Tags are elements of the HTML language. Almost every kind of tag has an opening
symbol and a closing symbol. For example, the <HEAD> tag identifies the
beginning of heading information. It also has a closing tag </HEAD>.
<HTML></HTML>
This element tells browsers that the file is a HTML document. Each HTML document starts
with the tag <HTML>. This tag should be first thing in the document. It
has an associate closing tag </HTML> which must be the last tag in the
file.
<HEAD></HEAD>
The head contains important information about the document.
<TITLE></TITLE>
The title tag is an important tag. It is used to display a title on the
top of your browser window. Both the opening and the closing tags go between
the head tags.
The following example shows how these tags are coded:
<head><title>HTML For Beginners</title><meta name="Author"
content="Nongjian Zhou"><meta name="Description"
content="A very easy tutorial for HTML beginners"><meta name="Keywords"
content="html,tutorial,beginner,web design"></head>
<BODY></BODY>
The Body Tag is used to identify the start of the main portion of your webpage.
Between <BODY> </BODY> tags you will place all images, links, text,
paragraphs, and forms. We will explain each tag that is used within the body
of the HTML file.
Character, Paragraph and Position
<H#></H#>
There are six levels of headings, numbered 1 through 6. These tags are used
for the characters in the outlines. The biggest heading is <H1> and smallest
one is <H6>:
Paragraph tags (<P> opening tag and </P> closing tag) allow you
to place a paragraph. For example:
<p>Basic
Information</p>
The </P> closing tag may be omitted.
Align
The defaulted position is left justification. You can also use "ALIGN"
for justification:
<p ALIGN="center"> Paragraph will be centered</p><p ALIGN="left"> Paragraph will be left justified</p><p ALIGN="right">Paragraph will be right justified</p>
<CENTER></CENTER>
This kind of tags have capability of allowing you to center the text on the
homepage.
<center><p> Paragraph will be centered</p></center>
<BR>
This tag break whatever to be on the next line. The following is an example:
<p>Welcome To<br> My Homepage!</p>
<HR>
This tag adds a horizontal line or divider to your web site. An <HR>
tag makes the following divider:
The <hr> tag can be set as:
<hr width="450"
align="right" size="5">
You can add spaces in your text by using .
<BLOCKQUOTE></BLOCKQUOTE>
You can use this tag to format or remove a text by movinging both the left
and right sides of the paragraph.
<BLOCKQUOTE><H1>Welcome To John's Homepage!</H1>
<p>Content</p>
<p>Basic Information</p>
</BLOCKQUOTE>
<PRE></PRE>
Preformatted the text of the paragraph to exactly display what you typed in
the Web browser. For example:
<pre>
Item Price quantity
-----------------------------
A 34.9923
B 25.9513
-----------------------------
</pre>
Comments
The comment tag looks like this:
<!-- Comments -->
Nothing inside the comment tags will show up when your page is viewed.
Character Style
Character styles include physical and logical character styles, and Face, Size,
and Color. The following is character style table.
Type
Choice
function
Physical styles
<B>
Make text bold.
<I>
Make text italic.
<U>
Make text underline.
<Strike>
Make text strikethrough.
<Sup>
Make text superscript.
<Sub>
Make text subscript.
Teletype
Make text teletype.
Logical styles
<Strong>
Indicate the text is very important.
<Em>
Indicate the text is important.
<Cite>
Indicate that the text is from a book or other document.
<Address>
Indicate that the text is an address.
<Dfn>
Indicate that the text is a definition.
<Samp>
Indicate that the text is a sequence of literal characters.
Keyboard
Indicate that the text is keyboard input.
<Var>
Indicate that the text is a variable.
<Code>
Indicate that the text is code.
Font
Choice
Function
Face
Default
Make text display in the default font (Times New Roman)
of the Web browser.
Family
Type a list of fonts separated by commas (for example,
Helvetica, Arial, Courier). The text will display in the first listed
font found on the browser's system.
(Font name)
Make the text display in the font specified. (If the font
is not available on the browser's system, another font will be substituted.)
Size
1 through 7 (3 is the default)
Format text with 7 sizes where 7 is the largest size and
1 is the smallest.
Increase
Format text with the largest size (same as 7).
Decrease
Format text with the smallest size (same as 1).
Color
"#xxxxxx" or: White, Red, Blue and Others
Make the text a different color.
The tags below have the effect shown on the text in between.
This list starts with an opening list <UL> tag and ends the list with
a closing list </UL> tag. Between the <UL> and </UL>, you
enter the <LI> (list item) tag followed by the individual item; no closing
</LI> tag is needed. For example:
<UL><LI> Name
<LI> Phone
<LI> ID
</UL>
In the web browser the above code would appear three elements as:
Name
Phone
ID
Ordered Lists
An orderered list is similar to an unordered list, except it uses <OL>
instead of <UL>:
<OL><LI>College
<LI>Hight School
<LI>Elemantory School
</OL>
The output is:
College
Hight School
Elemantory School
Definition Lists
A definition list starts with <DL> and ends with </DL>. This list
consists of alternating a definition term and a definition definition. The definition
term is enclosed in <DT> </DT> and should precede the definition
definition. The definition definition is enclosed in <DD> </DD>.
So, a whole definition list looks like:
<DL><DT> term </DT><DD> definition </DD>
...
<DT> term </DT><DD> definition </DD></DL>
Links
Links allow you to navigation from one page to another on the internet or in
your local machine. Before you add a link to your page you need a URL of another
web site or a path of your local file that you want to link to. The link tag
also provides the capability to provide a way for linking an e-mail address.
To link to another file in your current dictionary, use <A HREF="name.html">
anchor text </A>. For example:
<A HREF="bscInfo.html">Basic Information</A>
If you want to link to a file that in another dictionary, you can write the
code like this:
<A HREF="path/name.html">Text</A>
You can create links from your webpage to other webpages on internet:
If you want link to the an email address and when you click it, then start
the mail program, you can write the a link like this:
<A HREF="mailto:internet101@go.com">Email us</A>
If a file has a large size, you may want to create links to different parts
of the page. To do that, first you must leave a pointer to the place in the
file you want to link to. The pointer looks like <A NAME="xyz">.
Then use <A HREF="#xyz"> tags. For example, you want to have
a link from the section D to the section "My current project" of your
page. Right before "My current project" you need to type <A NAME="M">.
At the section D of your page you add the following link: <A HREF="#M">.
The # symbol tells your browser to look for the link within the same document
instead of looking for another file. You can use any number or letter to replace
"M":
<BODY><A NAME="M"></A>My current projects
......
<A HREF="#M"></A>Click here to see my projects</A></BODY>
You can link to any place in other documents by the same way:
<A HREF="people.html#F3">Faculty Infomation</A>
You also can link a part of another page on the Internet if you can put a pointer
<A NAME=""> in it:
<A HREF="http://server/path/file#F3">
Image
Most Web browsers can display images that are in GIF, or JPEG format. To include
an image, enter:
<IMG SRC="ImageName">
For example: <IMG SRC="monky.gif"> The <IMG> tag
is used to define an image. This tag does not have a closing tag. The IMG part
tells the browser to add an image, The SRC tells your browser where to find
the image. You should include two other attributes on <IMG> tags
to tell your browser the size of the images. The HEIGHT and WIDTH
attributes let your browser set aside the appropriate space (in pixels) for
the images. For example:
<IMG SRC="monky.gif" HEIGHT=80 WIDTH=100>
You can put an image in the left or right of a page by using ALIGN..
For example:
<IMG SRC="ImageName" ALIGN="right">
By default the bottom of an image is aligned with the following text. You can
align images to the top, bottom or middle of a paragraph by using one of three
things: TOP, MIDDLE, BOTTOM, For example:
<IMG SRC="monky.gif" ALIGN="top">
Note: You must use "align", not "valign" to set for TOP,
MIDDLE, BOTTOM. It's different from the table alignment. We can use "vspace"
and "hspace" to adjust space around the picture:
<IMG SRC="monky.gif" vspace="50"
hspace="80">
The ALT attribute is one of IMG attributes. You can use the ALT attribute to
specify text to be displayed instead of an image. For example:
<IMG SRC="monky.gif" ALT="[monky]">
In this example, if someone cannot see the image, at least they will be able
to read the name of the image and know that it would be a monky because the
words "[monky]" is shown in the place.
An image can be used as hyperlinks just like plain text. The following is the
HTML code:
<A HREF="animal.html"><IMG SRC="monky.gif"></A>
The blue border that surrounds the image indicates that it's a clickable hyperlink.
If you do not want to display this border, you can add the BORDER attribute
and setting it to zero:
You can load an image from another webpage to your page. To display a image
on some one else's page, you need to find the URL:
<IMG SRC="http://www.abcd.com/image2.gif">
You also can use an image as a background. The tag to include a background
image is included in the <BODY> statement as an attribute:
<BODY BACKGROUND="ImageName">
A large inline image would slow down the loading of the main document. To
avoid it, you may have an image open as an external image. To include a reference
to an external image, enter:
<A HREF="ImageName">link anchor</A>
You can also use a smaller image as a link to a larger image. Enter:
You may want to have a specific color for the background, text, links, visited
links, and active links. In HTML, Colors are coded as a 6 digit hex RGB (red,
green, blue) number. A hexadecimal value in the range 00-FF. For example, 000000
is black (no color at all), FFFFFF is white (fully saturated with all three
colors). FF0000 is bright red, 0000FF is bright blue, and 00FF00 is pastel green.
You must have the "#" sign before the actual code. You can use the
attributes of the <BODY> tag to change the color of text, links, vlinks
(visited links), and alinks (active links). For example:
You can also use the name of the color instead of the corresponding RGB value
to indicate some basic colors. For example, "black", "red",
"blue", and "green" are all valid for use in place of RGB
values. Coloring specific text is done very much like changing the font size.
The tag is like:
<FONT color="code"> text </FONT>
This tag can be combined with the font size. For example:
The whole table is opened and closed with <TABLE> </TABLE>. Each
row is encapsulated in <TR> </TR>. Within the row are cells, enclosed
in <TD> </TD>. There can be as many rows and columns as you want
and as will fit on the screen. The browser will autoformat the rows, vertically
centering cell contents if necessary. If you want a cell to span more than one
column, enclose it in <TD COLSPAN=X> </TD>, where X indicate the
number of columns to span. Similarly, <TD ROWSPAN=X> </TD>
will cause the cell to span X rows. A border can be placed around all the cells
by using <TABLE BORDER=X> </TABLE>, where X is the
number of pixels thick the border should be. Let's see an example:
The value of width and height can be "xx%" or XX. For example: WIDTH="80%"
or WIDTH=450. "xx%" allow the table size changing while the window
size is changing. The value of Border can be zero. In this case, the table will
have no border. You can make a table looking like this:
The CELLSPACING attribute refers to the space between cells and should be in
pixels. The CELLPADDING attribute refers to the spacing within the cell in pixels
(the space between the cell walls and the contents of the cell).
Element
Description
<TABLE>
</TABLE>
defines a table in HTML. If the BORDER attribute
is present, your browser displays the table with a border.
<CAPTION>
</CAPTION>
defines the caption for the title of the
table. The default position of the title is centered at the top of the
table. The attribute ALIGN=BOTTOM can be used to position the caption
below the table. NOTE: Any kind of markup tag can be used in the caption.
<TR> </TR>
specifies a table row within a table. You
may define default attributes for the entire row: ALIGN (LEFT, CENTER,
RIGHT) and/or VALIGN (TOP, MIDDLE, BOTTOM). See Table Attributes at
the end of this table for more information.
<TH> </TH>
defines a table header cell. By default the
text in this cell is bold and centered. Table header cells may contain
other attributes to determine the characteristics of the cell and/or
its contents. See Table Attributes at the end of this table for more
information.
<TD> </TD>
defines a table data cell. By default the
text in this cell is aligned left and centered vertically. Table data
cells may contain other attributes to determine the characteristics
of the cell and/or its contents. See Table Attributes at the end of
this table for more information.
Attribute
Description
ALIGN (LEFT, CENTER, RIGHT)
Horizontal alignment of a cell.
VALIGN (TOP, MIDDLE, BOTTOM)
Vertical alignment of a cell.
COLSPAN=n
The number (n) of columns a cell spans.
ROWSPAN=n
The number (n) of rows a cell spans.
NOWRAP
Turn off word wrapping within a cell.
Form
Forms allow the user to enter information. For example, you can use forms to
collect user's names and email addresses. Forms begin with the tag <FORM>
and end with </FORM>.
You can use radio buttons to ask a question with one answer. For example, if
you wanted to ask "Which picture do you like?" and you wanted to have
the choices "monky", "flower", "girl", "building",
you would type:
Checkboxes let the user check things from a list. The form is:
<INPUT TYPE="checkbox" NAME="name" VALUE="text">
Notice that the difference between check boxes and radio buttons is that any
number of check boxes can be checked at one time while only one radio button
can be checked at a time. For example, if you wanted to ask "Which picture
do you like?" and you allow any number of check boxes can be checked at
one time, you would type:
Which picture do you like?
"picture" type="checkbox" value="monky"> Monky
"picture" type="checkbox" value="flower"> Flower
"picture" type="checkbox" value="girl"> Girl
"picture" type="checkbox" value="building"> Building
Submit and Reset
Other button types include submit and reset. "submit" is the button
the user presses to send in the form. "reset" clears the entire form
so the user can start over. For example:
This type allows users to type in text but instead of displaying the text that
they type astericks are displayed instead:
<INPUT TYPE="password" NAME="pass" SIZE="20">
Pull-Down Menu
You can ask a question with only one answer is by using a pull-down menu. For
example:
How old are you?
<SELECT NAME="age"><OPTION>1-15<OPTION SELECTED >16-21<OPTION>22-30<OPTION>31-45<OPTION>46-65<OPTION>66-80<OPTION>81-up
</SELECT>
The result is:
How old are you?
Scroll-Down Menu
Ther are two kinds of scroll-down menus. One is that you can only select one
item:
How old are you?
<SELECT NAME="age" SIZE=5><OPTION VALUE="1-15">1-15<OPTION VALUE="16-21">16-21<OPTION VALUE="22-30">22-30<OPTION VALUE="31-45">31-45<OPTION VALUE="46-65">46-65<OPTION VALUE="66-80">66-80<OPTION VALUE="81-up">81-up
</SELECT>
The result is:
How old are you?
The other menu is that you can select one or more items by holding down shift. For example:
What is your favorite thing?
(Hold <i>shift</i> to select more that one)
<SELECT NAME="reading" MULTIPLE size="3">reading
<OPTION VALUE="sports">sports
<OPTION VALUE="travelling">travelling
<OPTION VALUE="music">music
<OPTION VALUE="cooking">cooking
<OPTION VALUE="shopping">shopping
<OPTION VALUE="talking">talking
</SELECT><P>
The point is "multiple".
Frame
With frames, you can put a number of HTML pages into a single window, each
of frame can display a page. frames start and end with the <FRAMESET></FRAMSET>
tags. The <FRAMESET> tag can have two modifiers: ROWS and COLS to define
how big the frames will be. For example:
<html><head><title></title></head><framesetrows="64,*"><framename="banner"scrolling="no"noresizetarget="contents"src="top.htm"><framesetcols="150,*"><framename="contents"target="main"src="menu.htm"><framename="main"src="home.htm"></frameset><noframes><body><p>This page uses frames, but your browser doesn't
support them.</p></body></noframes></frameset></html>
Let's explain each element:
rows="64,*" means that the the first frame will take up 64
rows of the window and the second frame will take up the rest. An asterisk means
that the row will take up whatever space is left. You can use percentage to
replace length. For example: cols="30%,60%"
<frame> defines each individual frame.
name="..." gives the frame a name.
src="..." tells which page will be loaded in the frame.
target="..." allows you to make links appear in specific frames
or windows.
scrolling="yes|no|auto" allows you to control the scroll bars
on the frame. "yes" forces the frame to always have scroll bars. "no"
forces the frame to never have scroll bars. "auto" allows the browser
to decide if scroll bars are necessary. The default value is "auto".
noresize allows you to keep the frame from being resizable by the viewer.
</noframes> is used to create a frameless alternate. When the page is
viewed by a browser that does not support frames, everything EXCEPT what is
between the </noframes> tags is ignored.
There are also some "magic" TARGETs.
"_blank" will always open the link in a new window.
"_top" will open the link in the whole page, instead of in a single
frame.
"_self" makes the link open in the frame it's called from. This is
useful when the <BASE...> tag is used.
"_parent" opens the link in the immediate frameset parent of the frame
the link is called from.
Example:
<A HREF="ah.html" TARGET="_blank">text</A>
And, TARGET can also be added to the <FORM> tag to make the output from
the script got to the specified frame or window.
HTML for CodeProject Articles
(Added by Chris Maunder)
If you wish to submit articles to the Code Project, and you want to see your article
up ASAP, then the easier you make it for us, the faster it gets posted.
We use style sheets for our articles, so you do not need
to add any formatting at all. Typically we only use <h1> - <h5> for headings, <p>
for paragraphs, <code> for function names within text paragraphs, and <pre> for
blocks of code. That's it - no fancy fonts, no colors - it is all taken care of for you.
