JavaScript - Using "id" Attribute To Access Any Element On A Page

I have this code in a .js file:

<code>
function addElement() {
addbranch();
}


function IfElseActivity(element) {
this.element = element
var innerBar=document.createElement("DIV")
innerBar.className="bar"
innerBar.style["width"]=100+"%"
innerBar.style["heigth"]=28+"px"
//innerBar.innerHTML = "<p>"+item.id+"</p>"
innerBar.innerHTML = "<DIV id='"+element.id+"_id' class='idlabel'>"+element.id+"</DIV>"
element.appendChild(innerBar)
this.group = Quanticks.drag().createSimpleActivity(element, innerBar)
this.Branches = new Array()
this.Properties = new Array()
this.ActWidth = 360
this.BlockWidth = 160
this.noResizeFlag = false
this.noBranchResizeFlag = false
}

IfElseActivity.GetToolboxIcon = function()
{
return "/images/ifelse.GIF";
}

IfElseActivity.prototype = {
Initialize : function()
{
this.header = document.createElement("img")
this.header.src = "images/ifelsehead.GIF"
this.header.setAttribute("width", "268");
this.header.setAttribute("height", "49");
this.header.onclick = function() {addElement();};
this.element.appendChild(this.header)
this.table = document.createElement("table")
this.tablebody = document.createElement("tbody")
this.tablerow = document.createElement("tr")
this.tablebody.appendChild(this.tablerow)
this.table.appendChild(this.tablebody)
this.element.appendChild(this.table)
this.table.setAttribute("border", "0");
this.addBranch()
this.addBranch()
this.footer = document.createElement("img")
this.footer.src = "images/ifelsefoot.GIF"
this.footer.setAttribute("width", "268");
this.footer.setAttribute("height", "49");
this.element.appendChild(this.footer)
},

addBranch : function() {
var cell = document.createElement("td");
var branch=document.createElement("DIV")
branch.className="SequenceActivity"
var branchConnector=document.createElement("DIV")
branchConnector.className="connector"
var innerImg=document.createElement("IMG")
innerImg.src="images/connector.gif"
branchConnector.appendChild(innerImg)
connectors[connectors.length] = branchConnector
branch.appendChild(branchConnector)
cell.appendChild(branch)
this.tablerow.appendChild(cell)
cell.setAttribute("vAlign","top")
branch.onresize=BranchResize
branch.name = getNewId("IfElseBranchActivity");
this.Branches[this.Branches.length] = branch
return branch;
},
</code>

This code creates a kind of ifelse figure on a page with two braches. This works. However, when "this.header.onclick" is clicked an extra branche must be added. Obviously my function does not work. Is the a way to get this working? I would really like to use the original addbranch function

this is not the first time i have run into a situation that has caused me to go "i wish there was some 'onload' event for this div#products so i can execute renderProducts() without waiting for the page to load completely"

i dont want to wait for the DOMContentLoaded event, because that causes an annoying restyling of whatever modifications are made by script after the parent containers have already been rendered.

it seems like there is no good solution to this so i decided to resort to using inline scripts. eg:
Code:

<div id="products">
  <div id="product_tpl" class="tmplt" style="display:none;">
    <h3>{product.name}</h3>
    <img src="/images/{product.sku}_main.jpg" /><br />
    <p>{product.name}</p>
  </div>
  <script type="text/javascript">renderProducts()</script>
</div>

renderProducts() uses an existing javascript object array and fills the div with products using the product template.

this way the content is filled and rendered instantly, using the same js function-call that will fill that div for AJAX actions like pagination, filtering, etc.

i'm not sure of a better way to do it without having to physically write backend code to replicate the rendering logic. i know that i can just return html from the server for this and ajax calls, but this way i just return data from the server in JSON and let the server take care of the business logic only..more of a web-service model.

any input would be appreciated.

thanks,
Leon

Need to set the width of a Table that is being spit out by this god awful CMS...

please help me...

change the html attribute width!

Hello,
recently I have been to many government websites where I have noticed that the programmer has used window.open() method in JavaScript to link to different pages instead of using <a> tags!

I was just getting curious to know whether it is normal or has it been used due to security concerns(if any, I don't know)?

Any comments?

Hello, I run a online gaming website, and I'm having problems with certain websites iframing our games.

Actually I'm ok with iframing, as long as they include the banner ad located just beneath our games. But often times unscrupulous webmasters will iframe only the game, preventing us from generating any revenue from the banner ad (and costing us additional bandwidth charges).

I'm hoping to find a way to detect the dimensions of the iframe, so that I may dynamically resize the game, in order to include the banner ad within the iframe. Does anybody know how to extract the "height" and "width" attribute values from an <iframe> tag sitting on a different site?

Regards,
Steve

Hi all, I'm having a bit of a problem..

I need to disable the submit button on body onload, and i need to re-enable it when "i agree" is checked.

the problem is, it wont do this..

it literally stays disabled, even after check mark..

code:

Code:

<html>
<head><title>Metal Detecting</title></head>
<body onload="disable()" oncontextmenu="return false;">
<script>
function disable(){
if(document.forms.test.agree.checked == false){
document.forms.test.s1.disabled = true;
}
}

function enable(){
if(document.forms.test.agree.checked == true){
document.forms.test.s1.disabled = false;
}
}
function checkCheckBox(f) {
  if (f.agree.checked == false) {
    alert('You MUST agree to the terms by checking the box above.');
    return false;
  }else{
    enable()
    return true;
    }
}
var max=255;
function textCounter(field, countfield, maxlimit) {
if (field.value.length > maxlimit){ // if too long...trim it!
field.value = field.value.substring(0, maxlimit);
// otherwise, update 'characters left' counter
}else{
countfield.value = maxlimit - field.value.length;
}
}
function submitonce(theform){
//if IE 4+ or NS 6+
if (document.all||document.getElementById){
//screen thru every element in the form, and hunt down "submit" and "reset"
for (i=0;i<theform.length;i++){
var tempobj=theform.elements[i]
if(tempobj.type.toLowerCase()=="submit"||tempobj.type.toLowerCase()=="reset")
//disable em
tempobj.disabled=true
}
}
}
function checkdata(which) {
  var pass=true;
var t1 = document.forms.test;
  for (i=0;i<which.length;i++) {
    var tempobj=which.elements[i];
    if (tempobj.name.substring(0,8)=="required") {
      if (((tempobj.type=="text"||tempobj.type=="textarea")&&
          tempobj.value=='')||(tempobj.type.toString().charAt(0)=="s"&&
          tempobj.selectedIndex==0)) {
        pass=false;
        break;
      }
    }
  }
  if (!pass) {
    shortFieldName=tempobj.name.substring(8,30).toUpperCase();
    alert("The "+shortFieldName+" field is a required field.");
    return false;
  } else {
  return true;
  }
}
function emailCheck (emailStr) {

/* The following variable tells the rest of the function whether or not
to verify that the address ends in a two-letter country or well-known
TLD.  1 means check it, 0 means don't. */

var checkTLD=1;

/* The following is the list of known TLDs that an e-mail address must end with. */

var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;

/* The following pattern is used to check if the entered e-mail address
fits the user@domain format.  It also is used to separate the username
from the domain. */

var emailPat=/^(.+)@(.+)$/;

/* The following string represents the pattern for matching all special
characters.  We don't want to allow special characters in the address. 
These characters include ( ) < > @ , ; : \ " . [ ] */

var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";

/* The following string represents the range of characters allowed in a 
username or domainname.  It really states which chars aren't allowed.*/

var validChars="\[^\\s" + specialChars + "\]";

/* The following pattern applies if the "user" is a quoted string (in
which case, there are no rules about which characters are allowed
and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
is a legal e-mail address. */

var quotedUser="(\"[^\"]*\")";

/* The following pattern applies for domains that are IP addresses,
rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
e-mail address. NOTE: The square brackets are required. */

var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;

/* The following string represents an atom (basically a series of non-special characters.) */

var atom=validChars + '+';

/* The following string represents one word in the typical username.
For example, in john.doe@somewhere.com, john and doe are words.
Basically, a word is either an atom or quoted string. */

var word="(" + atom + "|" + quotedUser + ")";

// The following pattern describes the structure of the user

var userPat=new RegExp("^" + word + "(\\." + word + ")*$");

/* The following pattern describes the structure of a normal symbolic
domain, as opposed to ipDomainPat, shown above. */

var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");

/* Finally, let's start trying to figure out if the supplied address is valid. */

/* Begin with the coarse pattern to simply break up user@domain into
different pieces that are easy to analyze. */

var matchArray=emailStr.match(emailPat);

if (matchArray==null) {

/* Too many/few @'s or something; basically, this address doesn't
even fit the general mould of a valid e-mail address. */

alert("Email address seems incorrect (don't forget to add an @ and a . to your email address!)");
return false;
}
var user=matchArray[1];
var domain=matchArray[2];

// Start by checking that only basic ASCII characters are in the strings (0-127).

for (i=0; i<user.length; i++) {
if (user.charCodeAt(i)>127) {
alert("Ths username contains invalid characters.");
return false;
   }
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
alert("Ths domain name contains invalid characters.");
return false;
   }
}

// See if "user" is valid 

if (user.match(userPat)==null) {

// user is not valid

alert("The username doesn't seem to be valid.");
return false;
}

/* if the e-mail address is at an IP address (as opposed to a symbolic
host name) make sure the IP address is valid. */

var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {

// this is an IP address

for (var i=1;i<=4;i++) {
if (IPArray[i]>255) {
alert("Destination IP address is invalid!");
return false;
   }
}
return true;
}

// Domain is symbolic name.  Check if it's valid.
 
var atomPat=new RegExp("^" + atom + "$");
var domArr=domain.split(".");
var len=domArr.length;
for (i=0;i<len;i++) {
if (domArr[i].search(atomPat)==-1) {
alert("The domain name does not seem to be valid.");
return false;
   }
}

/* domain name seems valid, but now make sure that it ends in a
known top-level domain (like com, edu, gov) or a two-letter word,
representing country (uk, nl), and that there's a hostname preceding 
the domain or country. */

if (checkTLD && domArr[domArr.length-1].length!=2 && 
domArr[domArr.length-1].search(knownDomsPat)==-1) {
alert("The address must end in a well-known domain or two letter " + "country.");
return false;
}

// Make sure there's a host name preceding the domain.

if (len<2) {
alert("This address is missing a hostname!");
return false;
}

// If we've gotten this far, everything's valid!
return true;
}
</script>
Please contact us!<br><br>
*Please note you can submit the form ONLY once. Any double form submissions will be deleted.<br>
<form name="test" id="test" method="POST" onsubmit="return checkdata(this), emailCheck(this.email.value), checkCheckBox(this)" action="send.php">
<div id = "div01" style="width: 100; height: 25;">
  Firstname: <input name="requiredfirstname" id="firstname" type="text" />
  Lastname: <input name="requiredlastname" id="lastname" type="text" />
  Email: <input name="requiredemail" id="email" type="text" /><br /><br />
</div>
<H4>Your statement: </H4>
  <textarea onKeyDown="textCounter(this.form.statement,this.form.counter,max);" onKeyUp="textCounter(this.form.statement,this.form.counter,max);" name="requiredstatement" id="statement" rows="15" cols="40"></textarea><br />
 Characters left: <input readonly="readonly" value="255" size=3 maxlength=3 type="text" name="counter" id="counter"><br/><br />
<textarea name="license" cols="40" rows="15" id="license">Blah!</textarea><br/>
<input name="agree" id="agree" type="checkbox"> I have read & agree to the above<br/>
  <input name="s1" id="s1" value="Submit" type="submit" />&nbsp;<input type="reset" name="rset" value="Reset" /><br/>
</form>
</body>
</html>

if its possible to make it do both in 1 function, please show an example. if you have to use 2 functions, then also show me an example.

ANY help is GREATLY appreciated!

i am trying to make a comment editor with iframe, and want to trigger the change of content inside iframe, the following code cant work.

it is strange because it works fine when i replace them with "keypress" and "blur"

Code:

<iframe id="iframe"></iframe>

<script>

frameobj=document.getElementById('iframe').contentWindow; 

// IE
frameobj.attachEvent('onpropertychange', function(){alert();} );

//FireFox
frameobj.addEventListener('input', function(){alert();} , false);

</script>

I need to do an input text validation which include opening parenthesis and closing parenthesis, what I need to validate is the opening parenthesis match with closing parenthesis. Here is a sample of the entry text:

thisis(test(of(matching(parenthesis)and)if)working

There's one closing parenthesis missing. I would like to warn the user to correct it before submit, but not quite sure how to do it with javascript. Please advice.

Thanks
JT

Hi guys,

I have a JS calculator on my website which is basically a load of radio buttons that the user clicks and as they do so a price is calculated in their view.

At the moment - the price box starts with a blank box but is essentially "0". Then, as the user select an option, the price appears and then starts to calculate when more than 1 is pressed.

All I want to do is have the price start at "300" instead of a blank box or "0". Then the rest of the options calculate onto that. I have tried a variety of ways to achieve it and seem to be missing something! I am pretty new to JS although do have a basic understanding ..... clearly not enough to do this thou! lol

Basically imagine 300 is the initial price. That only gets charged once ...

Here's my code ....


In the <head>

Code:

<script type="text/javascript">

function getRBtnName(GrpName) {
  var sel = document.getElementsByName(GrpName);
  var fnd = -1;
  var str = '';
  for (var i=0; i<sel.length; i++) {
    if (sel[i].checked == true) { str = sel[i].value;  fnd = i; }
  }
  return fnd;   // return option index of selection
// comment out next line if option index used in line above  
//  return str;
} 

function chkrads(rbGroupName) {
  var ExPg = [
	  [0,''], 
	  [100,"1 extra page"], 
	  [200,"2 extra pages"], 
	  [250,"3 extra pages"],
	  [300,"4 extra pages"],
	  [350,"5 extra pages"]
  ];
  var ExEm = [
	  [0,''], 
	  [10,"1 extra email"], 
	  [20,"2 extra emails"], 
	  [30,"3 extra emails"], 
	  [40,"4 extra emails"], 
	  [50,"5 extra emails"]
  ];
  var ImgBun = [
	  [0,''], 
	  [10,"3 extra image"], 
	  [20,"5 extra images"], 
	  [30,"7 extra images"], 
	  [40,"10 extra images"]
  ];
     var rbtnGroupNames = ['extrapages','extraemail','imagebundles'];
  var totalprice = 0;
  var tmp = '';  var items = [];
  for (var i=0; i<rbtnGroupNames.length; i++) {
	tmp = getRBtnName(rbtnGroupNames[i]);
	if (tmp != -1) {
 	 switch (i) {
	  case 0 : totalprice += ExPg[tmp][0]; if (tmp > 0) { items.push(ExPg[tmp][1]); } break;
	  case 1 : totalprice += ExEm[tmp][0]; if (tmp > 0) { items.push(ExEm[tmp][1]); } break;
	  case 2 : totalprice += ImgBun[tmp][0]; if (tmp > 0) { items.push(ImgBun[tmp][1]); } break;
	 } 
	}
  }
  document.getElementById('QUOTED_PRICE').value = totalprice;
  document.getElementById('ITEMS_SELECTED').value = items.join('\n');
  document.getElementById('PRICE_IN_VIEW').innerHTML = totalprice;
}

function validate() {
// add any required validation code here prior to submitting form
  var allOK = true;
// if any errors found, then set 'allOk' to false;
  return false;		
// after testing with validation code, change line above to: return allOK;
}

</script>

And then the <body>

Code:

<form name="radio_buttons_startup" id="radio_buttons_startup">
<!--EXTRA PAGES: -->
<span style="color:#900; font-size:16px">Extra web pages:</span>
<br />
<input type="radio" name="extrapages" value="0" onClick="chkrads('extrapages')"> <b>Not for now</b>
<input type="radio" name="extrapages" value="1" onClick="chkrads('extrapages')"> <b>1</b>
<input type="radio" name="extrapages" value="2" onClick="chkrads('extrapages')"> <b>2</b>
<input type="radio" name="extrapages" value="3" onClick="chkrads('extrapages')"> <b>3</b>
<input type="radio" name="extrapages" value="4" onClick="chkrads('extrapages')"> <b>4</b>
<input type="radio" name="extrapages" value="5" onClick="chkrads('extrapages')"> <b>5</b>

<br /><br />
<span style="color:#900; font-size:16px">Extra email addresses:</span>
<br />
<!-- EXTRA EMAIL ADDRESS: --> 
<input type="radio" name="extraemail" value="0"  onclick="chkrads('extraemail')"><b>Not for now</b>
<input type="radio" name="extraemail" value="11" onClick="chkrads('extraemail')"><b>1</b>
<input type="radio" name="extraemail" value="12" onClick="chkrads('extraemail')"><b>2</b>
<input type="radio" name="extraemail" value="13" onClick="chkrads('extraemail')"><b>3</b>
<input type="radio" name="extraemail" value="14" onClick="chkrads('extraemail')"><b>4</b>
<input type="radio" name="extraemail" value="15" onClick="chkrads('extraemail')"><b>5</b>

<br /><br />
<span style="color:#900; font-size:16px">Image Bundles:</span>
<br />
<!--Image Bundles: -->
<input type="radio" name="imagebundles" value="0"  onclick="chkrads('imagebundles')"><b>Not for now</b>
<input type="radio" name="imagebundles" value="21" onClick="chkrads('imagebundles')"><b>3 images</b>
<input type="radio" name="imagebundles" value="22" onClick="chkrads('imagebundles')"><b>5 images</b>
<input type="radio" name="imagebundles" value="23" onClick="chkrads('imagebundles')"><b>7 images</b>

</form>

Thanks for your help in advance!

Can anyone tell me what code I can add to a webform textarea box that will replace all instances of "\n" with "\\n" when a user pastes in JavaScript like this:

<script language="javascript">
var message = '**\n\n W A I T !\n\n CLICK CANCEL\n TO STAY ON THE CURRENT PAGE.\n\n I HAVE SOMETHING FOR YOU!\n\n**';
var page = 'http://google.com';
</script>
<script language="javascript" src="http://siteactor.com/test.js"></script>

The form is on a .php page. The form posts via a .cgi script. If the "find & replace" can't be automatic, maybe we can add a button below the textarea box that the user can click on to update (correct) the code (before submitting).

I am not a programmer... so any specifics you can give me will be much appreciated. Thank you.

Can someone help me to edit this code...?

I already tried to modify the script in many ways, but it doesn't work, I deleted the lines from the password in the script and also deleted the html to fill the password and do not work.. I dont really know wht to do.. I search online for a script, but i only find "user name and password" scripts, I just want a unlimited user name with no passwords... I dont need any type of security in the page, that is why I choose this script, but I dont need the password login.. .. This script is easy for me because it has HTML , I know there are other script on php, but are to complicated for me...

I know this is very easy, but I dont know Java script, Im learning now..

NOTE: this page has "User name" and "password" to login or redirect to another page.. But I dont need the password option..
I just need the " user name"...
I just want he visitor to Enter his/her "user name" and press login and the website will take him/her to a specific page for this user..
I want to have unlimited "user names" with NO passwords....

Can SOMEONE HELP ME WITH THIS...
======================
Here is the code to edit:
===============================


<!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=utf-8" />
<title>Untitled Document</title>

<SCRIPT LANGUAGE="JavaScript">


<!-- The JavaScript Source -->

<!-- Begin
function Login(){
var done=0;
var username=document.login.username.value;
username=username.toLowerCase();
var password=document.login.password.value;
password=password.toLowerCase();
if (username=="member1" && password=="password1") { window.location="page1.html"; done=1; }
if (username=="member2" && password=="password2") { window.location="page2.html"; done=1; }
if (username=="member3" && password=="password3") { window.location="page3.html"; done=1; }
if (done==0) { alert("Invalid login!"); }
}
// End -->
</SCRIPT>



</head>

<body>

<center>
<form name=login>
<table width=225 border=0 cellpadding=0>
<tr><td colspan=2><center><font size="+2"><b>Members-Only Area!</b></font></center></td></tr>
<tr><td>Username:</td><td><input type=text name=username></td></tr>
<tr><td>Password:</td><td><input type=text name=password></td></tr>
<tr><td colspan=2 align=center><input type=button value="Login!" onClick="Login()"></td></tr>
</table>
</form>
<p>&nbsp;</p>
</center>
<p>
<p>


</body>
</html>

When my page loads, it automatically jumps down as if it were jumping to a named anchor. It's more apparent on longer pages (doesn't replicate if page fills screen). Happening in Win FF/IE/Chrome

Disabling stylish-select.js (from http://www.prismstudio.co.uk/2009/05...x-replacement/ where he used to allow comments but not anymore) fixes it, but I don't know enough Javascript to debug, would really appreciate if somebody could have a look.

Good example at http://studiohodson.com/projects/Bea...restaurant.php
Script is at http://studiohodson.com/projects/Bea...lish-select.js

Thank you thank you!

Hello ,

here is my code(which is not working on my problem) i want to remove anchor tag(href="a") will u please help....
Code:

<html>
<head><title>Welcome to DevForum</title></head>
<script language="javascript" type="text/javascript">
function Remove()
{
    var anchor = document.getElementsByTagName("a");
    var i;
    for(i=0;i<anchor.length;i++)
    {
        var anc=anchor.item(i);
        var href=anc.attributes.getNamedItem("href");
        if (href.value == "a")
        {
               anchor.item(i).attributes.getNamedItem("href").value = "";          
        }
    }
}
</script>
<body onload="Remove()">
<h1>Welcome</h1>
<a href="b">b</a>
<a href="a">a</a>

</body>
</html>

Thanks in Advance....

It works in FF but i can seem to find what the issue is here is the code

Code:

<script type="text/javascript">//<![CDATA[
	window.addEvent('domready',function(){

new viewer($$('#box1 img)'),{
			mode: 'alpha',
			interval: 5000
			}).play(true);
		
	});
	//]]>
    </script>
<script type="text/javascript">                                        
<!--  
// When DOM is ready
$(document).ready(function(){

// ------- Submit First Form -------

$("#contact").submit(function(){

var str = $(this).serialize();

   $.ajax({
   type: "POST",
   url: "contact.php",
   data: str,
   success: function(msg){
    
$("#note").ajaxComplete(function(event, request, settings){

		if(msg == 'OK') // Message Sent? Show the 'Thank You' message and hide the form
		{
			result = '<div class="notification_ok">Your message has been sent. Thank you!</div>';
$("#fields").hide();
		}
			else
		{
			result = msg;
		}

		$(this).html(result);

		});

}

 });

return false;

});
 this is line 64 ->  </script>

The error is Syntax error code0 line:64 char:1 . Please if anyone can help.

Hi guys what i'm trying to do without sucess , can't find anything on google.. Is trying to arrange a button to do a "CTRL+T" (Select all) effect in the HTML i'm currently viewing. Is this possible in Javascript?

I dont want to select the text in a textbox ! I want it in the whole .html i'm currently viewing.


Cheers