The document describes various HTML form elements including <form>, <input>, <select>, <textarea>, and how to structure forms using these elements. It explains the differences between GET and POST methods for form submission, with GET appending data to the URL and POST not displaying data in the URL. It also covers the <frameset> and <iframe> elements for dividing documents into multiple frames or embedding an inline frame.

2.  <form>: Defines a form that is used to read data from
user.
Attributes:
 name=form_name( give a name to the control which is
sent to the server to be recognized and get the value.)
 action=script_page(Backend script ready to process
your passed data.)
 method=get|post(used to upload data)

3. Get:
 The default method when submitting form data is GET.
 However, when GET is used, the submitted form data will
be visible in the page address field.
Note:
 Appends form-data into the URL in name/value pairs
 The length of a URL is limited (about 3000 characters)
 Never use GET to send sensitive data! (will be visible in the
URL)
 Useful for form submissions where a user wants to bookmark the
result
 GET is better for non-secure data, like query strings in Google

4. Post:
 Always use POST if the form data contains sensitive or
personal information. The POST method does not
display the submitted form data in the page address
field.
Note:
 POST has no size limitations, and can be used to send
large amounts of data.
 Form submissions with POST cannot be bookmarked.

5.  Input Element <input>
 Select Element <select>
 Textarea Element <textarea>

6. <input> element can be displayed in several ways,
depending on the type attribute.
Attributes:
 type=text | password | email | number | date | file | checkbox
| radio | button | submit | reset | image
 name
 value
 readonly
 disabled
 size
 maxlength
 placeholder
 required
 checked(when type is checkbox or
radio)
 min and max (when type=number)
 src, width and height (when type is image)

7.  <select> defines a drop-down list.
Attributes:
 name
 size
 multiple
 <option> defines an option that can be selected.
Attributes:
 value
 selected

8.  <textarea> defines a multi-line input field.
Attributes:
 name
 rows
 cols

9.  A frame can be divided a web document into
multiple web documents.
 The <frameset> element holds one or
more <frame> elements. Each <frame> element
can hold a separate document.
Attributes of <frameset>:
 cols=pixels | % | *
 rows=pixels | % | *

10.  name=string(Specifies the name of a frame)
 src=URL(Specifies the URL of the document to show in a
frame)
 frameborder=0|1(Specifies whether or not to display a
border around a frame)
 marginheight=pixel(Specifies the top and bottom margins
of a frame)
 marginwidth=pixel(Specifies the left and right margins of a
frame)
 noresize (Specifies that a frame is not resizable)
 scrolling=yes|no|auto(Specifies whether or not to display
scrollbars in a frame)

11.  The <iframe> tag specifies an inline frame.
 An inline frame is used to embed another
document within the current HTML document.

12.  align=left|right|top|middle|bottom (Specifies the
alignment of an <iframe> according to
surrounding elements)
 height=pixels(Specifies the height of an
<iframe>)
 width=pixels(Specifies the width of an <iframe>)