JavaScript - How To View And Parse Source From An Extension?

Hi - I'm working in ASP.Net 2.0. My page has a GridView control, which is populated by a SQLDataSource. The GridView has one Button control per row. The button has a client-side javascript function (ShowDelete) attached to its OnClientClick event on DataBinding of the GridView. This event fires some javascript. The javascript does 3 things:
- It changes the text of the button from "Hide" to "Create"
- It changes the background color of the button from red to green
- It assigns a new onClientClick event to the button: "ShowAvailable"

The text and the color of the button change with no problem. After I change the OnClientClick event, I send an alert with the button's OnClientClick event and it reports it to be "ShowAvailable". However, when I click on the button, it doesn't fire ShowAvailable, it fires the original onClientClick event (ShowDelete). Also, when I do View Source, it shows the button's text, color and OnClientClick event as their original settings, i.e., "Hidden", "Red" and "ShowDelete", even though I'm looking at a green button that says "Create." What's going on here?

Here's the code I use to attach the OnClientClick event on DataBinding of the GridView:

Code:

foreach (GridViewRow row in this.gvLocation.Rows)
{
  if (row.RowType == DataControlRowType.DataRow || row.RowType == DataControlRowType.EmptyDataRow)
  {
    int rowindex = row.RowIndex + 1; //to exclude the header which is counted as a row when we get to javascript
    btnAction.OnClientClick = "ShowDelete(" + rowindex.ToString() + "); return false";
  }
}

Here's the javascript for ShowDelete:
Code:

function ShowDelete(rowindex)
{
  var locationgridID = '<%= gvLocation.ClientID %>';
  locationgrid = document.getElementById(locationgridID);
  if (locationgrid != null)
  {
    action_cell = locationgrid.rows[rowindex].cells[3];
    for (k = 0; k < action_cell.childNodes.length; k++)
    {
      if (typeof(action_cell.childNodes[k].id) == 'string')
      {
        action_cell.childNodes[k].value = "Create";
        action_cell.childNodes[k].style.backgroundColor = "Green";
        action_cell.childNodes[k].onclientclick = "ShowAvailable(" + rowindex + "); return false";
        alert(action_cell.childNodes[k].onclientclick); // reports the OnClientClick event is ShowAvailable
      }
    }
  }
}

Any thoughts are greatly appreciated!

Very new to Javascript (been a HTML/CSS guy for a while, but never really got into more than tinkering with other other people's Javascript coding), but I came across a situation I can't find canned coding for, and trying to create it from bits and pieces I Googled has led me to a dead-end.

In summary, I have a website that I frequently visit (FWIW, Firefox 3.x is my browser of choice) with many image sources referring to URLs that end with "-thumbnail.jpg". However, for better image quality, I am trying to use Greasemonkey to replace all instances of "-thumbnail.jpg" in the source of images on this site with "-bigthumbnail.jpg". The closest I could think of was to somehow use getElementsByTagName and innerHTML.replace, but realized that innerHTML does not do HTML, only content.

Below is as far as I tried to get on my own, I appreciate any assistance from the folks here to help a JS novice like myself, thanks! Code:

(function() {
var as,ae;
as = document.getElementsByTagName("img");
for (var i = 0; i < as.length; i++) {
    ae = as[i];
	ae.innerHTML = ae.innerHTML.replace(/-thumbnail/gi, "-bigthumbnail");
}
})();

I have a piece of code for adding categories to a shopping site, which was working fine but now doesn't submit after I made changes to try to validate the type image chosen for that category. I'll post the original and then changed code, anyone think they can see why it's not running?
Code:

function checkCategoryForm()
{
    with (window.document.frmCategory) {
		
		if (isEmpty(catName, 'Enter category name')) {
			return;
		} else if (isEmpty(catDescription, 'Enter category description')) {
			return;
		} else {
			
			submit();
			
		}
	}
}

Code:

function getFileExtension(filename)
{
  var ext = /^.+\.([^.]+)$/.exec(filename);
  return ext == null ? "" : ext[1];
}


function checkCategoryForm()
{
    with (window.document.frmCategory) {
		
		if (isEmpty(catName, 'Enter category name')) {
			return;
		} else if (isEmpty(catDescription, 'Enter category description')) {
			return;
		} else {
			if (getFileExtension(fileImage) =  '.jpg' || '.jpeg' || '.png' || '.gif' ){
		
		submit();
				
		} else {
			
			alert("Enter this image format is not allowed, only .jpg, .png or .gif");
			return;
			
			}
		}
	}
}

Thanks!

First off I apologize If this is in the wrong section of this forum.


So I got this concept that I think Is pretty cool. I dont know If there's anything like It out there, If there is, let me

know.
This is the concept:

You click the icon and down pops a map in which there's a circle (like this: imgur: the simple image sharer)
You can resize the circle and move it around.
Underneath the map there's a box where you can type your search.
Let's say you search for "puppies" in Brooklyn, New York The idea is that It'll scan all the coordinates inside the

circle and search for photos in google images containing those coordinates in the GPS info (EXIF).This can be useful If you for

example wants to search for photos taken in your city, or even in your neighborhood.

I can see many uses for this.
The thing is, I don't know any programming languages so I can't do this myself.
I don't even know where to start. I'm looking for a kind soul to help me with this, I don't have any money so I'm

not looking to pay anyone to do this for me. I just want some help getting started, or if someone would be kind

enough to do It for free. (Though that Is very unlikely.)

Thanks in advance!

Sorry for my bad english, it is not my native language.





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01-30-2015, 04:24 PM #2
Philip M View Profile View Forum Posts

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Hope springs eternal in the human breast. – Alexander Pope, An Essay on Man

You might as well say that you want to write a novel in French, but do not know anything about that language.

Hello.

I have used the Firefox extension Linky for a very long time, it is one of my most used extensions bar none. However, one of the most attractive features of it broke somewhere in the updating from Firefox 3-4, as far as i know. I didn't find out about it until recently, due to never bothering to update past Firefox 3 until just a little while ago. industrial clay

This feature was the 'Select already visited links' option, which also works in reverse, letting you unselect all links to pages you've already visited. (Or rather, have listed in your browser history)

Now, i am a complete noob when it comes to JavaScript, and i have very little knowledge about this type of programming, so i have no chance to fix this myself. This, is the reason i came here. I hope someone will be able to take a quick look at this code, and maybe tell me how to fix it, or make a workaround, or something. I really want to get it working again.

I am almost certain that the problem lies in this section of the code:
Code:
LinkySelect.prototype.checkVisited = function() {
var gGlobalHistory = opener.Components.classes["@mozilla.org/browser/global-history;1"].getService(Components.interfaces.nsIGlobalHistory);
var cbox = this.getChecked(document.getElementById("cvbox"));
var selectlinks = document.getElementById("selectlinks");
var last = selectlinks.getRowCount();
for (var i = 0; i < last; i++) {
var tmp = selectlinks.getItemAtIndex(i);
if (gGlobalHistory.isVisited(tmp.getAttribute("value"))) {
tmp.setAttribute("checked", this.setChecked(cbox));
}
}
this.updateInfo();
}
Also, the Error Console reports this;
Code:
Error: opener.Components.classes['@mozilla.org/browser/global-history;1'] is undefined
Source File: chrome://linky/content/select-links.js
Line: 28
I hope that will tell someone something. I almost feels like it tells me something, but it's been years and years since i last tried to study this type of programming.

Any help with this is appreciated. Thanks in advance for your time.

I want to download text file generated in a textarea

here my download.php file code structure goes :

<?php

if(empty($_POST['filename']) || empty($_POST['content'])){
exit;
}

$filename = preg_replace('/[^a-z0-9\-\_\.]/i','',$_POST['filename']);

header("Cache-Control: ");
header("Content-type: text/plain");
header('Content-Disposition: attachment; filename="'.$filename.'"');

echo $_POST['content'];

?>

and the javascript used


(function($){

$.generateFile = function(options){

options = options || {};

if(!options.script || !options.filename || !options.content){
throw new Error("Please enter all the required config options!");
}

var iframe = $('<iframe>',{
width:1,
height:1,
frameborder:0,
css:{
display:'none'
}
}).appendTo('body');


and the script.js

$(document).ready(function(){

$('#download').click(function(e){

$.generateFile({
filename : 'export.txt',
content : $('textarea').val(),
script : 'download.php'
});

e.preventDefault();
});

by these assets i created a web page consisting a TEXTAREA , by entering some text on the textarea and clicking on the download button , a text files is generated and downloaded on the user's system, I packed the source code as a CRX file to use it as a CHROME extension, but while using the extension,the files are'nt generated, while the webpage works absolutely fine !!!

Hello.

I have used the Firefox extension Linky for a very long time, it is one of my most used extensions bar none. However, one of the most attractive features of it broke somewhere in the updating from Firefox 3-4, as far as i know. I didn't find out about it until recently, due to never bothering to update past Firefox 3 until just a little while ago.

This feature was the 'Select already visited links' option, which also works in reverse, letting you unselect all links to pages you've already visited. (Or rather, have listed in your browser history)

Now, i am a complete noob when it comes to JavaScript, and i have very little knowledge about this type of programming, so i have no chance to fix this myself. This, is the reason i came here. I hope someone will be able to take a quick look at this code, and maybe tell me how to fix it, or make a workaround, or something. I really want to get it working again.

I am almost certain that the problem lies in this section of the code:
Code:

LinkySelect.prototype.checkVisited = function() {
	var gGlobalHistory = opener.Components.classes["@mozilla.org/browser/global-history;1"].getService(Components.interfaces.nsIGlobalHistory);
	var cbox = this.getChecked(document.getElementById("cvbox"));
	var selectlinks = document.getElementById("selectlinks");
	var last = selectlinks.getRowCount();
	for (var i = 0; i < last; i++) {
		var tmp = selectlinks.getItemAtIndex(i);
		if (gGlobalHistory.isVisited(tmp.getAttribute("value"))) {
			tmp.setAttribute("checked", this.setChecked(cbox));
		}
	}
	this.updateInfo();
}

Also, the Error Console reports this;
Code:

Error: opener.Components.classes['@mozilla.org/browser/global-history;1'] is undefined
Source File: chrome://linky/content/select-links.js
Line: 28

I hope that will tell someone something. I almost feels like it tells me something, but it's been years and years since i last tried to study this type of programming.

Any help with this is appreciated. Thanks in advance for your time.

The mounds of RegExp data will take me days to sift through can someone help me create a regular expression to find a file extension? (all characters after a period) I have already gotten this far: .+\. to find everything before and including the period; and I was hoping to integrate the caret to say everything but .+\. But I just can't get it to work...

Note:
I will be writing a file to the server with JScript ASP. The file name will be passed to the script that writes the file, and I want to make sure that in addition to removing any possible code from the line being written, that I also prevent an executable file from being created. I will be searching for certain extensions and returning if anything else is found.

Hi All,

I have written a chrome extension which will redirect to all hrefs for a given source urls in current tab.. But i don't know why all of a sudden it stops executing after reaching some page. I am attaching my code as attachment.
Can any one help me out.

Thanks in advance.

Hi,

I am kinda new to java scripting and here is what i am trying to do.

I have a folder "A" with 10 files, all with .txt extensions in it.
I want a java script to open all the 10 files in the folder "A" and change the extensions to .js and save it in a folder "B".

Can some one help. Thanks a lot in advance.