Key codes for java script

Key Code Reference Table

0		10		20	Caps Lock	30		40	Arrow Down
1		11		21		31		41
2		12		22		32		42
3		13	Enter	23		33	Page Up	43
4		14		24		34	Page Down	44
5		15		25		35	End	45	Insert
6		16	Shift	26		36	Home	46	Delete
7		17	Ctrl	27	Esc	37	Arrow Left	47
8	Backspace	18	Alt	28		38	Arrow Up	48	0
9	Tab	19	Pause/Break	29		39	Arrow Right	49	1
50	2	60		70	f	80	p	90	z
51	3	61	=+	71	g	81	q	91	Windows
52	4	62		72	h	82	r	92
53	5	63		73	i	83	s	93	Right Click
54	6	64		74	j	84	t	94
55	7	65	a	75	k	85	u	95
56	8	66	b	76	l	86	v	96	0 (Num Lock)
57	9	67	c	77	m	87	w	97	1 (Num Lock)
58		68	d	78	n	88	x	98	2 (Num Lock)
59	;:	69	e	79	o	89	y	99	3 (Num Lock)
100	4 (Num Lock)	110	. (Num Lock)	120	F9	130		140
101	5 (Num Lock)	111	/ (Num Lock)	121	F10	131		141
102	6 (Num Lock)	112	F1	122	F11	132		142
103	7 (Num Lock)	113	F2	123	F12	133		143
104	8 (Num Lock)	114	F3	124		134		144	Num Lock
105	9 (Num Lock)	115	F4	125		135		145	Scroll Lock
106	* (Num Lock)	116	F5	126		136		146
107	+ (Num Lock)	117	F6	127		137		147
108		118	F7	128		138		148
109	- (Num Lock)	119	F8	129		139		149
150		160		170		180		190	.>
151		161		171		181		191	/?
152		162		172		182	My Computer	192	`~
153		163		173		183	My Calculator	193
154		164		174		184		194
155		165		175		185		195
156		166		176		186		196
157		167		177		187		197
158		168		178		188	,<	198
159		169		179		189		199
200		210		220	\|	230		240
201		211		221	]}	231		241
202		212		222	'"	232		242
203		213		223		233		243
204		214		224		234		244
205		215		225		235		245
206		216		226		236		246
207		217		227		227		227
208		218		228		238		248
209		219	[{	229		239		249

AJAX Notes

AJAX

1.      AJAX= Asynchronous JavaScript and XML

2.      AJAX applications are Browser and platform independent

3.      XMLHttpRequest object: - is used to exchange data with a server behind the scenes. This means that it is possible to update parts of a web page without reloading the whole page.

4.      Syntax for creating XMLHttpRequest object:

Variable xmlhttp =new XMLHttpRequest ();      //for IE 7+, Firefox and chrome

Variable xmlhttp = new ActiveXObject (“Microsoft.XMLHTTP”);     //for IE 5 and IE 6

5.      To handle both type of browser:

Var xmlhttp;

If (window.XMLHTTPRequest)

{

// code for IE 7+, Firefox, chrome, opera, safari

            Xmlhttp= new XMLHTTPRequest ();

}

Else

{

            // code for IE 5 and IE 6

            Xmlhttp= new ActiveXObject (“Microsoft.XMLHTTP”);

}

6.      to send a request to a server, we use open() and send() methods of XMLHttpRequest object

xmlhttp.open (“GET”,”ajax.info.txt”,true);

xmlhttp.send ();

7.      Syntax is:

Open (method,URL,async)

Send (String)  //String is only used for post

8.      Two XMLHttpRequest object properties are:

a.      responseText

b.      responseXML

9.      the onereadystatechange event is triggered every time the ready state changes.

10.  Three important properties of the XMLHttpRequest object:

Property	Description
onreadystatechange	Stores a function (or the name of a function) to be called automatically each time the readyState property changes
readyState	Holds the status of the XMLHttpRequest. Changes from 0 to 4:  0: request not initialized  1: server connection established 2: request received  3: processing request  4: request finished and response is ready
status	200: "OK" 404: Page not found

JQuery short notes

1.      JQuery is a JavaScript library

2.      Features of JQuery

·        HTML element selection

·        HTML element manipulation

·        CSS manipulation

·        HTML event functions

·        JavaScript effect and animation

·        AJAX

·        Utilities

3.      To add  JQuery to a page

<head>

<script type=”text/javascript” src=”jquery.js”>

</script>

</head>

JQury tag should be inside <head > tag

4.      Two version of JQuery are available

·        Minified

·        Uncompressed( for debugging and testing purpose)

5.      To use hosted library from Google

<head>

<script =”http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js”>

</script>

</head>

6.      JQuery Syntax:

$(selector).action()

7.      Document Ready function skeleton

$(document).ready(function){

-         - - - - - - - -

-          - - - - - - - -

-          - - -- - - - - -

});

This is done to prevent any JQuery code from running before the document is finished loading

Ex.:-     Trying to hide an element that doesn’t exist

            Trying to get size of an image that is not loaded

8.                  JQuery selector allows to select HTML element by

·        Element name

·        Attribute name

·        Content

9.      Element selector example:

·          $("p") selects all <p> elements.

·          $("p.intro") selects all <p> elements with class="intro".

·          $("p#demo") selects all <p> elements with id="demo".

10.  Attribute selection Example: jQuery uses XPath expressions to select elements with given attributes.

·          $("[href]") select all elements with a href attribute.

·          $("[href='#']") select all elements with a href value equal to "#".

·          $("[href!='#']") select all elements with a href attribute NOT equal to "#".

·          $("[href$='.jpg']") select all elements with a href attribute that ends with ".jpg".

11.  CSS selection example:

·          $("p").css("background-color","blue");

12.  Some more Examples

Selector	Example	Selects
*	$("*")	All elements
.class.class	$(".intro.demo")	All elements with the classes "intro" and "demo"
:first	$("p:first")	The first p element
:last	$("p:last")	The last p element
:even	$("tr:even")	All even tr elements
:odd	$("tr:odd")	All odd tr elements
:eq(index)	$("ul li:eq(3)")	The fourth element in a list (index starts at 0)
:gt(no)	$("ul li:gt(3)")	List elements with an index greater than 3
:lt(no)	$("ul li:lt(3)")	List elements with an index less than 3
:not(selector)	$("input:not(:empty)")	All input elements that are not empty
:animated	$(":animated")	All animated elements
:contains(text)	$(":contains('W3Schools')")	All elements which contains the text
:empty	$(":empty")	All elements with no child (elements) nodes
[attribute=value]	$("[href='default.htm']")	All elements with a href attribute value equal to "default.htm"
[attribute$=value]	$("[href$='.jpg']")	All elements with a href attribute value ending with ".jpg"

13.  To put JQuery functions in a separate file is always a god idea. To use that js file

<head>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="my_jquery_functions.js"></script>
</head>

14.              The jQuery noConflict() method specifies a custom name (like jq), instead of using the dollar sign.

<html>

<head>

<script type="text/javascript" src="jquery.js"></script>

<script type="text/javascript">

var jq=jQuery.noConflict();

-          jq(document).ready(function(){

-          - - - - 

-          - - - -

  });

});

</script>

</head>

</html>

15.        The syntax of jQuery's method for making custom animations is:

$(selector).animate({params},[duration],[easing],[callback])

16.        JavaScript statements are executed line by line. However, with animations, the next       line of code can be run even though the animation is not finished. This can create errors. To prevent this, you can create a callback function. A callback function is executed after the current animation (effect) is finished.

17.        Changing HTML Content

·          $(selector).html(content)

·          $(selector).append(content)

·          $(selector).prepend(content)

·          $(selector).after(content)

·          $(selector).before(content)

18.  The css() method has three different syntaxes, to perform different tasks.

·          css(name) - Return CSS property value

·          css(name,value) - Set CSS property and value

·          css({properties}) - Set multiple CSS properties and values

 

19.  The jQuery load() method is a simple (but very powerful) AJAX function. It has the following syntax:

$(selector).load(url,data,callback)

20.  $.ajax(options) is the syntax of the low level AJAX function.

increasing the JBoss server start-up time in eclipse

For increasing the JBoss server start-up  time in eclipse:-

1.Click the Servers tab. Its located at the lower area of Eclipse workarea. Just beside Properties tab or near the Console tab.

2.Then double click the server(don't right click) which you are trying to start. It will open a dialog box. Expand the “Timeouts”. There you can find the option to increase the server start time. The default value is 50 seconds you can change it to an appropriate value(it is highlighted by green rectangle in image

I hope this solve your server time out issue.

:)