Monday, October 31, 2011

TABLE OF CONTENT

HTML Tutorial

HTML Tutorial

Examples in Each Chapter

This HTML tutorial contains hundreds of HTML examples.
With our online HTML editor, you can edit the HTML, and click on a button to view the result.

Example

<html>
<body>

<h1>My First Heading</h1>

<p>My first paragraph.</p>

</body>
</html>

HTML Introduction

HTML Introduction

Example

<html>
<body>

<h1>My First Heading</h1>

<p>My first paragraph.</p>

</body>
</html>


What is HTML?

HTML is a language for describing web pages.
  • HTML stands for Hyper Text Markup Language
  • HTML is not a programming language, it is a markup language
  • A markup language is a set of markup tags
  • HTML uses markup tags to describe web pages

HTML Tags

HTML markup tags are usually called HTML tags
  • HTML tags are keywords surrounded by angle brackets like <html>
  • HTML tags normally come in pairs like <b> and </b>
  • The first tag in a pair is the start tag, the second tag is the end tag
  • Start and end tags are also called opening tags and closing tags

HTML Documents = Web Pages

  • HTML documents describe web pages
  • HTML documents contain HTML tags and plain text
  • HTML documents are also called web pages
The purpose of a web browser (like Internet Explorer or Firefox) is to read HTML documents and display them as web pages. The browser does not display the HTML tags, but uses the tags to interpret the content of the page:
<html>
<body>

<h1>My First Heading</h1>

<p>My first paragraph.</p>

</body>
</html>

Example Explained

  • The text between <html> and </html> describes the web page
  • The text between <body> and </body> is the visible page content
  • The text between <h1> and </h1> is displayed as a heading
  • The text between <p> and </p> is displayed as a paragraph

HTML - Getting Started

HTML - Getting Started


What You Need

You don't need any tools to learn HTML at W3Schools.
  • You don't need an HTML editor
  • You don't need a web server
  • You don't need a web site

Editing HTML

HTML can be written and edited using many different editors like Dreamweaver and Visual Studio.
However, in this tutorial we use a plain text editor (like Notepad) to edit HTML. We believe using a plain text editor is the best way to learn HTML.

Create Your Own Test Web

If you just want to learn HTML, skip the rest of this chapter.
If you want to create a test page on your own computer, just copy the 3 files below to your desktop.
(Right click on each link, and select "save target as" or "save link as")
mainpage.htm
page1.htm
page2.htm
After you have copied the files, you can double-click on the file called "mainpage.htm" and see your first web site in action.

Use Your Test Web For Learning

We suggest you experiment with everything you learn at W3Schools by editing your web files with a text editor (like Notepad).
Note: If your test web contains HTML markup tags you have not learned, don't panic. You will learn all about it in the next chapters.

.HTM or .HTML File Extension?

When you save an HTML file, you can use either the .htm or the .html file extension. There is no difference, it is entirely up to you.

HTML Basic - 4 Examples

HTML Basic - 4 Examples


Don't worry if the examples use tags you have not learned.
You will learn about them in the next chapters.

HTML Headings

HTML headings are defined with the <h1> to <h6> tags.

Example

<h1>This is a heading</h1>
<h2>This is a heading</h2>
<h3>This is a heading</h3>


HTML Paragraphs

HTML paragraphs are defined with the <p> tag.

Example

<p>This is a paragraph.</p>
<p>This is another paragraph.</p>

HTML Links

HTML links are defined with the <a> tag.

Example

<a href="http://lean-html-easy-way.blogspot.com/">This is a link</a>

Note: The link address is specified in the href attribute.
(You will learn about attributes in a later chapter of this tutorial).

HTML Images

HTML images are defined with the <img> tag.

Example

<img src="w3schools.jpg" width="104" height="142" />

Note: The name and the size of the image are provided as attributes.

HTML Elements

HTML Elements


HTML documents are defined by HTML elements.

HTML Elements

An HTML element is everything from the start tag to the end tag:
Start tag * Element content End tag *
<p> This is a paragraph </p>
<a href="default.htm" > This is a link </a>
<br />
* The start tag is often called the opening tag. The end tag is often called the closing tag.

HTML Element Syntax

  • An HTML element starts with a start tag / opening tag
  • An HTML element ends with an end tag / closing tag
  • The element content is everything between the start and the end tag
  • Some HTML elements have empty content
  • Empty elements are closed in the start tag
  • Most HTML elements can have attributes
Tip: You will learn about attributes in the next chapter of this tutorial.

Nested HTML Elements

Most HTML elements can be nested (can contain other HTML elements).
HTML documents consist of nested HTML elements.

HTML Document Example

<html>

<body>
<p>This is my first paragraph.</p>
</body>

</html>
The example above contains 3 HTML elements.

HTML Example Explained

The <p> element:
<p>This is my first paragraph.</p>
The <p> element defines a paragraph in the HTML document.
The element has a start tag <p> and an end tag </p>.
The element content is: This is my first paragraph.
The <body> element:
<body>
<p>This is my first paragraph.</p>
</body>
The <body> element defines the body of the HTML document.
The element has a start tag <body> and an end tag </body>.
The element content is another HTML element (a p element).
The <html> element:
<html>

<body>
<p>This is my first paragraph.</p>
</body>

</html>
The <html> element defines the whole HTML document.
The element has a start tag <html> and an end tag </html>.
The element content is another HTML element (the body element).

Don't Forget the End Tag

Some HTML elements might display correctly even if you forget the end tag:
<p>This is a paragraph
<p>This is a paragraph
The example above works in most browsers, because the closing tag is considered optional.
Never rely on this. Many HTML elements will produce unexpected results and/or errors if you forget the end tag .

Empty HTML Elements

HTML elements with no content are called empty elements.
<br> is an empty element without a closing tag (the <br> tag defines a line break).
Tip: In XHTML, all elements must be closed. Adding a slash inside the start tag, like <br />, is the proper way of closing empty elements in XHTML (and XML).

HTML Tip: Use Lowercase Tags

HTML tags are not case sensitive: <P> means the same as <p>. Many web sites use uppercase HTML tags.
W3Schools use lowercase tags because the World Wide Web Consortium (W3C) recommends lowercase in HTML 4, and demands lowercase tags in XHTML.

HTML Attributes

HTML Attributes


Attributes provide additional information about HTML elements.

HTML Attributes

  • HTML elements can have attributes
  • Attributes provide additional information about an element
  • Attributes are always specified in the start tag
  • Attributes come in name/value pairs like: name="value"

Attribute Example

HTML links are defined with the <a> tag. The link address is specified in the href attribute:

Example

<a href="http://www.w3schools.com">This is a link</a>


Always Quote Attribute Values

Attribute values should always be enclosed in quotes.
Double style quotes are the most common, but single style quotes are also allowed.
Remark Tip: In some rare situations, when the attribute value itself contains quotes, it is necessary to use single quotes: name='John "ShotGun" Nelson'

HTML Tip: Use Lowercase Attributes

Attribute names and attribute values are case-insensitive.
However, the World Wide Web Consortium (W3C) recommends lowercase attributes/attribute values in their HTML 4 recommendation.
Newer versions of (X)HTML will demand lowercase attributes.

HTML Attributes Reference

A complete list of legal attributes for each HTML element is listed in our:
Complete HTML Reference
Below is a list of some attributes that are standard for most HTML elements:
Attribute Value Description
class classname Specifies a classname for an element
id id Specifies a unique id for an element
style style_definition Specifies an inline style for an element
title tooltip_text  Specifies extra information about an element (displayed as a tool tip)
For more information about standard attributes:

HTML Headings


Headings are important in HTML documents.

HTML Headings

Headings are defined with the <h1> to <h6> tags.
<h1> defines the most important heading. <h6> defines the least important heading.

Example

<h1>This is a heading</h1>
<h2>This is a heading</h2>
<h3>This is a heading</h3>
Note: Browsers automatically add some empty space (a margin) before and after each heading.

Headings Are Important

Use HTML headings for headings only. Don't use headings to make text BIG or bold.
Search engines use your headings to index the structure and content of your web pages.
Since users may skim your pages by its headings, it is important to use headings to show the document structure.
H1 headings should be used as main headings, followed by H2 headings, then the less important H3 headings, and so on.

HTML Lines

The <hr /> tag creates a horizontal line in an HTML page.

The hr element can be used to separate content:

Example

<p>This is a paragraph</p>
<hr />
<p>This is a paragraph</p>
<hr />
<p>This is a paragraph</p>


HTML Comments

Comments can be inserted into the HTML code to make it more readable and understandable. Comments are ignored by the browser and are not displayed.
Comments are written like this:

Example

<!-- This is a comment -->

Note: There is an exclamation point after the opening bracket, but not before the closing bracket.

HTML Tip - How to View HTML Source

Have you ever seen a Web page and wondered "Hey! How did they do that?"
To find out, right-click in the page and select "View Source" (IE) or "View Page Source" (Firefox), or similar for other browsers. This will open a window containing the HTML code of the page.


HTML Tag Reference

W3Schools' tag reference contains additional information about these tags and their attributes.
You will learn more about HTML tags and attributes in the next chapters of this tutorial.
Tag Description
<html> Defines an HTML document
<body> Defines the document's body
<h1> to <h6> Defines HTML headings
<hr /> Defines a horizontal line
<!--> Defines a comment

HTML Paragraphs



HTML documents are divided into paragraphs.

HTML Paragraphs

Paragraphs are defined with the <p> tag.

Example

<p>This is a paragraph</p>
<p>This is another paragraph</p>


Don't Forget the End Tag

Most browsers will display HTML correctly even if you forget the end tag:

Example

<p>This is a paragraph
<p>This is another paragraph

The example above will work in most browsers, but don't rely on it. Forgetting the end tag can produce unexpected results or errors.
Note: Future version of HTML will not allow you to skip end tags.

HTML Line Breaks

Use the <br /> tag if you want a line break (a new line) without starting a new paragraph:

Example

<p>This is<br />a para<br />graph with line breaks</p>

The <br /> element is an empty HTML element. It has no end tag.

<br> or <br />

In XHTML, XML, elements with no end tag (closing tag) are not allowed.
Even if <br> works in all browsers, writing <br /> instead works better in XHTML and XML applications.


HTML Output - Useful Tips

You cannot be sure how HTML will be displayed. Large or small screens, and resized windows will create different results.
With HTML, you cannot change the output by adding extra spaces or extra lines in your HTML code.
The browser will remove extra spaces and extra lines when the page is displayed. Any number of lines count as one line, and any number of spaces count as one space.


HTML Tag Reference

t HTML elements and their attributes.
Tag Description
<p> Defines a paragraph
<br /> Inserts a single line break

HTML Text Formatting


HTML Text Formatting

This text is bold

This text is big

This text is italic

This is computer output

This is subscript and superscript


HTML Formatting Tags

HTML uses tags like <b> and <i> for formatting output, like bold or italic text.
These HTML tags are called formatting tags (look at the bottom of this page for a complete reference).
Remark Often <strong> renders as <b>, and <em> renders as <i>.

However, there is a difference in the meaning of these tags:

<b> or <i> defines bold or italic text only.

<strong> or <em> means that you want the text to be rendered in a way that the user understands as "important". Today, all major browsers render strong as bold and em as italics. However, if a browser one day wants to make a text highlighted with the strong feature, it might be cursive for example and not bold!


HTML Text Formatting Tags

Tag Description
<b> Defines bold text
<big> Defines big text
<em> Defines emphasized text 
<i> Defines italic text
<small> Defines small text
<strong> Defines strong text
<sub> Defines subscripted text
<sup> Defines superscripted text
<ins> Defines inserted text
<del> Defines deleted text

HTML "Computer Output" Tags

Tag Description
<code> Defines computer code text
<kbd> Defines keyboard text 
<samp> Defines sample computer code
<tt> Defines teletype text
<var> Defines a variable
<pre> Defines preformatted text

HTML Citations, Quotations, and Definition Tags

Tag Description
<abbr> Defines an abbreviation
<acronym> Defines an acronym
<address> Defines contact information for the author/owner of a document
<bdo> Defines the text direction
<blockquote> Defines a long quotation
<q> Defines a short quotation
<cite> Defines a citation
<dfn> Defines a definition term

HTML Fonts

HTML Fonts


The HTML <font> Tag Should NOT be Used

The <font> tag is deprecated in HTML 4, and removed from HTML5.
The World Wide Web Consortium (W3C) has removed the <font> tag from its recommendations.
In HTML 4, style sheets (CSS) should be used to define the layout and display properties for many HTML elements.
The example below shows how the HTML could look by using the <font> tag:

Example

<p>
<font size="5" face="arial" color="red">
This paragraph is in Arial, size 5, and in red text color.
</font>
</p>

<p>
<font size="3" face="verdana" color="blue">
This paragraph is in Verdana, size 3, and in blue text color.
</font>
</p>

HTML Styles - CSS

HTML Styles - CSS


CSS is used to style HTML elements.

Look! Styles and colors

This text is in Verdana and red
This text is in Times and blue
This text is 30 pixels high



Styling HTML with CSS

CSS was introduced together with HTML 4, to provide a better way to style HTML elements.
CSS can be added to HTML in the following ways:
  • in separate style sheet files (CSS files)
  • in the style element in the HTML head section
  • in the style attribute in single HTML elements

Using the HTML Style Attribute

It is time consuming and not very practical to style HTML elements using the style attribute.
The preferred way to add CSS to HTML, is to put CSS syntax in separate CSS files.
However, in this HTML tutorial we will introduce you to CSS using the style attribute. This is done to simplify the examples. It also makes it easier for you to edit the code and try it yourself.

HTML Style Example - Background Color

The background-color property defines the background color for an element:

Example

<html>

<body style="background-color:yellow;">
<h2 style="background-color:red;">This is a heading</h2>
<p style="background-color:green;">This is a paragraph.</p>
</body>

</html>

HTML Style Example - Font, Color and Size

The font-family, color, and font-size properties defines the font, color, and size of the text in an element:

Example

<html>

<body>
<h1 style="font-family:verdana;">A heading</h1>
<p style="font-family:arial;color:red;font-size:20px;">A paragraph.</p>
</body>

</html>

HTML Style Example - Text Alignment

The text-align property specifies the horizontal alignment of text in an element:

Example

<html>

<body>
<h1 style="text-align:center;">Center-aligned heading</h1>
<p>This is a paragraph.</p>
</body>

Deprecated Tags and Attributes

In HTML 4, several tags and attributes were deprecated. Deprecated means that they will not be supported in future versions of HTML.
Remark The message is clear: Avoid using deprecated tags and attributes!
These tags and attributes should be avoided:
Tags Description
<center> Deprecated. Defines centered content
<font> and <basefont> Deprecated. Defines HTML fonts
<s> and <strike> Deprecated. Defines strikethrough text
<u> Deprecated. Defines underlined text
Attributes Description
align Deprecated. Defines the alignment of text
bgcolor Deprecated. Defines the background color
color Deprecated. Defines the text color
For all of the above: Use styles instead!

HTML Links

HTML Links

HTML Hyperlinks (Links)

A hyperlink (or link) is a word, group of words, or image that you can click on to jump to a new document or a new section within the current document.
When you move the cursor over a link in a Web page, the arrow will turn into a little hand.
Links are specified in HTML using the <a> tag.
The <a> tag can be used in two ways:
  1. To create a link to another document, by using the href attribute
  2. To create a bookmark inside a document, by using the name attribute

HTML Link Syntax

The HTML code for a link is simple. It looks like this:
<a href="url">Link text</a>
The href attribute specifies the destination of a link.

Example

<a href="http://lean-html-easy-way.blogspot.com//">my blog</a>
which will display like this: Visit my blog
Clicking on this hyperlink will send the user to my blog
Tip: The "Link text" doesn't have to be text. It can be an image or any other HTML element.

HTML Links - The target Attribute

The target attribute specifies where to open the linked document.
The example below will open the linked document in a new browser window or a new tab:

Example

<a href="http://lean-html-easy-way.blogspot.com/">Visit my blog</a>


HTML Links - The name Attribute

The name attribute specifies the name of an anchor.
The name attribute is used to create a bookmark inside an HTML document.
Note: The upcoming HTML5 standard suggest using the id attribute instead of the name attribute for specifying the name of an anchor. Using the id attribute actually works also for HTML4 in all modern browsers.
Bookmarks are not displayed in any special way. They are invisible to the reader.

Example

A named anchor inside an HTML document:
<a name="tips">Useful Tips Section</a>
Create a link to the "Useful Tips Section" inside the same document:
<a href="#tips">Visit the Useful Tips Section</a>
Or, create a link to the "Useful Tips Section" from another page:
<a href="http://www.w3schools.com/html_links.htm#tips">
Visit the Useful Tips Section</a>


Basic Notes - Useful Tips

Note: Always add a trailing slash to subfolder references. If you link like this: href="http://www.w3schools.com/html", you will generate two requests to the server, the server will first add a slash to the address, and then create a new request like this: href="http://www.w3schools.com/html/".
Tip: Named anchors are often used to create "table of contents" at the beginning of a large document. Each chapter within the document is given a named anchor, and links to each of these anchors are put at the top of the document.

HTML Link Tags

TagDescription
<a>Defines an anchor

HTML Images

HTML Images

Example

Norwegian Mountain Trip

Pulpit Rock

HTML Images - The <img> Tag and the Src Attribute

In HTML, images are defined with the <img> tag. 
The <img> tag is empty, which means that it contains attributes only, and has no closing tag.
To display an image on a page, you need to use the src attribute. Src stands for "source". The value of the src attribute is the URL of the image you want to display.
Syntax for defining an image:
<img src="url" alt="some_text"/>
The URL points to the location where the image is stored. An image named "boat.gif", located in the "images" directory on "www.w3schools.com" has the URL: http://www.w3schools.com/images/boat.gif.
The browser displays the image where the <img> tag occurs in the document. If you put an image tag between two paragraphs, the browser shows the first paragraph, then the image, and then the second paragraph.

HTML Images - The Alt Attribute

The required alt attribute specifies an alternate text for an image, if the image cannot be displayed.
The value of the alt attribute is an author-defined text:
<img src="boat.gif" alt="Big Boat" />
The alt attribute provides alternative information for an image if a user for some reason cannot view it (because of slow connection, an error in the src attribute, or if the user uses a screen reader).

HTML Images - Set Height and Width of an Image

The height and width attributes are used to specify the height and width of an image.
The attribute values are specified in pixels by default:
<img src="pulpit.jpg" alt="Pulpit rock" width="304" height="228" />
Tip: It is a good practice to specify both the height and width attributes for an image. If these attributes are set, the space required for the image is reserved when the page is loaded. However, without these attributes, the browser does not know the size of the image. The effect will be that the page layout will change during loading (while the images load).

Basic Notes - Useful Tips

Note: If an HTML file contains ten images - eleven files are required to display the page right. Loading images take time, so my best advice is: Use images carefully.
Note: When a web page is loaded, it is the browser, at that moment, that actually gets the image from a web server and inserts it into the page. Therefore, make sure that the images actually stay in the same spot in relation to the web page, otherwise your visitors will get a broken link icon. The broken link icon is shown if the browser cannot find the image.

HTML Image Tags

Tag Description
<img /> Defines an image
<map> Defines an image-map
<area /> Defines a clickable area inside an image-map

HTML Tables


HTML Tables

Apples 44%
Bananas 23%
Oranges 13%
Other 10%

Try it Yourself - Examples

Tables
How to create tables in an HTML document.
Table borders
How to specify different table borders.
(You can find more examples at the bottom of this page).

HTML Tables

Tables are defined with the <table> tag.
A table is divided into rows (with the <tr> tag), and each row is divided into data cells (with the <td> tag). td stands for "table data," and holds the content of a data cell. A <td> tag can contain text, links, images, lists, forms, other tables, etc.

Table Example

<table border="1">
<tr>
<td>row 1, cell 1</td>
<td>row 1, cell 2</td>
</tr>
<tr>
<td>row 2, cell 1</td>
<td>row 2, cell 2</td>
</tr>
</table>
How the HTML code above looks in a browser:
row 1, cell 1 row 1, cell 2
row 2, cell 1 row 2, cell 2


HTML Tables and the Border Attribute

If you do not specify a border attribute, the table will be displayed without borders. Sometimes this can be useful, but most of the time, we want the borders to show.
To display a table with borders, specify the border attribute:
<table border="1">
<tr>
<td>Row 1, cell 1</td>
<td>Row 1, cell 2</td>
</tr>
</table>


HTML Table Headers

Header information in a table are defined with the <th> tag.
All major browsers will display the text in the <th> element as bold and centered.
<table border="1">
<tr>
<th>Header 1</th>
<th>Header 2</th>
</tr>
<tr>
<td>row 1, cell 1</td>
<td>row 1, cell 2</td>
</tr>
<tr>
<td>row 2, cell 1</td>
<td>row 2, cell 2</td>
</tr>
</table>
How the HTML code above looks in your browser:
Header 1 Header 2
row 1, cell 1 row 1, cell 2
row 2, cell 1 row 2, cell 2


HTML Table Tags
Tag Description
<table> Defines a table
<th> Defines a table header
<tr> Defines a table row
<td> Defines a table cell
<caption> Defines a table caption
<colgroup> Defines a group of columns in a table, for formatting
<col /> Defines attribute values for one or more columns in a table
<thead> Groups the header content in a table
<tbody> Groups the body content in a table
<tfoot> Groups the footer content in a table

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

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

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.

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)

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)

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

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
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