Token Posts

JavaScript - AJAX / SJAX - Submit Form Data to PHP Script

2011-05-25T15:42:00.001+10:00

Below is a function I use to submit form data (POST) to a PHP script using Asynchronous / Synchronous JavaScript And XML.

function runSQL(div, script, data) {
  var ajax =window.ActiveXObject ?new ActiveXObject("Microsoft.XMLHTTP"):new XMLHttpRequest;
  if (div != "") {
    ajax.onreadystatechange = function () {
     if (ajax.readyState == 4) {document.getElementById(div).innerHTML = ajax.responseText}; //AJAX
    };
  }
  ajax.open("POST", script, div != '' ? true : false);
  if (data) {ajax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded")};
  ajax.send(data ? data : null);
  if (div == "") {
    return ajax.responseText; //SJAX
  } else {
    return;
  }
}

Example of AJAX call:

runSQL('DIV_Content', 'sql.php', 'action=getContents&page=Home&custom=1');

Example of SJAX call:

result = runSQL('', 'sql.php', 'action=getContents&page=Home&custom=1');
//Do something with result

Note: Using AJAX allows the JavaScript to continue executing however using SJAX forces JavaScript to wait for the result before continuing. This is useful if you need to do something with the result such as use it in a calculation elsewhere in JavaScript whereas the AJAX result can just be returned straight to the HTML div element as is, once it is ready.

jQuery - Tables - Show and Hide Columns

2011-05-19T16:48:00.000+10:00

You can hide and show columns in a table by specifying a column index where 1 is the first column in the table.

function toggleColumn(column) {
  $('#iTable tr *:nth-child('+ column +')').toggle();
}

Note: iTable is the name of the HTML table.
Note: The * is used to ensure you show / hide both the TH and TD tags.

jQuery - Datepicker - Disable Specific Dates

2011-05-06T16:31:00.000+10:00

You can disable specific dates with the jQuery Datepicker using the beforeShowDay event.

var unavailableDates = ["9-5-2011","14-5-2011","15-5-2011"];

function unavailable(date) {
  dmy = date.getDate() + "-" + (date.getMonth()+1) + "-" + date.getFullYear();
  if ($.inArray(dmy, unavailableDates) == -1) {
    return [true, ""];
  } else {
    return [false,"","Unavailable"];
  }
}

$('#iDate').datepicker({ beforeShowDay: unavailable });

Note: iDate in the last line is the name of the HTML form input element.

Windows XP - Repair Install

2011-04-21T12:18:00.001+10:00

Running a Windows XP repair install will reinstall windows over the top of your existing one keeping all your personal files and programs intact.

Step 1:

Boot your computer from the Windows XP CD.

Step 2:

After the setup loads the files you will have 3 options:

To set up Windows XP now, press ENTER.
To repair a Windows XP installation using Recovery Console, press R.
To quit Setup without installing Windows XP, press F3.

Press ENTER.

Step 3:

Press F8 to accept the "Windows XP Licensing Agreement".

Step 4:

Press R on the Windows installation you want to repair.

Setup will then copy files to your computer and reboot.

Step 5:

Let the computer boot. You will come to a screen that says "An exciting new look" where the setup will continue just like a new installation.

Notes:

You will not lose your personal files or programs when performing a repair install, only system files needed for Windows are replaced.

Some programs may need to be reinstalled after the repair has finished.

Call of Duty - Black Ops - Zombie Cheats for PC

2011-01-05T11:06:00.002+10:00

For Multi-player Zombies the only cheat you can use is the infinite ammo cheat.

Step 1:

Open the following file:

C:\Program Files\Steam\steamapps\common\call of duty black ops\players\config.cfg

Start a new line at the end of the file and add these lines.

bind 0 "sf_use_ignoreammo 1"

bind 9 "sf_use_ignoreammo 0"

Step 2:

Save and close the file then right click config.cfg and go to properties.

Make the file read-only by ticking the check box in the attributes section and click OK.

Step 3:

Start a game of Zombies and press the zero key to activate infinite ammunition. To deactivate it you can press the nine key.

Notes:

You must be the host to be able to activate the cheat, you can see who the host is by looking to see who has the lowest ping.

In this example "C:\" is the drive where Black Ops is installed.

For windows Vista/7 Steam will be located in the "Program Files (x86)" directory.

You can bind the cheat to any keys you wish such as F4 and F5 e.g.

bind F4 "sf_use_ignoreammo 1"

bind F5 "sf_use_ignoreammo 0"

Apache2 - DirectoryIndex

2010-10-09T16:27:00.001+10:00

Setting the DirectoryIndex for Apache2 in Linux can be done editing the following configuration file.

nano /etc/apache2/sites-available/default

Look for the following block of text and add the DirectoryIndex line shown in blue.

<Directory /var/www/>
  Options Indexes FollowSymLinks MultiViews
  AllowOverride None
  Order allow,deny
  allow from all
  DirectoryIndex index.php index.html index.htm
</Directory>

The file names are in order of priority. So in this example, index.php will be shown before index.html if both files exists in the same directory for the website.

Note: I am using nano, you may also use vi depending on your preference and Linux distro.

AS2 to AS3 - Common DisplayObject Properties

2010-10-02T21:10:00.006+10:00

Properties in AS3 now use CamelCase. Here are some common DisplayObject properties.

ActionScript 2

ActionScript 3

_x	x
_y	y
_width	width
_height	height
_xscale	scaleX
_yscale	scaleY
_xmouse	mouseX
_ymouse	mouseY
_name	name
_alpha	alpha
_visable	visable
_rotation	rotation
_root	root
_parent	parent

AS2 to AS3 - onEnterFrame

2010-10-01T21:00:00.010+10:00

The onEnterFrame method of AS2 is now done through the use of Event Listeners in AS3.

ActionScript 2

this.onEnterFrame = function() {
// Your code here
}

ActionScript 3

this.addEventListener(Event.ENTER_FRAME, myFunctionName);
function myFunctionName(e:Event):void {
// Your code here
}