JavaScript - Passing A Text String As An Img Src Alt Variable

Hi,
I am having trouble passing the correct id to change the innerHTML.

I have a jsp that display people and their address information. There could be several people in the list, so it is in a loop. That part all works good. There is a drop down list with countries in them. Based on the country they select, I want to change some of the text. Here is what I have:

Code:

<tr>
   <td class="datashaded" valign="top"><font size="2"><b>Country:</b></font></td>
   <td class="datashaded" valign="top"> 
     <select tabindex="<%=countryTab%>" name="<%=country%>" size=1" onChange="changeText(this.form.<%=country%>, this.form.<%=addressLabel%>, this.form.<%=zipLabel%>);">
          <% for (int i =0; i < countryList.size(); i++ ) { 
	       String countryOption = (String)countryList.get(i);
	       String countryVal = bene.getAddress().getCountry();
	       String selected = "";
	     	if ( countryOption.equalsIgnoreCase( countryVal ) )
	             selected = "selected";
	                           			
	        %>
	       	<option value="<%=countryOption %>" <%=selected%> ><%=countryOption%></option>
	        <% } %>		
	</select>
    </td>
</tr>

<tr>
    <td class="datashaded"><div id="addr1"><font size=2><b id="<%=addressLabel%>">Address:</b></font></div></td>
    <td class="datashaded">
	  <input size=20 maxlength="50" tabindex="<%=add1Tab%>" name="<%=address1%>" value="<%=address1Value%>"			    </td>
</tr>

Everytime through the loop, addressLabel has an index added to it so it is unique - so I can refer to each person separately.

Here is the js function:
Code:

 function changeText(sel, txtField1, txtField2)
 {
 	var selectedValue = sel[sel.selectedIndex].value;	
 	if ( selectedValue == "<%=IParticipantConstants.BENEFICIARY_COUNTRY %>")
 	{
 		document.getElementById(txtField1).innerHTML = 'Address:';
		document.getElementById(txtField2).innerHTML = 'Zip:';
	}
	else
	{
		document.getElementById(txtField1).innerHTML = 'Street or P.O. Box';
		document.getElementById((txtField2).innerHTML = 'Postal Code:';
	}
}

When I hardcoded the id= value, not matter which group I changed the country on, only the first one was changing, so I knew I needed unique ids for each group. There is more to the table, but this is the good part.

When the onChange fires now, Nothing at all happens.

Can anyone see the problem??

Thanks for looking!

I've been staring at this same problem for over a week now. I've worked around it as best as i can but i think it's time to ask someone else for input.

I'm trying to pass a value thru an ajax parameter.. that's all. it SHOULD be easy in theory.

what i want to do is create a jscript variable then pass that variable as the value for a parameter.


php then converts that value to something it can use to finish the rest of my code.

As i said it's hindering my webpage progress and i would like to get it fixxed soon so any help would be appreciated.

Code:

 
function getSelection()
{
var selection=document.getElementsById("SelectedItem");

var xmlhttp;//create a var for the obj
if (window.XMLHttpRequest)//if requesting an obj...
{
// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else if (window.ActiveXObject)
{
// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
else
{
alert("Your browser does not support XMLHTTP!");
}
xmlhttp.onreadystatechange=function()
{
if(xmlhttp.readyState==4)
{
var text = xmlhttp.responseText;
addNode(text);
}
}
xmlhttp.open("GET","battle_nin.php?selection",true);
xmlhttp.send(null);


}
//the php snippet
$currentjutsu=$_GET[selection];

I have a function which is currently called twice on the same page. Part of the function is to apply an onkeyup event to a created element. The problem is that when the function is called twice the first created element calls the onkeyup function of the second element!

table_JD.length-1 = 0 for first element
table_JD.length-1 = 1 for second element

updateSearch_TC_JD(1) is somehow called from first element!

Code:

newSearchBox.onkeyup = function() {updateSearch_TC_JD(table_JD.length-1)}

Thanks for any help you can provide!

Hey there,

I'll explain what I'm trying to do. I have a back-to-top button on my website that will only appear after the user is 500px down the page. I'd like to be able to change that 500px value to whatever the users window height is.

I have a code that retrieves the users window height and will echo it wherever I place the script on my page:

Code:

<script>
var winW = 800, winH = 600;
if (document.body && document.body.offsetWidth) {
 winW = document.body.offsetWidth;
 winH = document.body.offsetHeight;
}
if (document.compatMode=='CSS1Compat' &&
    document.documentElement &&
    document.documentElement.offsetWidth ) {
 winW = document.documentElement.offsetWidth;
 winH = document.documentElement.offsetHeight;
}
if (window.innerWidth && window.innerHeight) {
 winW = window.innerWidth;
 winH = window.innerHeight;
}

document.writeln(+winH);

</script>

I'll also post the script for the back-to-top button:

Code:

<script type="text/javascript" src='<?php bloginfo('template_url'); ?>/js/jquery.min.js'></script><script>
$(document).ready(function(){

	// hide #back-top first
	$("#back-top").hide();
	
	// fade in #back-top
	$(function () {
		$(window).scroll(function () {
			if ($(this).scrollTop() > 500) {
				$('#back-top').fadeIn();
			} else {
				$('#back-top').fadeOut();
			}
		});

		// scroll body to 0px on click
		$('#back-top a').click(function () {
			$('body,html').animate({
				scrollTop: 0
			}, 800);
			return false;
		});
	});

});
</script>

In that first code, it seems like the value +winH is what I need to use. The line document.writeln(+winH); merely prints the value as text on my page.

Now in this second piece of code there's two numeric values. The second, 800, is the speed that the page scrolls back to the top. The first value, 500, is the value I want to replace.

Can anyone guide me through how I might combine these two scripts to work together?

Hello

Can i pass php Variable into javascript function like this example.

PHP Code:
 <script type="text/javascript">
<!--
function confirmation() {
    var answer = confirm("are u sure?")
    if (answer){

        window.location = "user.php?action=statusd&uid=".$row['id']."";
    }
    else{
        alert("Canceled")
    }
}
//-->
</script> 


This ".$row['id']." will be an user id ...

link
PHP Code:
<a href='#' onclick='confirmation(); return false;'>Go</font></a> 

Hi,

I'm having one javascript function which will return the variable and I need to pass that variable to command button action.Please find the below code and let me know how I can achieve this.
<script>
function addEntry(entries) {

var uploadedEntry = entries[0].entryId;
alert("Uploaded Entry Details::::" + uploadedEntry );
}
</script>

<h:commandButton tabindex="1" image="../img/submit.gif"
action="#{portfolioListing.uploadMediaEntry(uploadedEntry)}"

Thanks,
Anil

google is not my friend on this one

if I wanted to set a variable with radio buttons to decide whether a function adds or subtracts, I know I can't do this:

Code:

<body>

<input type="radio" name ="op" onclick="op='-'">count up: <input type="radio" name ="op" onclick="op='+'">

<script type="text/javascript">

var op;

function calc() {
start=start op 1000;
	}
</script>
</body>

but is there something I can do, without getting all if/elsey?

I need to get this script to work, I only included what im having the problem with.

I am Using jQuery Library.

Here is how this should work:
.btnRoof div is clicked
the parent id is retrieved as var pid
a function called roof is called which simply changes a css background to "color"
the function perform is called to get the "color1[0]" from the array.

My Problem:
perform() returns the word color1, color10, color1[0], or c. instead of
images/cp-roof-blue.png as listed in the array.

Code:

$(document).ready(function() {
	
var color1=new Array(); 
color1[0]="images/cp-roof-blue.png";       
color1[1]="images/cp-panel-blue.png";
color1[2]="images/cp-trim-blue.png";


function perform(name, x) {
	alert(name[x]);
	//alert([name][x]);
	//alert(name+'['+x+']');
	//alert(color1[0]); // correct
    return name[x];
}
	
function Roof(color) {
	$("#colorPicker .roof").css("background", "url("+color+")");
}
	
$('.btnRoof').click(function() {
	var pid = $(this).parent().parent().attr("id");			
	Roof(perform(pid, 0));
});


});

I tried to clarify as much as possible, please let me know if I need explain further. Thanks.

I'm more of an actionscript person but got roped into an html/javascript job.

What I need to do, and it shouldn't be that difficult is this:

page1.html - there is a yellow button and a red button - if the user clicks on the yellow button I want to set a cookie with the value "yel" then load the next page - if they click the red button set that cookie with the value "red"

page2.html - 'onload' i want to read that cookie and load up the main image to match, something like this maybe?... document.mainimage.src='img/main_' + variable + '.png'
so that the path would be for example 'img/main_red.png'

Any help please? Preferably javascript only and as simple as possible.

If you think this would be easier sending that variable in the URL instead of as a cookie please explain. I'm having a very hard time searching for tutorials that are any good and that do exactly this kind of thing.

Hi,

I have a DOM click event that creates a <span>. When the user clicks a button, it turns that <span> into a textarea that the user can type a new name in, press enter, and then the span contains the text the user input. Sort of like when you rename a file in Windows Explorer.

Anyway, the code is something like this, and I'm wondering if I can use 'area_el' in this way... right now it's giving me the error that area_el is undefined, even though I define it in the function that contains the Event declaration.

The first part is the Dom stuff to make it all work. It's not stuff I need to mess with, but I'm putting it here in case it's useful.

Code:

var Dom = {
	get: function(el) 
	{
		if (typeof el === 'string')
			return document.getElementById(el);
		else
			return el;
	},
	add: function(el, dest) 
	{
		var el = this.get(el);
		var dest = this.get(dest);
		dest.appendChild(el);
	},
	remove: function(el) 
	{
		var el = this.get(el);
		if(el.parentNode != null)
			el.parentNode.removeChild(el);
	}
};

var Event = {
	add: function() 
	{
		if (window.addEventListener) 
		{
			return function(el, type, fn) 
			{
		  		Dom.get(el).addEventListener(type, fn, false);
			};
	  	} 
		else if (window.attachEvent) 
		{
			return function(el, type, fn) 
			{
		  		var f = function() 
				{
					fn.call(Dom.get(el), window.event);
		  		};
		  		Dom.get(el).attachEvent('on' + type, f);
			};
	  	}
	}()
};

The following code defines what happens when the user clicks submit to create a polygon. I also have some variables:

Code:

var created_area_array = Array();
var createdarea_index = 0;
var number_of_areas_saved=0;
var currently_renaming=false;
  
Event.add(window, 'load', function()
{
	Event.add('SubmitArea', 'click', function() 
	{
		if(polyPoints.length>0)
			add_created_area();
	});	
});

Finally, where the issue is. I define area_el in the function below, and further down I want to pass it to a function within the "rename" click event, but I get an error that area_el is undefined.

Code:

function add_created_area()
{
	number_of_areas_saved++;
	var area_el = document.createElement('span');
	var area_el_remove = document.createElement('span');
	var area_el_rename = document.createElement('span');
	var new_entry = polyPoints;
	var new_entry_array_index = "Area" + (createdarea_index);
	var new_entry_array_name = "Area #" + (createdarea_index+1);
	area_el.innerHTML = '<span class=\"address-text\">' + new_entry_array_name + '</span><br>';
	
	area_el_remove.innerHTML = "<a onMouseOver=\"rollover('address_remove')\" onMouseOut=\"rollout('address_remove')\" style='cursor:pointer;'>" +
	"<img src=\"images/tabs-icons/normal-address_remove.png\" name='address_remove' title='remove' alt='remove'></a>&nbsp;";
	
	area_el_rename.innerHTML = "<a onMouseOver=\"rollover('area_rename')\" onMouseOut=\"rollout('area_rename')\" style='cursor:pointer;'>" +
	"<img src=\"images/tabs-icons/normal-area_rename.png\" name='area_rename' title='rename' alt='rename'></a>&nbsp;";
	
	created_area_array[new_entry_array_index] = new_entry;
	createdarea_index++;
	
	Dom.add(area_el_remove, 'CreatedAreas');
	Dom.add(area_el_rename, 'CreatedAreas');
	Dom.add(area_el, 'CreatedAreas');
	Event.add(area_el, 'click', function(e) 
	{
		if(!currently_renaming)
		{
			polyPoints = [];
			var thePolyPoints = (created_area_array[new_entry_array_index]).toString();
			
			alert(thePolyPoints);
			
			//formatting created_area_array[new_entry_array_index] to store as polygon points in the polyPoints array
			thePolyPoints = thePolyPoints.replace(/[\[\]{}]/g, "");
			thePolyPoints = thePolyPoints.replace(/Location/g, "");
			
			//adding the co-ordinates to the polyPoints array
			thePolyPoints = thePolyPoints.split(",");		
			for(var ctr=0; ctr+1<thePolyPoints.length; ctr+=2)
			{
				var location1 = new Microsoft.Maps.Location(thePolyPoints[ctr],thePolyPoints[ctr+1]);
				polyPoints.push(location1);
			}
			
			var out="";
			for(var i=0; i<polyPoints.length; i++)
			{
				out += polyPoints[i] + " ";
			}
			alert(out);
			
			//creating the polygon and searching...
			if(create_area==true)
			{
				drawPolygon();	
				polygonSearch();
			}
			else if(create_area==false)
			{
				document.getElementById('createarea').innerHTML = "<a id='createarea'><span class='create_area' style='color:blue'><strong>Create Area</strong></span></a>";
				document.getElementById("mapDiv").oncontextmenu = function(){return false}
				MouseUpHandlerId = Microsoft.Maps.Events.addHandler(map, "mouseup",MouseUpHandler);
				MouseDownHandlerId = Microsoft.Maps.Events.addHandler(map, "mousedown",MouseDownHandler);
				MouseMoveHandlerId = Microsoft.Maps.Events.addHandler(map, "mousemove",MouseMoveHandler);
				MouseOverHandlerId = Microsoft.Maps.Events.addHandler(map, "mouseover",MouseOverHandler);
				drawPolygon();	
				polygonSearch();
				create_area=true;
			}			
		}
	});
	Event.add(area_el_remove, 'click', function(e) 
	{
		Dom.remove(this);
		Dom.remove(area_el_rename);
		Dom.remove(area_el);
		if(number_of_areas_saved>1)
			number_of_areas_saved--;
	});
	Event.add(area_el_rename, 'click', function(e) 
	{
		if(!currently_renaming)
		{
			area_el.innerHTML = '<textarea name=\"renaming_area\" id=\"renaming_area\" style=\"width:200px;height:10px;background-color:#DCDCDC; resize:none;font-size:8px;\" onKeyPress=\"return enter_rename(area_el, event)\" maxlength=\"30\"></textarea><br>';
			currently_renaming=true;
		}
	});
	Event.add("createdarea_clear", 'click', function(e)
	{
		Dom.remove(area_el_remove);
		Dom.remove(area_el_rename);
		Dom.remove(area_el);
		created_area_array = [];
		number_of_areas_saved=0;
		createdarea_index=0;
	});
}

The enter_rename(area_el, event) function that isn't passing in my variable.

Code:

function enter_rename(area_el, event)
{	
	var keyPressed = (event.which) ? event.which : event.keyCode;
	var current_str = document.getElementById("renaming_area").value;
	if(keyPressed == 13)
	{
		if(current_str.length>0)
		{
			if(allSpaces(current_str)==true)
			{
				alert("Please enter a meaningful area name.");
				return false;
			}
			else
			{
				area_el.innerHTML = '<span class=\"address-text\">' + current_str + '</span><br>';
				currently_renaming=false;
				return true;	
			}
		}
		else
			return false;
	}
	else
		return true;
}

Making area_el global does not clear the span elements when I click my "createdarea_clear" button, however when it's local, the function works as expected.

I have the following code, where I am inputting a word and on clicking the button , i am setting the value of the text box in div class="twit" which is hidden.

now I have to access the value of this hidden text box (name=q) using php.Say I want to print using php .How do I do this ?


Code:

<html 
  <head> 
    <title></title> 
    <link rel="stylesheet" href="search.css" type="text/css" media="screen" /> 	
    <script type = "text/javascript">
	function gettweet()
	{
		document.getElementById("src").value= document.getElementById("searchbox").value;
		}
  </script>
 </head>

 <BODY>
 <form align="center">
 <div id="top">
 <h3>Search </h3>
  <input type ="text" name="q1" id = "searchbox"\>
	<input type ="button" value="ClickMe!" id = "b1" onclick="gettweet();"\>
 </div>
 	<div id= "twit">
	<input type ="text" name="q" id = "src"\>
	<?php
	 
	?>
	
</div>

</form>
 </BODY>
</HTML>

I have two versions of this document. The first version uses only JavaScript and the standard PROMPT(). It works very well, but I would like to insert the name prompt into the page using the input command. For some reason the variable loaded in the HTML statement doesn't get passed to the JavaScript. Any ideas would be appreciated! This is only a small test page. Sorry I don't know about the [code] tag...


<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="generator" content="CoffeeCup HTML Editor (www.coffeecup.com)">
<meta name="created" content="Sat, 10 Sep 2011 19:40:31 GMT">
<meta name="description" content="">
<meta name="keywords" content="">
<title>Enter golfers name</title>
<!--[if IE]>
<script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<SCRIPT LANGUAGE="JavaScript" type="text/javascript" src="script1.js"></SCRIPT>
<SCRIPT LANGUAGE="JavaScript">

function GetPage(){

document.write("OK")
var lab = "";
var result = fullname.toUpperCase();
var word=result.split(" ");
fname = word[0]
lname = word[1]
alpha = lname.slice(0,1);
lab = fname.concat("_")
lab = lab.concat(lname)
if(word[2]){
ext = word[2]
lab = lab.concat("_")
lab = lab.concat(ext)
}
var intro = "./Stats_";
page = intro.concat(alpha);
page = page.concat("_golfers.html#");
page = page.concat(lab)
document.write(page)

<!-- window.location.pathname = page
}
</script>
</head>
<body>
<center>
<form action="form_action.asp" method="get">
You can enter the golfersname or select him from the above list.<br><br>
<input type="text" name="fullname" />
<button type="submit" onclick="GetPage()">GO</button>
</form>
</center>
<BR><BR><BR>
This is the end
</body>
</html>

I have inherited some code, and cannot get it to work. Note the bold section in the OBJECT tag below. I believe this is where the issue is.

Code:

<script language="JavaScript">
var camArray = new Array();
camArray['Dolliver'] = "http://video.dot.ca.gov/asx/D5-Bello-at-101.asx";
camArray['Mattie'] = "http://video.dot.ca.gov/asx/D5-Mattie-Rd-at-101.asx";
camera="Dolliver";

var camHTMLd = "<object id='MediaPlayer' width=320 height=240 classid='CLSID:22D6f312-B0F6-11D0-94AB-0080C74C7E95' standby='Loading Windows Media Player components...' type='application/x-oleobject' codebase='http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=6,4,7,1112'><param name='filename' value='"+camArray[camera]+"'><param name='Showcontrols' value='False'><param name='autoStart' value='True'><embed type='application/x-mplayer2' src='"+camArray[camera]+"' width=320 height=240></embed></object>"

function changeCam(camera){

	document.getElementById("caltransCamera").innerHTML = camHTMLd;
	//alert(camHTMLd+camArray[camera]);
}

</script>

Then in the page, I have the following code:
<a href="javascript:changeCam('Mattie');">101 at Mattie Road</a>

It SHOULD open and start displaying the MATTIE cam, but it reloads the default Dolliver.

What am I missing? Thank you in advance.

I'm trying to make it so when you click a cell in a table it runs a function based on the value within that cell. With the current code, no matter what cell is clicked, the alert box displays the same number, which is the last number in my array. The variable, princ, is just being overwritten rather than writing code to each the cell with the proper value. Help is appreciated. Thanks.

Code:

for(i=0;i<=3;i++){
	document.writeln('<tr>');
	document.writeln('<th>'+(periodArray[i])+'</th>');
	for(j=0;j<=2;j++){
		princ = principleArray[j][i];
		document.writeln('<td onclick="(calculateInterest(princ,1,1))">$'+principleArray[j][i]+'</td>');
	}
	document.writeln('</tr>');
}

function calculateInterest(principle,rate,period){
	totalInterest = principle * rate * period;
	totalLoanCost = principle + totalInterest;
	alert('Total Interest: '+totalInterest+'\n'+'Total Loan Cost: '+totalLoanCost);
}

Hi all,

I'm having some trouble with the this...

I have a PHP based calendar where the cells will change color depending on the number of clicks.. this all works fine, but is pointless if I can't send the outcome along in an email. I can do this with PHP but first need to get the values into a hidden field.

This is what I have:

Code:

<script type="text/javascript">	
	function countClicks (obj){
            if (!obj.count) {
                obj.count = 0;
            }
 
            obj.count++;
            if (obj.count > 4) {obj.count = 1};
 
            if(obj.count == 1){
                obj.style.color='#FFFFFF';
                obj.style.backgroundColor='#66CC33';
                obj.parentNode.style.backgroundColor='#66CC33';
				document.getElementById("availability").value='Available';
            }
           
            if (obj.count == 2){
                obj.style.color='#FFFFFF';
                obj.style.backgroundColor='#FF0000';
                obj.parentNode.style.backgroundColor='#FF0000';
				document.getElementById("availability").value='Not Available';
            }
           
            if (obj.count == 3){
                obj.style.color='#FFFFFF';
                obj.style.backgroundColor='#FFCC33';
                obj.parentNode.style.backgroundColor='#FFCC33';
				document.getElementById("availability").value='Working';
            }
			
			if (obj.count == 4){
                obj.style.color='#000000';
                obj.style.backgroundColor='#FFFFFF';
                obj.parentNode.style.backgroundColor='#FFFFFF';
				document.getElementById("availability").value='Not Set';
            }
        }
</script>

and...

Code:

echo "<input type=\"hidden\" name=\"availability\" id=\"availability\" value=\"\">";

All I'm trying to do is populate value with either 'available', 'not available', 'working' or 'not set'...

however, it is worth noting that each cell may have a different value, e.g. 1 cell might be working while the other is not available... so i need to pass the values of all the cells.

Can anyone help me out here.

Many thanks,

Greens85