CODES

Writing to The HTML Document

The example below writes a <p> element with current date information to the HTML document:

<html>
<body>

<h1>My First Web Page</h1>

<script type="text/javascript">
document.write("<p>" + Date() + "</p>");
</script>

</body>
</html>

Changing HTML Elements

The example below writes the current date into an existing <p> element:

<html>
<body>

<h1>My First Web Page</h1>

<p id="demo"></p>

<script type="text/javascript">
document.getElementById("demo").innerHTML=Date();
</script>

</body>
</html>

What is JavaScript?

JavaScript was designed to add interactivity to HTML pages
JavaScript is a scripting language
A scripting language is a lightweight programming language
JavaScript is usually embedded directly into HTML pages
JavaScript is an interpreted language (means that scripts execute without preliminary compilation)
Everyone can use JavaScript without purchasing a license

Are Java and JavaScript the same?

NO!
Java and JavaScript are two completely different languages in both concept and design!
Java (developed by Sun Microsystems) is a powerful and much more complex programming language - in the same category as C and C++.

What can a JavaScript do?

JavaScript gives HTML designers a programming tool - HTML authors are normally not programmers, but JavaScript is a scripting language with a very simple syntax! Almost anyone can put small "snippets" of code into their HTML pages
JavaScript can put dynamic text into an HTML page - A JavaScript statement like this: document.write("<h1>" + name + "</h1>") can write a variable text into an HTML page
JavaScript can react to events - A JavaScript can be set to execute when something happens, like when a page has finished loading or when a user clicks on an HTML element
JavaScript can read and write HTML elements - A JavaScript can read and change the content of an HTML element
JavaScript can be used to validate data - A JavaScript can be used to validate form data before it is submitted to a server. This saves the server from extra processing
JavaScript can be used to detect the visitor's browser - A JavaScript can be used to detect the visitor's browser, and - depending on the browser - load another page specifically designed for that browser
JavaScript can be used to create cookies - A JavaScript can be used to store and retrieve information on the visitor's computer

JavaScript = ECMAScript

JavaScript is an implementation of the ECMAScript language standard. ECMA-262 is the official JavaScript standard.
JavaScript was invented by Brendan Eich at Netscape (with Navigator 2.0), and has appeared in all browsers since 1996.
The official standardization was adopted by the ECMA organization (an industry standardization association) in 1997.
The ECMA standard (called ECMAScript-262) was approved as an international ISO (ISO/IEC 16262) standard in 1998.
The development is still in progress.

PHP Syntax

Labels: PHP

Basic PHP Syntax

A PHP scripting block always starts with <?php and ends with ?>. A PHP scripting block can be placed anywhere in the document.
On servers with shorthand support enabled you can start a scripting block with <? and end with ?>.
For maximum compatibility, we recommend that you use the standard form (<?php) rather than the shorthand form.

<?php
?>

A PHP file normally contains HTML tags, just like an HTML file, and some PHP scripting code.
Below, we have an example of a simple PHP script which sends the text "Hello World" to the browser:

Each code line in PHP must end with a semicolon. The semicolon is a separator and is used to distinguish one set of instructions from another.
There are two basic statements to output text with PHP: echo and print. In the example above we have used the echo statement to output the text "Hello World".
Note: The file must have a .php extension. If the file has a .html extension, the PHP code will not be executed.

Comments in PHP

In PHP, we use // to make a single-line comment or /* and */ to make a large comment block.

PHP Introduction

Labels: PHP

PHP is a server-side scripting language

What is PHP?

PHP stands for PHP: Hypertext Preprocessor
PHP is a server-side scripting language, like ASP
PHP scripts are executed on the server
PHP supports many databases (MySQL, Informix, Oracle, Sybase, Solid, PostgreSQL, Generic ODBC, etc.)
PHP is an open source software
PHP is free to download and use

What is a PHP File?

PHP files can contain text, HTML tags and scripts
PHP files are returned to the browser as plain HTML
PHP files have a file extension of ".php", ".php3", or ".phtml"

What is MySQL?

MySQL is a database server
MySQL is ideal for both small and large applications
MySQL supports standard SQL
MySQL compiles on a number of platforms
MySQL is free to download and use

PHP + MySQL

PHP combined with MySQL are cross-platform (you can develop in Windows and serve on a Unix platform)

Why PHP?

PHP runs on different platforms (Windows, Linux, Unix, etc.)
PHP is compatible with almost all servers used today (Apache, IIS, etc.)
PHP is FREE to download from the official PHP resource: www.php.net
PHP is easy to learn and runs efficiently on the server side

Where to Start?

To get access to a web server with PHP support, you can:

Install Apache (or IIS) on your own server, install PHP, and MySQL
Or find a web hosting plan with PHP and MySQL support

An Example XML Document

Labels: XML

XML documents use a self-describing and simple syntax:

<?xml version="1.0" encoding="ISO-8859-1"?>
<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>
</note>

The first line is the XML declaration. It defines the XML version (1.0) and the encoding used (ISO-8859-1 = Latin-1/West European character set).

The next 4 lines describe 4 child elements of the root (to, from, heading, and body):

<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>

The image above represents one book in the XML below:

<bookstore>
<book category="COOKING">
    <title lang="en">Everyday Italian</title>
    <author>Giada De Laurentiis</author>
    <year>2005</year>
    <price>30.00</price>
</book>
<book category="CHILDREN">
    <title lang="en">Harry Potter</title>
    <author>J K. Rowling</author>
    <year>2005</year>
    <price>29.99</price>
</book>
<book category="WEB">
    <title lang="en">Learning XML</title>
    <author>Erik T. Ray</author>
    <year>2003</year>
    <price>39.95</price>
</book>
</bookstore>

The root element in the example is <bookstore>. All <book> elements in the document are contained within <bookstore>.
The <book> element has 4 children: <title>,< author>, <year>, <price>.

How Can XML be Used?

Labels: XML

XML Separates Data from HTML

If you need to display dynamic data in your HTML document, it will take a lot of work to edit the HTML each time the data changes.
With XML, data can be stored in separate XML files. This way you can concentrate on using HTML for layout and display, and be sure that changes in the underlying data will not require any changes to the HTML.
With a few lines of JavaScript code, you can read an external XML file and update the data content of your web page.

XML Simplifies Data Sharing

In the real world, computer systems and databases contain data in incompatible formats.
XML data is stored in plain text format. This provides a software- and hardware-independent way of storing data.
This makes it much easier to create data that can be shared by different applications.

XML Simplifies Data Transport

One of the most time-consuming challenges for developers is to exchange data between incompatible systems over the Internet.
Exchanging data as XML greatly reduces this complexity, since the data can be read by different incompatible applications.

XML Simplifies Platform Changes

Upgrading to new systems (hardware or software platforms), is always time consuming. Large amounts of data must be converted and incompatible data is often lost.
XML data is stored in text format. This makes it easier to expand or upgrade to new operating systems, new applications, or new browsers, without losing data.

XML Makes Your Data More Available

Different applications can access your data, not only in HTML pages, but also from XML data sources.
With XML, your data can be available to all kinds of "reading machines" (Handheld computers, voice machines, news feeds, etc), and make it more available for blind people, or people with other disabilities.

XML is Used to Create New Internet Languages

A lot of new Internet languages are created with XML.
Here are some examples:

XHTML
WSDL for describing available web services
WAP and WML as markup languages for handheld devices
RSS languages for news feeds
RDF and OWL for describing resources and ontology
SMIL for describing multimedia for the web

Introduction to XML

Labels: XML

What is XML?

XML stands for EXtensible Markup Language
XML is a markup language much like HTML
XML was designed to carry data, not to display data
XML tags are not predefined. You must define your own tags
XML is designed to be self-descriptive
XML is a W3C Recommendation

The Difference Between XML and HTML

XML is not a replacement for HTML.
XML and HTML were designed with different goals:

XML was designed to transport and store data, with focus on what data is
HTML was designed to display data, with focus on how data looks

HTML is about displaying information, while XML is about carrying information.

The Difference Between XML and HTML

XML is not a replacement for HTML.
XML and HTML were designed with different goals:

XML was designed to transport and store data, with focus on what data is
HTML was designed to display data, with focus on how data looks

HTML is about displaying information, while XML is about carrying information.

XML Does Not DO Anything

Maybe it is a little hard to understand, but XML does not DO anything. XML was created to structure, store, and transport information.
The following example is a note to Tove, from Jani, stored as XML:

<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>
</note>

The note above is quite self descriptive. It has sender and receiver information, it also has a heading and a message body.
But still, this XML document does not DO anything. It is just information wrapped in tags. Someone must write a piece of software to send, receive or display it.

With XML You Invent Your Own Tags

The tags in the example above (like <to> and <from>) are not defined in any XML standard. These tags are "invented" by the author of the XML document.
That is because the XML language has no predefined tags.
The tags used in HTML are predefined. HTML documents can only use tags defined in the HTML standard (like <p>, <h1>, etc.).
XML allows the author to define his/her own tags and his/her own document structure.

ASP Basic Hello world

Labels: ASP

Write Output to a Browser

An ASP file normally contains HTML tags, just like an HTML file. However, an ASP file can also contain server scripts, surrounded by the delimiters <% and %>.
Server scripts are executed on the server, and can contain any expressions, statements, procedures, or operators valid for the scripting language you prefer to use.

The response.write Command

The response.write command is used to write output to a browser. The following example sends the text "Hello World" to the browser:

There is also a shorthand method for the response.write command. The following example also sends the text "Hello World" to the browser:

Using VBScript in ASP

You can use several scripting languages in ASP. However, the default scripting language is VBScript:

Using JavaScript in ASP

To set JavaScript as the default scripting language for a particular page you must insert a language specification at the top of the page:

<%@ language="javascript"%>
<html>
<body>
<%
Response.Write("Hello World!")
%>
</body>
</html>

Note: JavaScript is case sensitive! You will have to write your ASP code with uppercase letters and lowercase letters when the language requires it.

ASP Introduction...

Labels: ASP

An ASP file can contain text, HTML tags and scripts. Scripts in an ASP file are executed on the server.

What you should already know

Before you continue you should have some basic understanding of the following:

HTML / XHTML
A scripting language like JavaScript or VBScript

What is ASP?

ASP stands for Active Server Pages
ASP is a Microsoft Technology
ASP is a program that runs inside IIS
IIS stands for Internet Information Services
IIS comes as a free component with Windows 2000
IIS is also a part of the Windows NT 4.0 Option Pack
The Option Pack can be downloaded from Microsoft
PWS is a smaller - but fully functional - version of IIS
PWS can be found on your Windows 95/98 CD

ASP Compatibility

To run IIS you must have Windows NT 4.0 or later
To run PWS you must have Windows 95 or later
ChiliASP is a technology that runs ASP without Windows OS
InstantASP is another technology that runs ASP without Windows

What is an ASP File?

An ASP file is just the same as an HTML file
An ASP file can contain text, HTML, XML, and scripts
Scripts in an ASP file are executed on the server
An ASP file has the file extension ".asp"

How Does ASP Differ from HTML?

When a browser requests an HTML file, the server returns the file
When a browser requests an ASP file, IIS passes the request to the ASP engine. The ASP engine reads the ASP file, line by line, and executes the scripts in the file. Finally, the ASP file is returned to the browser as plain HTML

What can ASP do for you?

Dynamically edit, change, or add any content of a Web page
Respond to user queries or data submitted from HTML forms
Access any data or databases and return the results to a browser
Customize a Web page to make it more useful for individual users
The advantages of using ASP instead of CGI and Perl, are those of simplicity and speed
Provide security - since ASP code cannot be viewed from the browser
Clever ASP programming can minimize the network traffic

Note: Because ASP scripts are executed on the server, the browser that displays the ASP file does not need to support scripting at all!

Examples in Each Chapter

Labels: HTML

This HTML tutorial contains hundreds of HTML examples.

<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 Headings

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

<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.

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

HTML Links

HTML links are defined with the <a> tag.

HTML Images

HTML images are defined with the <img> tag.

HTML Tags Chart

Labels: HTML

To use any of the following HTML tags, simply select the HTML code you'd like and copy and paste it into your web page.

Tag

Name

Code Example

Browser View

Nothing will show (Tip)

<a - anchor <a href="http://www.domain.com/">
Visit Our Site</a> Visit Our Site (Tip)

<b> bold <b>Example</b> Example

<big> big (text) <big>Example</big> Example (Tip)

<body> body of HTML document <body>The content of your HTML page</body> Contents of your web page (Tip)

<br> line break The contents of your page<br>The contents of your page The contents of your web page
The contents of your web page

center

<center>This will center your contents</center>

This will center your contents

<dd>

definition description

<dl>
<dt>Definition Term</dt>
<dd>Definition of the term</dd>
<dt>Definition Term</dt>
<dd>Definition of the term</dd>
</dl>

Definition Term: Definition of the term
Definition Term: Definition of the term

<dl>

definition list

<dl>
<dt>Definition Term</dt>
<dd>Definition of the term</dd>
<dt>Definition Term</dt>
<dd>Definition of the term</dd>
</dl>

Definition Term: Definition of the term
Definition Term: Definition of the term

<dt>

definition term

<dl>
<dt>Definition Term</dt>
<dd>Definition of the term</dd>
<dt>Definition Term</dt>
<dd>Definition of the term</dd>
</dl>

Definition Term: Definition of the term
Definition Term: Definition of the term

<em> emphasis This is an <em>Example</em> of using the emphasis tag This is an Example of using the emphasis tag

<font> font <font face="Times New Roman">Example</font> Example (Tip)

<font> font <font face="Times New Roman" size="4">Example</font> Example (Tip)

<font> font <font face="Times New Roman" size="+3" color="#ff0000">Example</font> Example (Tip)

<form>

form

<form action="mailto:you@yourdomain.com">
Name: <input name="Name" value="" size="10"><br>
Email: <input name="Email" value="" size="10"><br>
<center><input type="submit"></center>
</form>

heading 1
heading 2
heading 3
heading 4
heading 5
heading 6

<h1>Heading 1 Example</h1>
<h2>Heading 2 Example</h2>
<h3>Heading 3 Example</h3>
<h4>Heading 4 Example</h4>
<h5>Heading 5 Example</h5>
<h6>Heading 6 Example</h6>

<head> heading of HTML document <head>Contains elements describing the document</head> Nothing will show

<hr>

horizontal rule

<hr />

Contents of your web page (Tip)

Contents of your web page

<hr>

horizontal rule

<hr width="50%" size="3" />

Contents of your web page

<hr>

horizontal rule

<hr width="50%" size="3" noshade />

Contents of your web page

<hr>
(Internet
Explorer)

horizontal rule

<hr width="75%" color="#ff0000" size="4" />

Contents of your web page

<hr>
(Internet
Explorer)

horizontal rule

<hr width="25%" color="#6699ff" size="6" />

Contents of your web page

<html> hypertext markup language <html>
<head>
<meta>
<title>Title of your web page</title>
</head>
<body>HTML web page contents
</body>
</html> Contents of your web page

<i> italic <i>Example</i> Example

<img> image <img src="Earth.gif" width="41" height="41" border="0" alt="text describing the image" /> (Tip)

<input>

input field

Example 1:

<form method=post action="/cgi-bin/example.cgi">
<input type="text" size="10" maxlength="30">
<input type="Submit" value="Submit">
</form>

<input>
(Internet Explorer)

input field

Example 2:

<form method=post action="/cgi-bin/example.cgi">
<input type="text" style="color: #ffffff; font-family: Verdana; font-weight: bold; font-size: 12px; background-color: #72a4d2;" size="10" maxlength="30">
<input type="Submit" value="Submit">
</form>

<input>

input field

Example 3:

<form method=post action="/cgi-bin/example.cgi">
<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#8463ff"><input type="text" size="10" maxlength="30"></td><td bgcolor="#8463ff" valign="Middle"> <input type="image" name="submit" src="yourimage.gif"></td></tr> </table>
</form>

<input>

input field

Example 4:

<form method=post action="/cgi-bin/example.cgi">
Enter Your Comments:<br>
<textarea wrap="virtual" name="Comments" rows=3 cols=20 maxlength=100></textarea><br>
<input type="Submit" value="Submit">
<input type="Reset" value="Clear">
</form>

<input>

input field

Example 5:

<form method=post action="/cgi-bin/example.cgi">
<center>
Select an option:
<select>
<option >option 1</option>
<option selected>option 2</option>
<option>option 3</option>
<option>option 4</option>
<option>option 5</option>
<option>option 6</option>
</select><br>
<input type="Submit" value="Submit"></center>
</form>

<input>

input field

Example 6:

<form method=post action="/cgi-bin/example.cgi">
Select an option:<br>
<input type="radio" name="option"> Option 1
<input type="radio" name="option" checked> Option 2
<input type="radio" name="option"> Option 3
<br>
<br>
Select an option:<br>
<input type="checkbox" name="selection"> Selection 1
<input type="checkbox" name="selection" checked> Selection 2
<input type="checkbox" name="selection"> Selection 3
<input type="Submit" value="Submit">
</form>

<li>

list item

Example 1:

<menu>
<li type="disc">List item 1</li>
<li type="circle">List item 2</li>
<li type="square">List item 3</li>
</MENU>

Example 2:

<ol type="i">
<li>List item 1</li>
<li>List item 2</li>
<li>List item 3</li>
<li>List item 4</li>
</ol>

Example 1: (Tip)

List item 1
List item 2
List item 3

Example 2:

List item 1
List item 2
List item 3
List item 4

<marquee>
(Internet
Explorer) scrolling text <marquee bgcolor="#cccccc" loop="-1" scrollamount="2" width="100%">Example Marquee</marquee> Example Marquee (Tip)

<menu>

menu

<menu>
<li type="disc">List item 1</li>
<li type="circle">List item 2</li>
<li type="square">List item 3</li>
</menu>

List item 1
List item 2
List item 3

<ol>

ordered list

Numbered

<ol>
<li>List item 1</li>
<li>List item 2</li>
<li>List item 3</li>
<li>List item 4</li>
</ol>

Numbered Special Start

<ol start="5">
<li>List item 1</li>
<li>List item 2</li>
<li>List item 3</li>
<li>List item 4</li>
</ol>

Lowercase Letters

<ol type="a">
<li>List item 1</li>
<li>List item 2</li>
<li>List item 3</li>
<li>List item 4</li>
</ol>

Capital Letters

<ol type="A">
<li>List item 1</li>
<li>List item 2</li>
<li>List item 3</li>
<li>List item 4</li>
</ol>

Capital Letters Special Start

<ol type="A" start="3">
<li>List item 1</li>
<li>List item 2</li>
<li>List item 3</li>
<li>List item 4</li>
</ol>

Lowercase Roman Numerals

<ol type="i">
<li>List item 1</li>
<li>List item 2</li>
<li>List item 3</li>
<li>List item 4</li>
</ol>

Capital Roman Numerals

<ol type="I">
<li>List item 1</li>
<li>List item 2</li>
<li>List item 3</li>
<li>List item 4</li>
</ol>

Capital Roman Numerals Special Start

<ol type="I" start="7">
<li>List item 1</li>
<li>List item 2</li>
<li>List item 3</li>
<li>List item 4</li>
</ol>

Numbered

List item 1
List item 2
List item 3
List item 4

Numbered Special Start

List item 1
List item 2
List item 3
List item 4

Lowercase Letters

List item 1
List item 2
List item 3
List item 4

Capital Letters

List item 1
List item 2
List item 3
List item 4

Capital Letters Special Start

List item 1
List item 2
List item 3
List item 4

Lowercase Roman Numerals

List item 1
List item 2
List item 3
List item 4

Capital Roman Numerals

List item 1
List item 2
List item 3
List item 4

Capital Roman Numerals Special Start

List item 1
List item 2
List item 3
List item 4

listbox option

<form method=post action="/cgi-bin/example.cgi">
<center>
Select an option:
<select>
<option>option 1</option>
<option selected>option 2</option>
<option>option 3</option>
<option>option 4</option>
<option>option 5</option>
<option>option 6</option>
</select><br>
</center>
</form>

<p>

paragraph

This is an example displaying the use of the paragraph tag. <p> This will create a line break and a space between lines.

Attributes:

Example 1:<br>
<br>
<p align="left">
This is an example<br>
displaying the use<br>
of the paragraph tag.<br>
<br>
Example 2:<br>
<br>
<p align="right">
This is an example<br>
displaying the use<br>
of the paragraph tag.<br>
<br>
Example 3:<br>
<br>
<p align="center">
This is an example<br>
displaying the use<br>
of the paragraph tag.

This is an example displaying the use of the paragraph tag.

This will create a line break and a space between lines.

Attributes:

Example 1:

This is an example
displaying the use
of the paragraph tag.

Example 2:

This is an example
displaying the use
of the paragraph tag.

Example 3:

This is an example
displaying the use
of the paragraph tag.

<small> small (text) <small>Example</small> Example (Tip)

<strike> deleted text <strike>Example</strike> ~~Example~~

<strong> strong emphasis <strong>Example</strong> Example

<table>

table

Example 1:

<table border="4" cellpadding="2" cellspacing="2" width="100%">
<tr>
<td>Column 1</td>
<td>Column 2</td>
</tr>
</table>

Example 2: (Internet Explorer)

<table border="2" bordercolor="#336699" cellpadding="2" cellspacing="2" width="100%">
<tr>
<td>Column 1</td>
<td>Column 2</td>
</tr>
</table>

Example 3:

<table cellpadding="2" cellspacing="2" width="100%">
<tr>
<td bgcolor="#cccccc">Column 1</td>
<td bgcolor="#cccccc">Column 2</td>
</tr>
<tr>
<td>Row 2</td>
<td>Row 2</td>
</tr>
</table>

Example 1: (Tip)

Column 1

Column 2

Example 2: (Tip)

Column 1

Column 2

Example 3: (Tip)

Column 1	Column 2
Row 2	Row 2

<td>

table data

<table border="2" cellpadding="2" cellspacing="2" width="100%">
<tr>
<td>Column 1</td>
<td>Column 2</td>
</tr>
</table>

Column 1

Column 2

<th>

table header

<div align="center">
<table>
<tr>
<th>Column 1</th>
<th>Column 2</th>
<th>Column 3</th>
</tr>
<tr>
<td>Row 2</td>
<td>Row 2</td>
<td>Row 2</td>
</tr>
<tr>
<td>Row 3</td>
<td>Row 3</td>
<td>Row 3</td>
</tr>
<tr>
<td>Row 4</td>
<td>Row 4</td>
<td>Row 4</td>
</tr>
</table>
</div>

Column 1	Column 2	Column 3
Row 2	Row 2	Row 2
Row 3	Row 3	Row 3
Row 4	Row 4	Row 4

<title> document title <title>Title of your HTML page</title> Title of your web page will be viewable in the title bar. (Tip)

<tr>

table row

<table border="2" cellpadding="2" cellspacing="2" width="100%">
<tr>
<td>Column 1</td>
<td>Column 2</td>
</tr>
</table>

Column 1

Column 2

<tt> teletype <tt>Example</tt> Example

<u> underline <u>Example</u> Example

<ul>

unordered list

Example 1:<br>
<br>
<ul>
<li>List item 1</li>
<li>List item 2</li>
</ul>
<br>
Example 2:<br>
<ul type="disc">
<li>List item 1</li>
<li>List item 2</li>
<ul type="circle">
<li>List item 3</li>
<li>List item 4</li>
</ul>
</ul>

Example 1:

List item 1
List item 2

Example 2:

List item 1
List item 2
- List item 3
- List item 4

Hello World in Visual Basic

Labels: Visual Basic

Listing 1. Hello World in Visual Basic (HelloVB.vb)

' Allow easy reference to the System namespace classes.
Imports System

' This module houses the application's entry point.
Public Module modmain
   ' Main is the application's entry point.
   Sub Main()
     ' Write text to the console.
     Console.WriteLine ("Hello World using Visual Basic!")
   End Sub
End Module

"Hello, World" Visual Basic

Labels: Visual Basic

The following console program is the Visual Basic version of the traditional "Hello, World!" program, which displays the string "Hello, World!".

' A "Hello, World!" program in Visual Basic.
Module Hello
  Sub Main()
      MsgBox("Hello, World!") ' Display message on computer screen.
  End Sub
End Module

The important points of this program are the following:

Comments
The Main procedure
Input and output
Compilation and execution

The main Procedure

Every Visual Basic application must contain a procedure called Main. This procedure serves as the starting point and overall control for your application. It is called when your module is loaded.
There are four varieties of Main:

Sub Main()
Sub Main(ByVal cmdArgs() As String)
Function Main() As Integer
Function Main(ByVal cmdArgs() As String) As Integer

The most common variety of this procedure is Sub Main(). Unless you are creating a Windows Forms application, you must write the Main procedure for applications that run on their own.

To compile and run the program from the IDE

Create a Visual Basic console application project.
Copy the code into the project.
Choose the appropriate Build command from the Build menu, or press F5 to build and run (corresponding to Start in the Debug menu).

Info4us

Writing to The HTML Document

The example below writes a <p> element with current date information to the HTML document:

Changing HTML Elements

What is JavaScript?

Are Java and JavaScript the same?

Basic PHP Syntax

Comments in PHP

What is PHP?

What is a PHP File?

What is MySQL?

PHP + MySQL

Why PHP?

Where to Start?

XML Separates Data from HTML

XML Simplifies Data Sharing

XML Simplifies Data Transport

XML Simplifies Platform Changes

XML Makes Your Data More Available

XML is Used to Create New Internet Languages

What is XML?

The Difference Between XML and HTML

The Difference Between XML and HTML

With XML You Invent Your Own Tags

Write Output to a Browser

The response.write Command

Using VBScript in ASP

Using JavaScript in ASP

What is ASP?

ASP Compatibility

What is an ASP File?

How Does ASP Differ from HTML?

What can ASP do for you?

What is HTML?

HTML Tags

Example Explained

HTML Headings

HTML Links

HTML links are defined with the <a> tag.

HTML Images

To compile and run the program from the IDE

Categories

Blog Archive

Popular Posts