JavaScript - Javascrip & Div Manipulation ?

I code through Greasemonkey using Firebug on Firefox. I'm trying to write my first script using a simple function to change the appearance of my email address in Gmail.

My current email address is formatted like this example: Code:

firstlast@gmail.com

I want the script to manipulate the text to resemble this: Code:

first.last@gmail.com

I've posted my script below. The Mozilla error console shows no syntax errors or warnings. JavaScript IS allowed to run and there are no restrictions of any kind that should hinder this script's ability to run. What am I doing wrong in the code? Any help would be greatly appreciated!

Code:

(function () {

	var loadOldName = window.document.body.getElementById('loading').getElementsByClassName('msg').textContent('\nLoading+ firstlast@gmail.com…\n');
	var topLeftName = window.document.getElementsByClassName('cP').getElementsByClassName('bB').getElementsByTag('u').innerHTML('<b>firstlast@gmail.com</b>');
	var topLeftDrop = window.document.getElementsByClassName('cP').getElementsByClassName('J-N-Jz').innerHTML('<span class="Qu L4">firstlast@gmail.com (default)</span>');

	function changeName() {
		
		if(loadOldName) {
			window.document.body.getElementById('loading').getElementsByClassName('msg').removeChild(textContent('\nLoading+ firstlast@gmail.com…\n')).appendChild(textContent('\nLoading+ first.last@gmail.com…\n'));
		};

		if(topLeftName) {
			window.document.getElementsByClassName('cP').getElementsByClassName('bB').getElementsByTag('u').removeChild(innerHTML('<b>firstlast@gmail.com</b>')).appendChild(innerHTML('<b>first.last@gmail.com</b>'));
		};

		if(topLeftDrop) {
			window.document.getElementsByClassName('cP').getElementsByClassName('J-N-Jz').removeChild(innerHTML('<span class="Qu L4">firstlast@gmail.com (default)</span>')).appendChild(innerHTML('<span class="Qu L4">first.last@gmail.com (default)</span>'));
		};

	};

	changeName();

});

I have created a simple webpage that allows users to search multiple comparison shopping sites at once. This is just a side project that I am working on. At the current time, the webpage has the sites listed with checkboxes. The user can put in a search term in the box and then select which sites they want to search. The sites then open in a new window or on different tabs depending on which browser they are using.

What I would like to do is find out if there is a way to have the same thing, but the sites open in the same window below the search box, like in tabbed frames. I tried doing something with the tabbed viewer script from dynamic drive: http://www.dynamicdrive.com/dynamici...bdocviewer.htm, but was unable to figure out how to get the search parameter into the url. My page can be found at http://www.imarkinteractive.com/tools/onesearch.html and all of the javascript is on the page.

Does anyone know if this can be accomplished and if so, how would I go about doing it. I can run a php script on my server if that would be easier, but I would really appreciate the assistance. Thanks.

Hi,

I'm looking for some help, or perhaps an explaination in regards to "click & rotate" an image using your cursor with Javascript. I've seen this a couple of times on various websites and I'm wondering how difficult/expensive it is to develop such an image.

I own a clothing company and what I'm looking to do is to create images on my website of a product in which the customer can click on and "rotate" to see a 360 degree view of the product. Think autocad to a degree...

Is Javascript the best language to pursue for this function? I'm quite new to this department, so any help/advice is greatly appreciated.

I have the following code for a textbox that is supposed to change itself to 20 if the entered value is over 20, to 1 if it's less than 1, and round itself to the nearest integer

Code:

<input type="text" size="1" name="blevel" value="1" onchange='
document.unitselect.blevel.value++;
document.unitselect.blevel.value--;
document.unitselect.blevel.value = document.unitselect.blevel.value / 1
Math.floor(document.unitselect.blevel.value);
if(document.unitselect.blevel.value > 20){
	document.unitselect.blevel.value = 20
}else if(document.unitselect.blevel.value < 1){
	document.unitselect.blevel.value = 1
}
'>

The textbox is in a form named "unitselect". For some reason, it just ignores the Math.floor line. After experimenting for a bit, I found out that it was treating the textbox value as a string. I tried both using the increment/decrement operators and dividing it by 1. Although the operations executed properly, it still treated it as a string after the operations. Does anyone know what I can do to round this value?

I have tried to manipulate attributes in a specific class & am successful by using jquery. Now for the purpose of learning I want coders to look at my simple snippet & tell me how can I use functions namely getElementsByTagName & For loop instead of each.

http://jsfiddle.net/defencedog/Zz7cX/

[My snippet adds 'fullscreen' functionality to youtube vids, which unfortunately isn't present in default phpBB3 forum engine]

regards;;

Hello everyone,

I am trying to make a canvas element display an image with some text on using canvas.drawImage and canvas.fillText. Only problem is my code is generating a very odd and hard to debug error.

Thanks in advance,

Alex

Code(JS):
Code:

function runstuff() {
	canvasthing = document.getElementById('1');
	context = canvasthing.getContext('2d');
	purple = new Image();
	purple.src = 'img/buttonpurple.png';
	purple.onload = function() {
    context.drawImage('purple', 0, 0);
	};
	context.font = '16px Vani';
	context.textBaseline = 'top';
	context.fillText('Test', 26, 24);
}

Code(html):
Code:

<!doctype html>
<html lang="en">
	<head>
		<title>POB.G</title>
		<meta http-equiv="content-type" content="text/html; charset=utf-8" />
		<link rel="stylesheet" type="text/css" href="style.css">
		<script type="text/javascript" src="script.js">
		</script>
	</head>
	<body onload="runstuff()">
	<canvas id="1" width="127" height="128"></canvas>
	</body>
</html>

Error:
Code:

Error: uncaught exception: [Exception... "Could not convert JavaScript argument arg 0 [nsIDOMCanvasRenderingContext2D.drawImage]"  nsresult: "0x80570009 (NS_ERROR_XPC_BAD_CONVERT_JS)"  location: "JS frame :: file:///C:/Users/*BlahBlahBlah/script.js :: <TOP_LEVEL> :: line 7"  data: no]

Ok, first off I would like to say hi to everyone as this is my first post! Now that we have been introduced, here is my problem. I am trying to create a billing system in which you generate invoices. The way I am going about this is using a table with rows for each item the user is placing on the invoice. I have a script that adds new rows to the table when the user wants to place more than one item on the invoice, thats all fine and dandy. The problem is that I also want to be able to delete any row of the table at any time so that the user can remove items as well. When the user presses the attached "delete" button on the row they wish to remove the delete script gets the table length and changes the id and name of every item in the rows below the one being deleted so that when I submit the data as a form it will have a predictable pattern for getting the post variables. At the moment the script runs fine the first time and does exactly what it is supposed to. The issue is that the second time you run it after it has changed the id and name values for the delete button elements on the lower rows it only makes it to the first alert() call! I have been pulling my hair out for days!!!!!

Here is the Code:

Code:

	function getEl(element)
		{
			var object = null;
			if (document.layers)
				{
					object = document.layers[element];
				}
			else if (document.all)
				{
					object = document.all[element];
				}
			else if (document.getElementById)
				{
					object = document.getElementById(element);
				}
			return object;
		}
		
function addRow()
{
  var tbl = getEl('invTbl');
  var lastRow = tbl.rows.length;
  // if there's no header row in the table, then iteration = lastRow + 1
  var iteration = lastRow;
  var row = tbl.insertRow(lastRow);
  
  var cellqty = row.insertCell(0);
  var qty = document.createElement("<input type='text' name='qty_"+iteration+"' id='qty_"+iteration+"' size='4' value='1' onChange='javascript:updatePrice();' />");
  cellqty.appendChild(qty);
  
  var cellitm = row.insertCell(1);
  var itm = document.createElement('input');
  itm.type = 'text';
  itm.name = 'itm_' + iteration;
  itm.id = 'itm_' + iteration;
  itm.size = 30;
  cellitm.appendChild(itm);
  
  var celldsc = row.insertCell(2);
  var dsc = document.createElement('input');
  dsc.type = 'text';
  dsc.name = 'dsc_' + iteration;
  dsc.id = 'dsc_' + iteration;
  dsc.size = 50;
  dsc.value = iteration;
  celldsc.appendChild(dsc);
  
  var cellprc = row.insertCell(3);
  var prc = document.createElement("<input type='text' name='prc_"+iteration+"' id='prc_"+iteration+"' size='9' value='1.00' onChange='javascript:updatePrice();' />");
  cellprc.appendChild(prc);
  
  var celldel = row.insertCell(4);
  var del = document.createElement("<input type='button' name='"+iteration+"' id='"+iteration+"' value='Delete' onClick='javascript:removeRow(this.id);' />");
  celldel.appendChild(del);

}

function removeRow(row)
{

	alert("you are deleting row " + parseInt(row));
	tbl = getEl('invTbl');
	rowTotal = tbl.rows.length;
	alert("there are " + rowTotal + " rows!");
	tbl.deleteRow(parseInt(row));	
	for ( i = 1; i < rowTotal; i++ )
		{
		if ( i > parseInt(row) )
			{
			place = i - 1;
			alert(i + " becomes " + place);
			qtycontainer = "qty_" + i;
			itmcontainer = "itm_" + i;
			dsccontainer = "dsc_" + i;
			prccontainer = "prc_" + i;
			delcontainer = i.toString();
			buttonchange = place.toString();
			
			getEl(qtycontainer).name = 'qty_' + place;
			getEl(qtycontainer).id = 'qty_' + place;
	
			getEl(itmcontainer).name = 'itm_' + place;
			getEl(itmcontainer).id = 'itm_' + place;
			
			getEl(dsccontainer).name = 'dsc_' + place;
			getEl(dsccontainer).id = 'dsc_' + place;
			getEl('dsc_'+place).value = getEl('dsc_'+place).id;
			
			getEl(prccontainer).name = 'prc_' + place;
			getEl(prccontainer).id = 'prc_' + place;
			
			getEl(delcontainer).name = buttonchange;
			getEl(delcontainer).id = buttonchange;
			alert("del button changed to " + getEl(i).id);
			}
		}
//	updatePrice();
}

The button element for each row calls javascript:removeRow(this.id);

Please help me figure out what I am doing wrong!