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1 introduction to html

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  • 1. Web Technologies (1) html (2) Xml (3) Java Script http://improvejava.blogspot.in
  • 2. http://improvejava.blogspot.in
  • 3. What is html?  Html stands for Hypertext Mark up language  It is most widely used language to write web pages  Hypertext refers to the way in which web pages are linked     together, when you click a link in a web page, you are using hypertext Markup language describes how html works. With a markup language, you simply “mark up” a text document with tags that tell a web browser how to structure it to display. Html is used to create or design web pages A html document is nothing but a web page To execute a html document we require a browser http://improvejava.blogspot.in
  • 4. What is browser?  A browser is a program that can interpret(translates) the html document  We can use any browser to execute the html document  Example:  Internet Explorer, Google Chrome, Mozilla fire Fox, Opera etc., http://improvejava.blogspot.in
  • 5. How to execute HTML Document?  To execute html document we need to specify the URL(Uniform Resource Locator) in the address bar of the Browser.  url (uniform Resource Locator) is the primary naming scheme using which we identify a web resource.  A web resource can be html document (or) any other resource http://improvejava.blogspot.in
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  • 10.  Internet is the biggest network that follows client server architecture.  A client is a machine that sends a request to the server  A server is a machine that responds to the client request by sending same resource or information.  A client machine always sends a request or receives a response, to do this client requires a browser also called as client-side software http://improvejava.blogspot.in
  • 11. Html tags  Html tags are used to mark up html elements  The html tag is a command the web browser interprets(translates)  The html tags are surrounded by less than and greater than characters. These characters are called as angular brackets(<,>)  The html tags always come in pairs that is a starting tag and closing tags i.e <html>…..</html>  The text in between the starting tag and ending tag is called as element content. Example: <html> Hello </html>  All the html tags are predefined tags  The html tags are not case sensitive that is the uppercase letters and lower case letters are same.  The entire html document must be written in between html starting tag (<html>) and html closing tag </html>  The <html> tag in a document represents that the document is a html document http://improvejava.blogspot.in
  • 12. What does html document contain?  Html document can contain text and/or html tags http://improvejava.blogspot.in
  • 13. Html document sections  The entire html document is divided into two parts:  (1) head section  (2) body section http://improvejava.blogspot.in
  • 14. Html document sections: (1) head section  Head section is for description the html document. Providing general information about the html document.  Example: title, meta http://improvejava.blogspot.in
  • 15. Html document sections: (2) Body Section  By using Body section we can display text, images in the browser. Note: The head section will not considered as part of the data in the browser. http://improvejava.blogspot.in
  • 16. Html document structure(syntax) <html> <head> </head> <body> </body> </html> http://improvejava.blogspot.in
  • 17. HTML editor like:  Writing HTML Using Notepad or Text Edit  HTML can be edited by using a professional HTML editor like: 1. Adobe Dreamweaver 2. Microsoft Expression Web 3. Coffee Cup HTML Editor  However, for learning HTML we recommend a text editor like Notepad (PC) or Text Edit (Mac). We believe using a simple text editor is a good way to learn HTML.  Follow the 4 steps below to create your first web page with Notepad. http://improvejava.blogspot.in
  • 18. Step 1: Start Notepad  To start Notepad go to:  Start All Programs Accessories Notepad http://improvejava.blogspot.in
  • 19. A procedure to write and execute the html document <html> <head> <title> First html </title> </head> <body> Welcome to html </body> </html> http://improvejava.blogspot.in
  • 20. Step 2: Edit Your HTML with Notepad  Type your HTML code into your Notepad: <!DOCTYPE html> <html> <body> <h1>My First Heading</h1> <p>My first paragraph.</p> </body> </html> http://improvejava.blogspot.in
  • 21. Step 3: Save Your HTML  Select Save as.. in Notepad's file menu.  When you save an HTML file, you can use either the .htm or the .html file extension. There is no difference, it is entirely up to you.  Save the file in a folder that is easy to remember http://improvejava.blogspot.in
  • 22. Step 4: Run the HTML in Your Browser  Start your web browser and open your html file from the File, Open menu, or just browse the folder and double-click your HTML file. http://improvejava.blogspot.in
  • 23. Comments in html (1) single line comments (2) Multiline comments    Html comments are used to provide information (or) used to explain the code. The comments are Non-executable statements which are ignored by the browser. The html comments must begin with <!--.. And end with --> http://improvejava.blogspot.in
  • 24. (1) Single line comments  <!—comments--> http://improvejava.blogspot.in
  • 25. (2) Multiline comments <! This is my First html program --> http://improvejava.blogspot.in
  • 26. Error free language  Html language is an error free language that is when the browser encounters an error in the html document it will not display any error message http://improvejava.blogspot.in
  • 27. Note:  Every html tag given the information to the browser  Browser contains interpreter that executes the html document  Each tag which gives the information to the browser  If you want to provide additional information we should use attributes  Attributes should be declared in starting tag  Ex: <body bgcolor=“blue”> </body> http://improvejava.blogspot.in