2. HTML files or part of files made to be
filled in by viewer / reader for the purpose of
submitting information to the form’s
originator.
HTML Forms
3. CGI ( Common Gateway Interface) Script
is any program or set of commands
running on the Web server that receives
data from the Web page and then acts
on that data to perform a certain task.
4. Elements of Forms:
Input boxes – for text and
numerical entries
Radio buttons – also called
option buttons, to select a single
option from a predefined list
Selection lists – for long lists of
options, usually in a drop-down
list box
5. Check boxes – to specify an
item as either being present or
absent
Text areas – for extended
entries that might include several
lines of text
Submit and Reset buttons – to
either submit the form to the CGI
script or to reset the form to its
original state
6. CGI script can be written in variety of
computer languages such as the
following:
AppleScript
C / C++
Perl
The UNIX shell
TCL
Visual Basic
JavaScript
8. Working with Input Boxes
Input Box – is a single-line box into
which the user can enter text or
numbers.
Syntax:
<INPUT TYPE = Option NAME = Text>
where option is the type of input field, and Text is
the name assigned to the input field.
12. Creating a Password field
<INPUT TYPE = PASSWORD>
Password Field – is identical to an
input box except that the
characters typed by the user are
displayed as bullets or asterisks.
13. CREATING A SELECTION LIST
To create a selection list, use the
following set of HTML tags:
<SELECT NAME = Text>
<OPTION> Option 1
<OPTION> Option 2
<OPTION> Option 3
.
.
</SELECT>
Where the NAME property is the field name of the
selection list, and each <OPTION> tag represents
an entry in the list.
15. To allow the user to select multiple
items in the selection list, use the
following tag:
<SELECT MULTIPLE>
To display several items in the selection
list, or to change the selection list style
from a drop-down list box to a fully
displayed list box, use the following tag:
<SELECT SIZE = value>
where value is the number of items
displayed in the list box.
16. Working with Radio Buttons
Syntax:
<INPUT TYPE = RADIO NAME=Text VALUE=value>
Where text is the name assigned to the field
containing the radio button, and value is the value
of the radio button.
18. To create a radio button, use the
following HTML tag:
<SELECT TYPE=RADIO NAME=text VALUE=value>
Where the NAME property specifies the field containing the
radio button, and the VALUE property specifies the value
sent to the CGI script.
To make a particular radio button the
default option, use the following tag:
<SELECT TYPE=RADIO CHECKED>
19. WORKING WITH CHECK BOXES
To create a check box, use the following tag:
<SELECT TYPE=CHECKBOX NAME=Text VALUE=Value>
where the NAME property specifies the field containing the
check box, and the VALUE property specifies the value sent
to the CGI script if the check box is selected.
To make a check box selected by default, use
the following tag:
<SELECT TYPE=CHECKBOX CHECKED>
21. CREATING A TEXT AREA
To create a text area for extended text entry, use the
following tag:
<TEXTAREA> Default Text </TEXTAREA>
Where the Default Text is the text that initially appears in
the text area (this is optional)
To control how text is wrapped in a text area, use the
following tag:
<TEXTAREA WRAP=Option>
Where option is OFF, SOFT (or VIRTUAL) ,or HARD (or
PHYSICAL). OFF turns off text wrapping. SOFT
(VIRTUAL) turns text wrapping on, but does not send text
wrapping information to the Web server. HARD
(PHYSICAL) turns text wrapping on and also sends this
information to the Web server.
