contenido3');
div.style.display='none';
div = document.getElementById('contenido4');
div.style.display='none';
....
So in that case I want for example that all the DIVS called "contenido 2 to contenido 36" display: none and only contenido 1 display block. In the next cases would be the same: All the divs called "contenido 1 to contenido 36" display: none except "contenido 2" that i want to display: block. So I can do it like this but are thousands of lines of code... and I am sure there are other more efficient option. Anybody knows how to do that? Probably is a simple question. Thank you!! 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! 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 What I'm trying to get are the tag ids separately after I call the callback function. I've been racking my brain for far too long on this one. Here is a shorter version of what I have. I'm using the array's length to count and break into their own lines. How do i get all 9 id="hover_[index]" separately using my array length? PHP Code: var info = Array("bla_1", "bla_2", "bla_3", "bla_4", "bla_5", "bla_6", "bla_7", "bla_8", "bla_9"); function callback(results, status) { if (status == myStatus) { for (var i = 0; i < results.length; i++) { send(results[i]); } } } function send(info) { document.getElementById('results').innerHTML += "<div id='hover_"+info.length+"'>Something</div>"; hover_target = document.getElementById('hover_'+info.length);// how do i get all 9 hover_[index] separately? someEvent.addDomListener(hover_target, 'mouseover', function() { // do something }); } Thank you so much in advance, Frank 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.. None of my getElementById (or other) references produce anything but "undefined." This occurs in the latest versions of Fx, IE, Chrome, and Safari, so it must be something I am doing but not not seeing here. I have boiled it down to the following without success, and wonder whether there is some add on interaction. Fx 3.6.12 has the problem with this code: <code> <html> <head> <title>This is a test of getElementById</title> </head> <body> <div id="area" name="area_name">xxx</div> <script type="text/javascript"> var divs = document.getElementsByTagName('div'); var msg = ''; msg = 'Divs[0] contains ' + divs[0] + ' with width = ' + divs[0].width + "\n"; msg +='Test area width by id = ' + document.getElementById('area').width + "\n"; msg +='Test area width by name = ' + document.getElementsByName('area_name').width; alert(msg); </script> </body> </html> </code> 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>
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. 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 ) +
"¤tstatus=" + 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 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> 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. 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. |
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