https://github.com/taq/pagechecker

Check if a HTML page content changed after it was loaded
https://github.com/taq/pagechecker

Last synced: about 1 month ago
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Check if a HTML page content changed after it was loaded

• Host: GitHub
• URL: https://github.com/taq/pagechecker
• Owner: taq
• License: gpl-2.0
• Created: 2014-04-30T12:01:39.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2014-06-12T12:00:31.000Z (over 10 years ago)
• Last Synced: 2023-04-11T08:51:16.145Z (over 1 year ago)
• Language: JavaScript
• Size: 195 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# PageChecker

Check if a HTML page content changed after it was loaded, applying some filters

to remove some contents that can change after it was loaded. Right now only

remove the `` tags.

## Why use it

We just got some frauds here with a virus on the computer user that changed the

content of the HTML page after it was loaded, changing some payment data without

the user knowing about it. As the virus takes some seconds to go to a server to

get the new page content, after the page is loaded a checksum is stored and

after some time (configured by user) the page contents is checked again to see

if it's the same.

## It works?

Yeah, we tested it with a compromissed computer. :-)

## What is needed to use it?

- JQuery - [http://jquery.com/](http://jquery.com/)

- JQuery MD5 - [https://github.com/placemarker/jQuery-MD5](https://github.com/placemarker/jQuery-MD5)

## Usage

Insert the `pagechecker.js` file on the `HEAD` tag and loaded it like this:

```

   $(document).ready(function() {

      new Bluefish.PageChecker(1500).change(function() {

         alert("Page content changed!");

      }).check(function() {

         console.log("Checking page on "+Date());

      });

   });

```

Where:

1. 1500 is 1500 miliseconds

2. `change` calls an optional function (the default is an `alert` with "Page changed!")

3. `check` calls an optional function to show when the page is being checked

It can also check a specified selector and not the complete HTML page, this way:

```

   pchecker = function() {

      return $("p").filter(function(idx, obj) { return $(obj).text().match(/paragraph/); });

   };

   new Bluefish.PageChecker(1500, pchecker).change(function() {

      alert("Paragraph content changed!");

   }).check(function() {

      // console.log("Checking page on "+Date());

   });

```