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Wednesday, March 7, 2012

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>

Try it yourself »


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>

Try it yourself »


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>

Try it yourself »


HTML iframe Tag

TagDescription
<iframe>Defines an inline sub window (frame)

HTML Frames

HTML Frames


With frames, several Web pages can be displayed in the same browser window.
ATTENTION. Do not expect frames to be supported in future versions of HTML.

Examples

Try-It-Yourself Examples

Vertical frameset
How to make a vertical frameset with three different documents.
Horizontal frameset
How to make a horizontal frameset with three different documents.
(You can find more examples at the bottom of this page)

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.

Examples

More Examples

How to use the <noframes> tag
How to use the <noframes> tag (for browsers that do not support frames).
Nested framesets
How to create a frameset with three documents, and how to mix them in rows and columns.
Frameset with noresize="noresize"
How to use the noresize attribute. Move the mouse over the borders between the frames and notice that you cannot move the borders.
Navigation frame
How to make a navigation frame. The navigation frame contains a list of links with the second frame as the target. The file called "tryhtml_contents.htm" contains three links. The source code of the links:
<a href ="frame_a.htm" target ="showframe">Frame a</a><br>
<a href ="frame_b.htm" target ="showframe">Frame b</a><br>
<a href ="frame_c.htm" target ="showframe">Frame c</a>
The second frame will show the linked document.
Jump to a specified section within a frame
Two frames. One of the frames has a source to a specified section in a file. The specified section is made with <a name="C10"> in the "link.htm" file.
Jump to a specified section with frame navigation
Two frames. The navigation frame (content.htm) to the left contains a list of links with the second frame (link.htm) as a target. The second frame shows the linked document. One of the links in the navigation frame is linked to a specified section in the target file. The HTML code in the file "content.htm" looks like this: <a href ="link.htm" target ="showframe">Link without Anchor</a><br><a href ="link.htm#C10" target ="showframe">Link with Anchor</a>.

HTML Frame Tags

TagDescription
<frameset>Defines a set of frames
<frame />Defines a sub window (a frame)
<noframes>Defines a noframe section for browsers that do not handle frames

HTML Forms and Input

HTML Forms and Input


HTML Forms are used to select different kinds of user input.

Examples

Try it Yourself - Examples

Create text fields
How to create text fields. The user can write text in a text field.
Create password field
How to create a password field.
(You can find more examples at the bottom of this page)

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.

Try it More Input Examples

Radio buttons
How to create radio buttons.
Checkboxes
How to create checkboxes. A user can select or unselect a checkbox.
Simple drop-down list
How to create a simple drop-down list.
Drop-down list with a pre-selected value
How to create a drop-down list with a pre-selected value.
Textarea
How to create a multi-line text input control. In a text-area the user can write an unlimited number of characters.
Create a button
How to create a button.

Try it Form Examples

Fieldset around form-data
How to create a border around elements in a form.
Form with text fields and a submit button
How to create a form with two text fields and a submit button.
Form with checkboxes
How to create a form with two checkboxes and a submit button.
Form with radio buttons
How to create a form with two radio buttons, and a submit button.
Send e-mail from a form
How to send e-mail from a form.

HTML Form Tags

TagDescription
<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 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

Examples

Try-It-Yourself Examples

Unordered list
How to create an unordered list in an HTML document.
Ordered list
How to create an ordered list in an HTML document.
(You can find more examples at the bottom of this page).

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.

Examples

More Examples

Different types of ordered lists
Demonstrates different types of ordered lists.
Different types of unordered lists
Demonstrates different types of unordered lists.
Nested list
Demonstrates how you can nest lists.
Nested list 2
Demonstrates a more complicated nested list.
Definition list
Demonstrates a definition list.

HTML List Tags

TagDescription
<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

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i wanted to ask from the viewers

if ther any subject thet you read and want continue reading and its not completed yet please let me know by comment or email

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