Dynamic HTML and JavaScript Introduction

Introduction to DHTML and JavaScript

• Focus on client-side dynamic HTML (DHTML) to improve web application interactivity and engagement.
• Enables the implementation of dynamic behaviors in web interfaces.
• Students will learn to write basic inline JavaScript scripts to enhance webpage functionality and appearance.
• Learning outcomes include designing pages with dynamic behaviors and understanding JavaScript functions.

What is DHTML?

• Dynamic HTML combines HTML, CSS, and JavaScript to create interactive web pages.
• Allows functionalities like changing text color on mouse hover and allowing drag-and-drop features.
• Based on standard HTML 4.0 specifications.
• Facilitates user-interactive elements that resemble desktop applications.

Inbuilt Dynamic HTML Elements

• Javascript provides methods like document.write() to output dynamic data (e.g., current date).
• innerHTML property allows easy modification of HTML content (e.g., changing text inside elements).
• Attributes can be changed dynamically via JavaScript, such as the src of an image.

Scripting Languages

• Scripting languages automate task execution within runtime environments, often interpreted rather than compiled.
• Scripts are not visible to users but alter website behavior based on user interactions.

What is JavaScript?

• JavaScript is a versatile scripting language used for creating dynamic and interactive web content.
• Enables functionalities such as multimedia control, content updates, and rendering animations on web pages.

Client-Side Programming

• Client-side scripts run in the user's browser, allowing direct access to source code.
• Useful for novices to learn and understand basic scripting, particularly JavaScript.

Inline JavaScript Syntax

• Inline JavaScript embeds script within HTML pages, either in the head or body sections.
• Event handlers like onclick can trigger JavaScript functions, altering HTML content dynamically.

JavaScript Functions and Procedures

• Functions are declared using the function keyword and can execute specific tasks based on parameters.
• Procedures in programming define a set of steps to achieve a result, such as adding two numbers.

Variables, Data Types, and Calculations

• JavaScript supports multiple data types: numbers, strings, objects, and booleans.
• Variables can store various types and dynamically change their type throughout the program.
• Strings can contain characters and can be defined with single or double quotes.
• Boolean values represent true or false states, useful in conditional statements.

Conditional Statements

• Conditional statements (if, else, switch) allow different code execution based on conditions.
• if for executing blocks based on true conditions, and else for when conditions are false.
• The switch statement executes different blocks based on varying conditions.

Additional JavaScript Concepts

• Functions can take parameters, enabling customizable behavior based on input values.
• Input popups facilitate user interaction, collecting data for processing within scripts.
• Data type conversions are necessary for manipulating and comparing different data forms effectively.### JavaScript Control Structures
• Conditional statements allow execution of code blocks based on true or false evaluations.
• Example:
  • If hour < 18, set greeting to "Good day"; else, set to "Good evening".

JavaScript Functions and Event Handling

• Functions can be defined to perform actions when triggered by events like button clicks.
• Example function myFunction() alerts "Hello".

Timing Control Functions

• setTimeout():

  • Executes a function after a specified delay in milliseconds.
  • Example: myVar = setTimeout(myFunction, 3000); can be stopped using clearTimeout(myVar).

• setInterval():

  • Repeats execution of a function at a defined interval.
  • Used for dynamic content updates, e.g., displaying current time every second using setInterval(myTimer, 1000).

jQuery Library

• jQuery simplifies JavaScript with built-in functionalities.
• Enables manipulation of HTML, CSS, and supports AJAX operations.
• Advantages include reducing code length and enhancing code reusability.

jQuery Syntax and Selectors

• Basic jQuery syntax: $(selector).action().
• Selectors:
  • $("*") selects all elements.
  • $("p.intro") selects paragraph elements with class 'intro'.

jQuery Functions and Event Handling

• Easy event handling and manipulations done using ready function for DOM operations.
• Example: To hide paragraphs upon clicking a button: $("button").click(function(){ $("p").hide(); });.

jQuery For Form Validation

• jQuery is widely used for input validation in forms to enhance user experience.
• Example validation code enforces required fields with specific error messages.

Web Hosting Basics

• Web hosting refers to providing technologies to store and view websites online.
• Hosting types include UNIX and Windows platforms, each supporting different scripting and database technologies.

Windows Hosting

• Utilizes Microsoft technologies like ASP, ASP.NET, and MSSQL for server-side scripting.
• ASP enables dynamic web page creation with embedded scripting.

UNIX and Linux Hosting

• UNIX is the original web server OS known for stability and reliability.
• Linux is based on Unix and offers affordability and a wide feature set for hosting services.

Web Servers and Utilities

• Web servers respond to browser requests by delivering web content.
• Examples: Apache HTTP Server (open-source) and Microsoft IIS (for Windows-based hosting).
• Purpose: Store and manage access to web content; also used in various specialized servers (gaming, storage, etc.).### Web Server Response Types
• Web servers respond by sending files associated with requested URLs or generating responses via scripts that communicate with databases.
• When a web page is requested, the server searches for it and sends an HTTP response; if not found, an "Error 404 Not Found" is sent.
• For other resources, the web server connects with the application server and database to create the HTTP response.

Internet Service Provider (ISP)

• An ISP is a company providing internet access and connects customers via technologies like dial-up, DSL, cable modem, or wireless.
• ISPs may offer email accounts allowing communication through their servers.

Apache HTTP Server

• Apache is a widely used, open-source web server compatible with both Windows and Unix systems.
• Installation packages for Apache can include additional components like PHP and Python.
• Most Linux distributions come with Apache included; installation demos are available for platforms like Ubuntu.

Internet Information Services (IIS)

• IIS is a web server for Windows, enabling users to publish web pages and applications on local computers.
• It is not pre-installed on Windows operating systems by default; installation demos are provided.

Publishing in IIS

• Create a homepage file named "Default.htm" or "Default.asp" and copy it to the default publishing directory, typically found at \Inetpub\wwwroot.
• Visitors can access the site using either the computer name or numerical IP if a name resolution system is unavailable.
• For FTP publishing, files are copied to \Inetpub\Ftproot with similar access protocols.

Domain Name Registration

• A domain name, like "microsoft.com," is unique to a website and necessary for user accessibility through browsers and search engines.
• Domain names must be registered to be part of a large register, linking them to a specific internet IP address via DNS.

Web Hosting Options

• Shared Servers host multiple sites on one computer, offering lower costs but shared resources that can affect performance.
• Dedicated Servers provide exclusive access to resources, ideal for high-traffic websites, but at higher costs.
• Virtual Private Servers (VPS) offer a middle ground, segmenting a server into virtual servers, allowing dedicated resources without the full cost of dedicated hosting.

Web Server Ports and Configurations

• Web servers utilize numbered ports, typically port 80 for HTTP services.
• Configuration demos of Apache and IIS ports are available for instructional purposes.

Remote Login Protocols

• Remote login allows users to access host machines; common protocols include TELNET and SSH.
• TELNET establishes a connection to remote machines over TCP but lacks security.
• SSH (Secure Shell) offers encrypted communication and more flexible command execution, ensuring secure connections.

GUI Web Server Control and cPanel

• Control panels like cPanel assist in managing web hosting environments, providing operations like DNS management, email management, and database administration.
• cPanel is a popular web-based control panel with extensive functionalities, including account management, hosting plans, and security configurations.

File Permissions in Unix/Linux

• File permissions dictate access levels, categorized as Read (r), Write (w), and Execute (x).
• Permissions are assigned to user groups: Owner (User), Group (related files), and World (everyone else).

Website Maintenance Importance

• Regular website maintenance is essential to retain customer engagement, update content, and enhance search engine rankings.
• A well-maintained website reflects business value and operational integrity, requiring consistent updates and management.

Document Object Model (DOM)

• The DOM is an API for HTML/XML documents, enabling browsers to create a structured model of web pages.
• JavaScript interacts with the DOM to manipulate HTML elements and respond to events, creating dynamic webpages.

MVC Architecture and AngularJS

• The MVC (Model-View-Controller) architecture streamlines web application development by separating data, presentation, and logic.
• AngularJS is a structured JavaScript framework for building dynamic single-page applications, facilitating data binding and dependency management.

Introduction to DHTML and JavaScript

• Focus on client-side dynamic HTML (DHTML) to improve web application interactivity and engagement.
• Enables the implementation of dynamic behaviors in web interfaces.
• Students will learn to write basic inline JavaScript scripts to enhance webpage functionality and appearance.
• Learning outcomes include designing pages with dynamic behaviors and understanding JavaScript functions.

What is DHTML?

• Dynamic HTML combines HTML, CSS, and JavaScript to create interactive web pages.
• Allows functionalities like changing text color on mouse hover and allowing drag-and-drop features.
• Based on standard HTML 4.0 specifications.
• Facilitates user-interactive elements that resemble desktop applications.

Inbuilt Dynamic HTML Elements

• Javascript provides methods like document.write() to output dynamic data (e.g., current date).
• innerHTML property allows easy modification of HTML content (e.g., changing text inside elements).
• Attributes can be changed dynamically via JavaScript, such as the src of an image.

Scripting Languages

• Scripting languages automate task execution within runtime environments, often interpreted rather than compiled.
• Scripts are not visible to users but alter website behavior based on user interactions.

What is JavaScript?

• JavaScript is a versatile scripting language used for creating dynamic and interactive web content.
• Enables functionalities such as multimedia control, content updates, and rendering animations on web pages.

Client-Side Programming

• Client-side scripts run in the user's browser, allowing direct access to source code.
• Useful for novices to learn and understand basic scripting, particularly JavaScript.

Inline JavaScript Syntax

• Inline JavaScript embeds script within HTML pages, either in the head or body sections.
• Event handlers like onclick can trigger JavaScript functions, altering HTML content dynamically.

JavaScript Functions and Procedures

• Functions are declared using the function keyword and can execute specific tasks based on parameters.
• Procedures in programming define a set of steps to achieve a result, such as adding two numbers.

Variables, Data Types, and Calculations

• JavaScript supports multiple data types: numbers, strings, objects, and booleans.
• Variables can store various types and dynamically change their type throughout the program.
• Strings can contain characters and can be defined with single or double quotes.
• Boolean values represent true or false states, useful in conditional statements.

Conditional Statements

• Conditional statements (if, else, switch) allow different code execution based on conditions.
• if for executing blocks based on true conditions, and else for when conditions are false.
• The switch statement executes different blocks based on varying conditions.

Additional JavaScript Concepts

• Functions can take parameters, enabling customizable behavior based on input values.
• Input popups facilitate user interaction, collecting data for processing within scripts.
• Data type conversions are necessary for manipulating and comparing different data forms effectively.### JavaScript Control Structures
• Conditional statements allow execution of code blocks based on true or false evaluations.
• Example:
  • If hour < 18, set greeting to "Good day"; else, set to "Good evening".

JavaScript Functions and Event Handling

• Functions can be defined to perform actions when triggered by events like button clicks.
• Example function myFunction() alerts "Hello".

Timing Control Functions

• setTimeout():

  • Executes a function after a specified delay in milliseconds.
  • Example: myVar = setTimeout(myFunction, 3000); can be stopped using clearTimeout(myVar).

• setInterval():

  • Repeats execution of a function at a defined interval.
  • Used for dynamic content updates, e.g., displaying current time every second using setInterval(myTimer, 1000).

jQuery Library

• jQuery simplifies JavaScript with built-in functionalities.
• Enables manipulation of HTML, CSS, and supports AJAX operations.
• Advantages include reducing code length and enhancing code reusability.

jQuery Syntax and Selectors

• Basic jQuery syntax: $(selector).action().
• Selectors:
  • $("*") selects all elements.
  • $("p.intro") selects paragraph elements with class 'intro'.

jQuery Functions and Event Handling

• Easy event handling and manipulations done using ready function for DOM operations.
• Example: To hide paragraphs upon clicking a button: $("button").click(function(){ $("p").hide(); });.

jQuery For Form Validation

• jQuery is widely used for input validation in forms to enhance user experience.
• Example validation code enforces required fields with specific error messages.

Web Hosting Basics

• Web hosting refers to providing technologies to store and view websites online.
• Hosting types include UNIX and Windows platforms, each supporting different scripting and database technologies.

Windows Hosting

• Utilizes Microsoft technologies like ASP, ASP.NET, and MSSQL for server-side scripting.
• ASP enables dynamic web page creation with embedded scripting.

UNIX and Linux Hosting

• UNIX is the original web server OS known for stability and reliability.
• Linux is based on Unix and offers affordability and a wide feature set for hosting services.

Web Servers and Utilities

• Web servers respond to browser requests by delivering web content.
• Examples: Apache HTTP Server (open-source) and Microsoft IIS (for Windows-based hosting).
• Purpose: Store and manage access to web content; also used in various specialized servers (gaming, storage, etc.).### Web Server Response Types
• Web servers respond by sending files associated with requested URLs or generating responses via scripts that communicate with databases.
• When a web page is requested, the server searches for it and sends an HTTP response; if not found, an "Error 404 Not Found" is sent.
• For other resources, the web server connects with the application server and database to create the HTTP response.

Internet Service Provider (ISP)

• An ISP is a company providing internet access and connects customers via technologies like dial-up, DSL, cable modem, or wireless.
• ISPs may offer email accounts allowing communication through their servers.

Apache HTTP Server

• Apache is a widely used, open-source web server compatible with both Windows and Unix systems.
• Installation packages for Apache can include additional components like PHP and Python.
• Most Linux distributions come with Apache included; installation demos are available for platforms like Ubuntu.

Internet Information Services (IIS)

• IIS is a web server for Windows, enabling users to publish web pages and applications on local computers.
• It is not pre-installed on Windows operating systems by default; installation demos are provided.

Publishing in IIS

• Create a homepage file named "Default.htm" or "Default.asp" and copy it to the default publishing directory, typically found at \Inetpub\wwwroot.
• Visitors can access the site using either the computer name or numerical IP if a name resolution system is unavailable.
• For FTP publishing, files are copied to \Inetpub\Ftproot with similar access protocols.

Domain Name Registration

• A domain name, like "microsoft.com," is unique to a website and necessary for user accessibility through browsers and search engines.
• Domain names must be registered to be part of a large register, linking them to a specific internet IP address via DNS.

Web Hosting Options

• Shared Servers host multiple sites on one computer, offering lower costs but shared resources that can affect performance.
• Dedicated Servers provide exclusive access to resources, ideal for high-traffic websites, but at higher costs.
• Virtual Private Servers (VPS) offer a middle ground, segmenting a server into virtual servers, allowing dedicated resources without the full cost of dedicated hosting.

Web Server Ports and Configurations

• Web servers utilize numbered ports, typically port 80 for HTTP services.
• Configuration demos of Apache and IIS ports are available for instructional purposes.

Remote Login Protocols

• Remote login allows users to access host machines; common protocols include TELNET and SSH.
• TELNET establishes a connection to remote machines over TCP but lacks security.
• SSH (Secure Shell) offers encrypted communication and more flexible command execution, ensuring secure connections.

GUI Web Server Control and cPanel

• Control panels like cPanel assist in managing web hosting environments, providing operations like DNS management, email management, and database administration.
• cPanel is a popular web-based control panel with extensive functionalities, including account management, hosting plans, and security configurations.

File Permissions in Unix/Linux

• File permissions dictate access levels, categorized as Read (r), Write (w), and Execute (x).
• Permissions are assigned to user groups: Owner (User), Group (related files), and World (everyone else).

Website Maintenance Importance

• Regular website maintenance is essential to retain customer engagement, update content, and enhance search engine rankings.
• A well-maintained website reflects business value and operational integrity, requiring consistent updates and management.

Document Object Model (DOM)

• The DOM is an API for HTML/XML documents, enabling browsers to create a structured model of web pages.
• JavaScript interacts with the DOM to manipulate HTML elements and respond to events, creating dynamic webpages.

MVC Architecture and AngularJS

• The MVC (Model-View-Controller) architecture streamlines web application development by separating data, presentation, and logic.
• AngularJS is a structured JavaScript framework for building dynamic single-page applications, facilitating data binding and dependency management.

This quiz covers the fundamentals of Dynamic HTML and its applications alongside an introduction to JavaScript programming. Learners will explore the integration of CSS and DHTML to enhance web interfaces and create basic scripts. By the end, students will understand how to implement dynamic behaviors and improve web appearance.