Monday, October 31, 2011

HTML Lists

HTML Lists

The most common HTML lists are ordered and unordered lists:

HTML Lists

An ordered list:

  1. The first list item
  2. The second list item
  3. The third list item

An unordered list:

  • List item
  • List item
  • List item


HTML Unordered Lists

An unordered list starts with the <ul> tag. Each list item starts with the <li> tag.
The list items are marked with bullets (typically small black circles).
<ul>
<li>Coffee</li>
<li>Milk</li>
</ul>
How the HTML code above looks in a browser:
  • Coffee
  • Milk

HTML Ordered Lists

An ordered list starts with the <ol> tag. Each list item starts with the <li> tag.
The list items are marked with numbers.
<ol>
<li>Coffee</li>
<li>Milk</li>
</ol>
How the HTML code above looks in a browser:
  1. Coffee
  2. Milk

HTML Definition Lists

A definition list is a list of items, with a description of each item.
The <dl> tag defines a definition list.
The <dl> tag is used in conjunction with <dt> (defines the item in the list) and <dd> (describes the item in the list):
<dl>
<dt>Coffee</dt>
<dd>- black hot drink</dd>
<dt>Milk</dt>
<dd>- white cold drink</dd>
</dl>
How the HTML code above looks in a browser:
Coffee
- black hot drink
Milk
- white cold drink

Basic Notes - Useful Tips

Tip: Inside a list item you can put text, line breaks, images, links, other lists, etc.
HTML List Tags
Tag Description
<ol> Defines an ordered list
<ul> Defines an unordered list
<li> Defines a list item
<dl> Defines a definition list
<dt> Defines an item in a definition list
<dd> Defines a description of an item in a definition list
Posted by junaid khan at 10:17 AM 0 comments

HTML Forms

HTML Forms

HTML forms are used to pass data to a server.
A form can contain input elements like text fields, checkboxes, radio-buttons, submit buttons and more. A form can also contain select lists, textarea, fieldset, legend, and label elements.
The <form> tag is used to create an HTML form:
<form>
.
input elements
.
</form>

HTML Forms - The Input Element

The most important form element is the input element.
The input element is used to select user information.
An input element can vary in many ways, depending on the type attribute. An input element can be of type text field, checkbox, password, radio button, submit button, and more.
The most used input types are described below.

Text Fields

<input type="text" /> defines a one-line input field that a user can enter text into:
<form>
First name: <input type="text" name="firstname" /><br />
Last name: <input type="text" name="lastname" />
</form>
How the HTML code above looks in a browser:
First name:
Last name:
Note: The form itself is not visible. Also note that the default width of a text field is 20 characters. 

Password Field

<input type="password" /> defines a password field:
<form>
Password: <input type="password" name="pwd" />
</form>
How the HTML code above looks in a browser:
Password:
Note: The characters in a password field are masked (shown as asterisks or circles). 

Radio Buttons

<input type="radio" /> defines a radio button. Radio buttons let a user select ONLY ONE of a limited number of choices:
<form>
<input type="radio" name="sex" value="male" /> Male<br />
<input type="radio" name="sex" value="female" /> Female
</form>
How the HTML code above looks in a browser:
Male
Female

Checkboxes

<input type="checkbox" /> defines a checkbox. Checkboxes let a user select ONE or MORE options of a limited number of choices.
<form>
<input type="checkbox" name="vehicle" value="Bike" /> I have a bike<br />
<input type="checkbox" name="vehicle" value="Car" /> I have a car
</form>
How the HTML code above looks in a browser:
I have a bike
I have a car

Submit Button

<input type="submit" /> defines a submit button.
A submit button is used to send form data to a server. The data is sent to the page specified in the form's action attribute. The file defined in the action attribute usually does something with the received input:
<form name="input" action="html_form_action.asp" method="get">
Username: <input type="text" name="user" />
<input type="submit" value="Submit" />
</form>
How the HTML code above looks in a browser:
Username:
If you type some characters in the text field above, and click the "Submit" button, the browser will send your input to a page called "html_form_action.asp". The page will show you the received input.

HTML Form Tags

Tag Description
<form> Defines an HTML form for user input
<input /> Defines an input control
<textarea> Defines a multi-line text input control
<label> Defines a label for an input element
<fieldset> Defines a border around elements in a form
<legend> Defines a caption for a fieldset element
<select> Defines a select list (drop-down list)
<optgroup> Defines a group of related options in a select list
<option> Defines an option in a select list
<button> Defines a push button
Posted by junaid khan at 9:43 AM 0 comments

HTML Frames

HTML Frames

With frames, you can display more than one HTML document in the same browser window. Each HTML document is called a frame, and each frame is independent of the others.
The disadvantages of using frames are:
  • Frames are not expected to be supported in future versions of HTML
  • Frames are difficult to use. (Printing the entire page is difficult).
  • The web developer must keep track of more HTML documents

The HTML frameset Element

The frameset element holds one or more frame elements. Each frame element can hold a separate document.
The frameset element states HOW MANY columns or rows there will be in the frameset, and HOW MUCH percentage/pixels of space will occupy each of them.

The HTML frame Element

The <frame> tag defines one particular window (frame) within a frameset.
In the example below we have a frameset with two columns.
The first column is set to 25% of the width of the browser window. The second column is set to 75% of the width of the browser window. The document "frame_a.htm" is put into the first column, and the document "frame_b.htm" is put into the second column:
<frameset cols="25%,75%">
   <frame src="frame_a.htm" />
   <frame src="frame_b.htm" />
</frameset>
Note: The frameset column size can also be set in pixels (cols="200,500"), and one of the columns can be set to use the remaining space, with an asterisk (cols="25%,*").

Basic Notes - Useful Tips

Tip: If a frame has visible borders, the user can resize it by dragging the border. To prevent a user from doing this, you can add noresize="noresize" to the <frame> tag.
Note: Add the <noframes> tag for browsers that do not support frames.
Important: You cannot use the <body></body> tags together with the <frameset></frameset> tags! However, if you add a <noframes> tag containing some text for browsers that do not support frames, you will have to enclose the text in <body></body> tags! See how it is done in the first example below.
Posted by junaid khan at 9:41 AM 0 comments

HTML Iframes

HTML Iframes

An iframe is used to display a web page within a web page.
Syntax for adding an iframe:
<iframe src="URL"></iframe>
The URL points to the location of the separate page.

Iframe - Set Height and Width

The height and width attributes are used to specify the height and width of the iframe.
The attribute values are specified in pixels by default, but they can also be in percent (like "80%").

Example

<iframe src="demo_iframe.htm" width="200" height="200"></iframe>

Iframe - Remove the Border

The frameborder attribute specifies whether or not to display a border around the iframe.
Set the attribute value to "0" to remove the border:

Example

<iframe src="demo_iframe.htm" frameborder="0"></iframe>

Use iframe as a Target for a Link

An iframe can be used as the target frame for a link.
The target attribute of a link must refer to the name attribute of the iframe:

Example

<iframe src="demo_iframe.htm" name="iframe_a"></iframe>
<p><a href="http://www.w3schools.com" target="iframe_a">W3Schools.com</a></p>

HTML iframe Tag

Tag Description
<iframe> Defines an inline sub window (frame)
Posted by junaid khan at 9:32 AM 0 comments

Iframe

An iframe is used to display a web page within a web page.
Syntax for adding an iframe:
<iframe src="URL"></iframe>
The URL points to the location of the separate page.

Iframe - Set Height and Width

The height and width attributes are used to specify the height and width of the iframe.
The attribute values are specified in pixels by default, but they can also be in percent (like "80%").

Example

<iframe src="demo_iframe.htm" width="200" height="200"></iframe>


Iframe - Remove the Border

The frameborder attribute specifies whether or not to display a border around the iframe.
Set the attribute value to "0" to remove the border:

Example

<iframe src="demo_iframe.htm" frameborder="0"></iframe>


Use iframe as a Target for a Link

An iframe can be used as the target frame for a link.
The target attribute of a link must refer to the name attribute of the iframe:

Example

<iframe src="demo_iframe.htm" name="iframe_a"></iframe>
<p><a href="http://www.w3schools.com" target="iframe_a">W3Schools.com</a></p>

HTML iframe Tag

Tag Description
<iframe> Defines an inline sub window (frame)
Posted by junaid khan at 9:23 AM 0 comments

HTML Colors

HTML Colors

Colors are displayed combining RED, GREEN, and BLUE light.

Color Values

HTML colors are defined using a hexadecimal notation (HEX) for the combination of Red, Green, and Blue color values (RGB).
The lowest value that can be given to one of the light sources is 0 (in HEX: 00). The highest value is 255 (in HEX: FF).
HEX values are specified as 3 pairs of two-digit numbers, starting with a # sign.

Color Values

Color Color HEX Color RGB
#000000 rgb(0,0,0)
#FF0000 rgb(255,0,0)
#00FF00 rgb(0,255,0)
#0000FF rgb(0,0,255)
#FFFF00 rgb(255,255,0)
#00FFFF rgb(0,255,255)
#FF00FF rgb(255,0,255)
#C0C0C0 rgb(192,192,192)
#FFFFFF rgb(255,255,255)

Try it yourself »

16 Million Different Colors

The combination of Red, Green, and Blue values from 0 to 255, gives more than 16 million different colors (256 x 256 x 256).
If you look at the color table below, you will see the result of varying the red light from 0 to 255, while keeping the green and blue light at zero.
To see the full list of color mixes when RED varies from 0 to 255, click on one of the HEX or RGB values below.
Red Light Color HEX Color RGB
#000000  rgb(0,0,0) 
#080000  rgb(8,0,0) 
#100000  rgb(16,0,0) 
#180000  rgb(24,0,0) 
#200000  rgb(32,0,0) 
#280000  rgb(40,0,0) 
#300000  rgb(48,0,0) 
#380000  rgb(56,0,0) 
#400000  rgb(64,0,0) 
#480000  rgb(72,0,0) 
#500000  rgb(80,0,0) 
#580000  rgb(88,0,0) 
#600000  rgb(96,0,0) 
#680000  rgb(104,0,0) 
#700000  rgb(112,0,0) 
#780000  rgb(120,0,0) 
#800000  rgb(128,0,0) 
#880000  rgb(136,0,0) 
#900000  rgb(144,0,0) 
#980000  rgb(152,0,0) 
#A00000  rgb(160,0,0) 
#A80000  rgb(168,0,0) 
#B00000  rgb(176,0,0) 
#B80000  rgb(184,0,0) 
#C00000  rgb(192,0,0) 
#C80000  rgb(200,0,0) 
#D00000  rgb(208,0,0) 
#D80000  rgb(216,0,0) 
#E00000  rgb(224,0,0) 
#E80000  rgb(232,0,0) 
#F00000  rgb(240,0,0) 
#F80000  rgb(248,0,0) 
#FF0000  rgb(255,0,0) 

Shades of Gray

Gray colors are created by using an equal amount of power to all of the light sources.
To make it easier for you to select the correct shade, we have created a table of gray shades for you:
Gray Shades Color HEX Color RGB
#000000  rgb(0,0,0) 
#080808  rgb(8,8,8) 
#101010  rgb(16,16,16) 
#181818  rgb(24,24,24) 
#202020  rgb(32,32,32) 
#282828  rgb(40,40,40) 
#303030  rgb(48,48,48) 
#383838  rgb(56,56,56) 
#404040  rgb(64,64,64) 
#484848  rgb(72,72,72) 
#505050  rgb(80,80,80) 
#585858  rgb(88,88,88) 
#606060  rgb(96,96,96) 
#686868  rgb(104,104,104) 
#707070  rgb(112,112,112) 
#787878  rgb(120,120,120) 
#808080  rgb(128,128,128) 
#888888  rgb(136,136,136) 
#909090  rgb(144,144,144) 
#989898  rgb(152,152,152) 
#A0A0A0  rgb(160,160,160) 
#A8A8A8  rgb(168,168,168) 
#B0B0B0  rgb(176,176,176) 
#B8B8B8  rgb(184,184,184) 
#C0C0C0  rgb(192,192,192) 
#C8C8C8  rgb(200,200,200) 
#D0D0D0  rgb(208,208,208) 
#D8D8D8  rgb(216,216,216) 
#E0E0E0  rgb(224,224,224) 
#E8E8E8  rgb(232,232,232) 
#F0F0F0  rgb(240,240,240) 
#F8F8F8  rgb(248,248,248) 
#FFFFFF  rgb(255,255,255) 

Web Safe Colors?

Some years ago, when computers supported max 256 different colors, a list of 216 "Web Safe Colors" was suggested as a Web standard, reserving 40 fixed system colors.
The 216 cross-browser color palette was created to ensure that all computers would display the colors correctly when running a 256 color palette.
This is not important today, since most computers can display millions of different colors. Anyway, here is the list:
000000 000033 000066 000099 0000CC 0000FF
003300 003333 003366 003399 0033CC 0033FF
006600 006633 006666 006699 0066CC 0066FF
009900 009933 009966 009999 0099CC 0099FF
00CC00 00CC33 00CC66 00CC99 00CCCC 00CCFF
00FF00 00FF33 00FF66 00FF99 00FFCC 00FFFF
330000 330033 330066 330099 3300CC 3300FF
333300 333333 333366 333399 3333CC 3333FF
336600 336633 336666 336699 3366CC 3366FF
339900 339933 339966 339999 3399CC 3399FF
33CC00 33CC33 33CC66 33CC99 33CCCC 33CCFF
33FF00 33FF33 33FF66 33FF99 33FFCC 33FFFF
660000 660033 660066 660099 6600CC 6600FF
663300 663333 663366 663399 6633CC 6633FF
666600 666633 666666 666699 6666CC 6666FF
669900 669933 669966 669999 6699CC 6699FF
66CC00 66CC33 66CC66 66CC99 66CCCC 66CCFF
66FF00 66FF33 66FF66 66FF99 66FFCC 66FFFF
990000 990033 990066 990099 9900CC 9900FF
993300 993333 993366 993399 9933CC 9933FF
996600 996633 996666 996699 9966CC 9966FF
999900 999933 999966 999999 9999CC 9999FF
99CC00 99CC33 99CC66 99CC99 99CCCC 99CCFF
99FF00 99FF33 99FF66 99FF99 99FFCC 99FFFF
CC0000 CC0033 CC0066 CC0099 CC00CC CC00FF
CC3300 CC3333 CC3366 CC3399 CC33CC CC33FF
CC6600 CC6633 CC6666 CC6699 CC66CC CC66FF
CC9900 CC9933 CC9966 CC9999 CC99CC CC99FF
CCCC00 CCCC33 CCCC66 CCCC99 CCCCCC CCCCFF
CCFF00 CCFF33 CCFF66 CCFF99 CCFFCC CCFFFF
FF0000 FF0033 FF0066 FF0099 FF00CC FF00FF
FF3300 FF3333 FF3366 FF3399 FF33CC FF33FF
FF6600 FF6633 FF6666 FF6699 FF66CC FF66FF
FF9900 FF9933 FF9966 FF9999 FF99CC FF99FF
FFCC00 FFCC33 FFCC66 FFCC99 FFCCCC FFCCFF
FFFF00 FFFF33 FFFF66 FFFF99 FFFFCC FFFFFF

Posted by junaid khan at 9:21 AM 0 comments

Color Test

 

Color Names Supported by All Browsers

147 color names are defined in the HTML and CSS color specification (17 standard colors plus 130 more). The table below lists them all, along with their hexadecimal values.
Remark Tip: The 17 standard colors are: aqua, black, blue, fuchsia, gray, grey, green, lime, maroon, navy, olive, purple, red, silver, teal, white, and yellow.
Click on a color name (or a hex value) to view the color as the background-color along with different text colors:

Junaid Color Test

The background color of the table below is: "#FFFFFF", shown together with different text colors.

Colorname HEX RGB
AliceBlueF0F8FF240,248,255
AntiqueWhiteFAEBD7250,235,215
Aqua00FFFF0,255,255
Aquamarine7FFFD4127,255,212
AzureF0FFFF240,255,255
BeigeF5F5DC245,245,220
BisqueFFE4C4255,228,196
Black0000000,0,0
BlanchedAlmondFFEBCD255,235,205
Blue0000FF0,0,255
BlueViolet8A2BE2138,43,226
BrownA52A2A165,42,42
BurlyWoodDEB887222,184,135
CadetBlue5F9EA095,158,160
Chartreuse7FFF00127,255,0
ChocolateD2691E210,105,30
CoralFF7F50255,127,80
CornflowerBlue6495ED100,149,237
CornsilkFFF8DC255,248,220
CrimsonDC143C220,20,60
Cyan00FFFF0,255,255
DarkBlue00008B0,0,139
DarkCyan008B8B0,139,139
DarkGoldenRodB8860B184,134,11
DarkGrayA9A9A9169,169,169
DarkGreyA9A9A9169,169,169
DarkGreen0064000,100,0
DarkKhakiBDB76B189,183,107
DarkMagenta8B008B139,0,139
DarkOliveGreen556B2F85,107,47
DarkorangeFF8C00255,140,0
DarkOrchid9932CC153,50,204
DarkRed8B0000139,0,0
DarkSalmonE9967A233,150,122
DarkSeaGreen8FBC8F143,188,143
DarkSlateBlue483D8B72,61,139
DarkSlateGray2F4F4F47,79,79
DarkSlateGrey2F4F4F47,79,79
DarkTurquoise00CED10,206,209
DarkViolet9400D3148,0,211
DeepPinkFF1493255,20,147
DeepSkyBlue00BFFF0,191,255
DimGray696969105,105,105
DimGrey696969105,105,105
DodgerBlue1E90FF30,144,255
FireBrickB22222178,34,34
FloralWhiteFFFAF0255,250,240
ForestGreen228B2234,139,34
FuchsiaFF00FF255,0,255
GainsboroDCDCDC220,220,220
GhostWhiteF8F8FF248,248,255
GoldFFD700255,215,0
GoldenRodDAA520218,165,32
Gray808080128,128,128
Grey808080128,128,128
Green0080000,128,0
GreenYellowADFF2F173,255,47
HoneyDewF0FFF0240,255,240
HotPinkFF69B4255,105,180
IndianRed CD5C5C205,92,92
Indigo 4B008275,0,130
IvoryFFFFF0255,255,240
KhakiF0E68C240,230,140
LavenderE6E6FA230,230,250
LavenderBlushFFF0F5255,240,245
LawnGreen7CFC00124,252,0
LemonChiffonFFFACD255,250,205
LightBlueADD8E6173,216,230
LightCoralF08080240,128,128
LightCyanE0FFFF224,255,255
LightGoldenRodYellowFAFAD2250,250,210
LightGrayD3D3D3211,211,211
LightGreyD3D3D3211,211,211
LightGreen90EE90144,238,144
LightPinkFFB6C1255,182,193
LightSalmonFFA07A255,160,122
LightSeaGreen20B2AA32,178,170
LightSkyBlue87CEFA135,206,250
LightSlateGray778899119,136,153
LightSlateGrey778899119,136,153
LightSteelBlueB0C4DE176,196,222
LightYellowFFFFE0255,255,224
Lime00FF000,255,0
LimeGreen32CD3250,205,50
LinenFAF0E6250,240,230
MagentaFF00FF255,0,255
Maroon800000128,0,0
MediumAquaMarine66CDAA102,205,170
MediumBlue0000CD0,0,205
MediumOrchidBA55D3186,85,211
MediumPurple9370D8147,112,219
MediumSeaGreen3CB37160,179,113
MediumSlateBlue7B68EE123,104,238
MediumSpringGreen00FA9A0,250,154
MediumTurquoise48D1CC72,209,204
MediumVioletRedC71585199,21,133
MidnightBlue19197025,25,112
MintCreamF5FFFA245,255,250
MistyRoseFFE4E1255,228,225
MoccasinFFE4B5255,228,181
NavajoWhiteFFDEAD255,222,173
Navy0000800,0,128
OldLaceFDF5E6253,245,230
Olive808000128,128,0
OliveDrab6B8E23107,142,35
OrangeFFA500255,165,0
OrangeRedFF4500255,69,0
OrchidDA70D6218,112,214
PaleGoldenRodEEE8AA238,232,170
PaleGreen98FB98152,251,152
PaleTurquoiseAFEEEE175,238,238
PaleVioletRedD87093219,112,147
PapayaWhipFFEFD5255,239,213
PeachPuffFFDAB9255,218,185
PeruCD853F205,133,63
PinkFFC0CB255,192,203
PlumDDA0DD221,160,221
PowderBlueB0E0E6176,224,230
Purple800080128,0,128
RedFF0000255,0,0
RosyBrownBC8F8F188,143,143
RoyalBlue4169E165,105,225
SaddleBrown8B4513139,69,19
SalmonFA8072250,128,114
SandyBrownF4A460244,164,96
SeaGreen2E8B5746,139,87
SeaShellFFF5EE255,245,238
SiennaA0522D160,82,45
SilverC0C0C0192,192,192
SkyBlue87CEEB135,206,235
SlateBlue6A5ACD106,90,205
SlateGray708090112,128,144
SlateGrey708090112,128,144
SnowFFFAFA255,250,250
SpringGreen00FF7F0,255,127
SteelBlue4682B470,130,180
TanD2B48C210,180,140
Teal0080800,128,128
ThistleD8BFD8216,191,216
TomatoFF6347255,99,71
Turquoise40E0D064,224,208
VioletEE82EE238,130,238
WheatF5DEB3245,222,179
WhiteFFFFFF255,255,255
WhiteSmokeF5F5F5245,245,245
YellowFFFF00255,255,0
YellowGreen9ACD32154,205,50
Posted by junaid khan at 9:02 AM 0 comments
Subscribe to: Posts (Atom)
Online visitors counter users online