JavaScript - How To Concatenate Variables.

I hope someone can help me!

I have a website that sells a product through a third party merchant - ie a customer clicks my "buy now" button and they are transfered to the merchants payment processing page. once the transaction is complete the customer is sent back to my thank you page where I give them some extra stuff for free.

All pretty normal I guess.

The problem is this - The merchant sends back some url parameters when they transfer the customer to the thank you page and I would now like to use the "customer name" parameter to personalise the thank you page to test if this makes any difference to my return rate.

Now, whilst I am not a complete newbie I haven't got a clue how to achieve this. What I want to do is have the page display:

"Hello [customer] .....etc..."

The customer name parameter is passed as "cname" and is one of about a dozen passed seperated, presumably, by "&"

Thanks for any help!

Paul

Hey,

I'm new here, have always browsed but never created an account until now. I am an avid PHP programming but Javascript is not my thing. I am working on a module for a website of mine and I can't seem to figure thing one thing out.


I have a module that competes a telephone verification and I would normally just use PHP but I am limited to the fact that I cannot alter or refresh the web page. I have a javascript module currently that people click a button and AJAX calls a serverside PHP script (which outputs a a random 4 digit code that it tells the user). That random 4 digit code is assigned to a global variable and then updating using the code ...

verification_code=page_request.responseText (Output of my PHP document through AJAX)

And then I have a textbox in which users input the 4 digit code (that the telephone script tells them). I have a variable called verification_input which is equal to the value of the textbox.

I've been debugging this for awile now, If i write something like this
Code:

alert (verification_input + " code: " + verification_code); 
	if(verification_code==verification_input){
							
			alert('success?');
			
	}

everything works except for the success alert. The only weird thing I notice is the output of the first alert will be something like

2637 code :
2637

which the second set of numbers being on the next line.

Any help would be appreciated. It's probably something simple

Hi,

I haven't used variable variables before and I'm still trying to get my head around it. I think I'm going OK but I have run into a fairly obscure little problem that I thought I'd throw out there to see if anyone has any ideas...

The plan: to make a distance calculator that measures a line made by clicking on a google map. Overall distance is shown at the side, but segment length is shown in tooltip-like labels called Elabels. Segments can get dragged and segment length is updated as dragging occurs. Being that the number of segments (and labels) depends on the number of user clicks, I thought it would be a good idea to use the variable variable to keep all the references unique. If there's a better way to do this, I'd love to hear about it.

The problem: it all works fine, except that, if you consider that dragging a point on a line changes two line lengths (let's say A is the start, B is the drag point and C is the end), only one length is updating - the A to B section. What I want is for the Elabel at C to reflect the change in the B to C line length as well.

Anyway. Here's the page I'm working on. The relevant code is below. I've tried duplicating it and adding +1 to the variables (and every permutation thereof) but no dice. All I need really is for exactly what's happening now to be happening in the next Elabel along in the array. Any suggestions much appreciated.

Code:

function leftClick(overlay, point) {
count++;
var mar1= count-2;
        var mar2= count-1;
        var mar3= count;
        var mar4= count+1;

window["label" + mar2]=new ELabel(point, dist ,"labelstyle",new GSize(10,10));
        labels2.push(window["label" + mar2]);
        map.addOverlay(window["label" + mar2]);  

  // Drag listener
  GEvent.addListener(marker, "drag", function() {

drawOverlay();
         window["marker" + mar2]=markers[mar1];
        window["marker" + mar3]=markers[mar2];
        window["marker" + mar4]=markers[mar3];
        
line = [window["marker" + mar2].getPoint(),window["marker" + mar3].getPoint()];
    dist2=window["marker" + mar2].getPoint().distanceFrom(window["marker" + mar3].getPoint());  
                dist2="Segment<br> length:<br>"+dist2.toFixed(0)+"m";
        if(parseInt(dist2)>10000){dist2=(parseInt(dist2)/1000).toFixed(1)+"km";}
           window["label" + mar2].setPoint(marker.getPoint());
      window["label" + mar2].setContents(dist2);
}

Hello to all!

Can I have 2 variables upon one select?

The code below is created dinamicly with php from a database, and displays a dropdown select box, the only thing is that the values: Oliver Franchis, Pedro pastor, Maria China... have unique ID's and when the name is selected I would like the ID allso to be.

Code:

<!-- Populate list with friends  START-->
var newTextbox = document.createElement('select'); 
newTextbox.className = 'fn-select';
newTextbox.name = "opcion";

//First user in the populated select menu is the person Loged in
var op1 = new Option("", "Oliver Franchis");
newTextbox.appendChild(op1);
var txt1 = document.createTextNode('Me | Oliver Franchis');
op1.appendChild(txt1);

//Next users are my friends in the database
 
	var op1 = new Option("", "Pedro pastor"); 
    newTextbox.appendChild(op1);
    var txt1 = document.createTextNode('Pedro pastor');
    op1.appendChild(txt1);
	
	var op1 = new Option("", "Maria China"); 
    newTextbox.appendChild(op1);
    var txt1 = document.createTextNode('Maria China');
    op1.appendChild(txt1);
	
	var op1 = new Option("", "Juan Testing"); 
    newTextbox.appendChild(op1);
    var txt1 = document.createTextNode('Juan Testing');
    op1.appendChild(txt1);
	
	var op1 = new Option("", "Carmen Hernandez"); 
    newTextbox.appendChild(op1);
    var txt1 = document.createTextNode('Carmen Hernandez');
    op1.appendChild(txt1);
	
	var op1 = new Option("", "Eduardo Palote"); 
    newTextbox.appendChild(op1);
    var txt1 = document.createTextNode('Eduardo Pajote');
    op1.appendChild(txt1);
	
editAreaText.appendChild(newTextbox);
editArea.appendChild(editAreaText);
<!-- Populate list with friends  END-->

This is the function on the index.php page:

Code:

function saveNote (note) {
	resetAjax();
	var photoId = note.container.element.id;
	ajax.setVar('action', 'save');
	ajax.setVar('photo_id', photoId);
	ajax.setVar('note_id', note.id);
	ajax.setVar('left', note.rect.left);
	ajax.setVar('top', note.rect.top);
	ajax.setVar('width', note.rect.width);
	ajax.setVar('height', note.rect.height);
	ajax.encVar('text', note.gui.TextBox.value);
             ajax.runAJAX();
	var statusDiv = document.getElementById('PhotoNoteStatus');
	ajax.onCompletion = function () {statusDiv.innerHTML = "<p>Note saved.</p>"; }
	return 1;
}

Hi all
Is there a way in Javascript to store a value to different variables in 1 command, something like:

Code:

Store 50 to nHeight,nWidth,nTop;
or
nHeight=nWidth=nTop=50;

What I try to do is avoid errors by typing the value only once in code. I could do the following, but thought there might be a more direct way:
Code:

var nValueToStore = 50;
nHeight = nValueToStore ;
nWidth = nValueToStore ;
nTop = nValueToStore ;

All,
I have the following code:
Code:

var http_request = false;
   function makePOSTRequest(url, parameters) {
	   alert(parameters);
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
	  
      http_request.onreadystatechange = alertContents;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }

   function alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            result = http_request.responseText;
            document.getElementById('myspan').innerHTML = result;
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
      
   function getjob(obj) {
	  var poststr = "job_id=" + encodeURI( obj );
      makePOSTRequest('getnextjob.php', poststr);
   }

I call the getjob but doing the following:
echo "<li><a href=\"#\" onclick=\"javascript:getjob($resultsetjob[job_id]); return false;\">$resultsetjob[name]</a></li>";

It's weird, only sometimes does it pass the variable and other times it doesn't. Is there a better way to do this??

Thanks in advance.

I am perplexed about this one.
Not sure if php is the best solution or maybe javascript.
( or both.)

I am writing a litle script that will go to my mysql table and take out
20 rows ( from about 10,000 rows ) based on the WHERE statement.

Then I want to step through these 20 rows displaying
just two filds in this fashion:

First, I want to display one field in a "box" ( using divs and css )
then wait for a form input.
Then while keeping the first displayed box and field
display the second field in a similar box a fee lines below.
Wait for a form input
update some data.

Then onto the next row.

If I use javascript then I could keep all the processing on one page and not have
to have server refreshes.

But how do I get these those array elements from
$row['field1'] and $row['field2'] into javascript vars ?

Is this the best way to do this ?

Or would php and having a couple of extra trips to the server
for form processing be better ?

Thanks for any input.



.

Hi,

I'm looking to use the document function in javascript to change the TYPE of an INPUT.

However I want to change the TYPE of the INPUT according to a variable passed to the javascript button, so i use:

document.formname.inputname.value="newvalue";

I want to be able to change what inputname is depending on what is passed to the function, but right now firefox is telling me that it's undefined.

Is there any way I can do this?

Thanks in advance,

Daniel

Hi, Ive got a iphone based website im writing in html/javascript, it all works perfectly well apart from an issue with a javascript variable and i cant figure out what im doing wrong

At the start of the code i declare a variable

var jpgname='blank'; - its blank for testing


I then have a href which attempts to change this variables value when clicked

<li class="flip"><a onClick="jpgname='test'" href="#page">Cars</a></li>

If i replace the jpgname='test' with confirm('test) i get a popupbox so i know its running this code

under my #page section (just a div named section) i have

[<h1><script>document.write(jpgname);</script></h1>

however this always has the value 'blank'

Im sure im doing something stupid but im not sure what

Any help gratefully recieved

thanks

Mike

I have this code, (a snippet of it below) which works, but how can I simplify it instead of repeating all the same code for the 12 different checks I have to run.

If whatColor == A1 I need the search variable to equal fashion
If whatColor == A2 I need the search variable to equal photography
etc.

Thanks

Code:

 if (whatColor == 'A1') {
 /*  search: 'fashion', */
new TWTR.Widget({
  version: 2, 
  type: 'search',
   search: 'fashion',
   interval: 2000, title: '', subject: '', width: 310, height: 240,
  theme: {
    shell: {
      background: '#edecee', color: '#444444'
    },
    tweets: {
      background: '#edecee', color: '#444444', links: '#e80f45'
    }
  },
  features: {
    scrollbar: true, loop: false, live: true, hashtags: true, timestamp: true, avatars: true,
    behavior: 'all'
  }
}).render().start();
 } else if (whatColor == 'A2') {
 /*  search: 'photography', */
new TWTR.Widget({
  version: 2, 
  type: 'search',
   search: 'photography',
   interval: 2000, title: '', subject: '', width: 310, height: 240,
  theme: {
    shell: {
      background: '#edecee', color: '#444444'
    },
    tweets: {
      background: '#edecee', color: '#444444', links: '#e80f45'
    }
  },
  features: {
    scrollbar: true, loop: false, live: true, hashtags: true, timestamp: true, avatars: true,
    behavior: 'all'
  }
}).render().start();

The Code, is from a twitter widget that pulls a twitter feed based on the search variable. This is the code straight from twitter.

Code:

<script src="http://widgets.twimg.com/j/2/widget.js"></script>
<script>
new TWTR.Widget({
  version: 2,
  type: 'search',
  search: 'photography',
  interval: 2000,
  title: '',
  subject: '',
  width: 310,
  height: 240,
  theme: {
    shell: {
      background: '#edecee',
      color: '#444444'
    },
    tweets: {
      background: '#edecee',
      color: '#444444',
      links: '#e80f45'
    }
  },
  features: {
    scrollbar: false,
    loop: false,
    live: true,
    hashtags: true,
    timestamp: true,
    avatars: true,
    behavior: 'all'
  }
}).render().start();
</script>

can anyone tell me why this doesn't work please:

<html>
<head>
</head>
<body>
<input type="hidden" name="ba1r1c1" value="hello">
<script language="text/javascript">
ba1r1c1.value = "goodbye";
document.write(ba1r1c1.value);
</script>
</body>
</html>

thanks

Hello,
Does anyone know how to list all declared variables in JavaScript ?
tnx

hello all

I am working on a keyword filter and am stuck on something that I am hoping someone has more experience with

my problem is that I am trying to pass a regular expression as a variable to the RegExp() function in javascript but it does not seem to be working

example below

Code:

var X = '^(?=.*?(';
var Y = 'dog))(?=.*?(cat))(?=.*?(mouse'; // this gets created dynamically
var Z = ')).*$';

var A = X + Y + Z;
// result is ^(?=.*?(dog))(?=.*?(cat))(?=.*?(mouse)).*$ and is a valid and tested expression

var B = new RegExp(A, 'i');

I want to pass B to a search() function but it does not seem to be accepted as a valid expression anymore

thanks for any help

Lately I've been doing some modding for a game called Minecraft which requires some programming in Java. I've been doing a lot of research but because I can't think of a simplified version of my questions it's hard to get any results from Google. So I'm hoping someone could answer these for me. If you can't, I would even appreciate being pointed in the right direction or led to some reading material that would answer these questions for me.

1) How can I add the value of a variable onto the name of another variable.
For instance, I have this line of code
Code:

EntityItem entityitem = new EntityItem(world, (float)i + f2, (float)j + f3, (float)k + f4, new ItemStack(Item.ingotIron));

and this variable that will always be a number
Code:

private int numberA;

I would like to add the value of numberA onto entityitem. So if numberA was 1 entityitem would become entityitem1.

2) What is the best variable type to store values such as Item.coal, which is an object within the game? Would a String type suffice?

3) Using the same code above:
Code:

EntityItem entityitem = new EntityItem(world, (float)i + f2, (float)j + f3, (float)k + f4, new ItemStack(Item.ingotIron));

How could I use a variable's value where Item.ingotIron is? I tried some different things but the compiler threw "ItemStack doesn't exist" or some error along those lines at me.

For instance if variableA's value is Item.coal, how could I use that variables value where Item.ingotIron is.
Code:

EntityItem entityitem = new EntityItem(world, (float)i + f2, (float)j + f3, (float)k + f4, new ItemStack(variableA));

I appreciate your time and help on this issue and anything you can provide will be greatly appreciated.

Hello, I am using javascript to dynamically edit a form and have run into some problems. In this excerpt of code "x" is already defined, "num" is already defined, and "eval(q)" is just pointing to the proper field in the proper form.

Code:

eval(q).onkeydown=function onkeydown(event)
		  {
			checkLength(event,x,num,5);
		  };

Now the problem is, it is literally calling the function with "x" and "num" instead of their values. I tried "eval(x)" and "eval(num)" but that literally calls it with that whole statement as the parameter. How can I call this with the actual values inside of x and num? Thank you.