XHTML is an evolution of HTML that complies with XML syntax rules, making it stricter and cleaner than HTML. It delivers web content to browsers while CSS provides visual design and XML provides data. To learn XHTML, first learn HTML and then apply XHTML rules like properly nesting tags, closing all tags, using lowercase tags and attribute quotes, and including mandatory header elements. Web development typically involves editing HTML locally, saving and refreshing in a browser, then uploading finished work to a staging or production server.

1. Web Development with XHTML

2. Who has used HTML? Who has used XHTML? What’s the difference?

3. XHTML is… e X tensible H yper T ext M arkup L anguage a W3C Recommendation evolved from HTML (4.01) to comply with XML syntax rules stricter and cleaner than HTML 4 evolving into HTML 5

4. CSS provides visual design XML provides data XHTML delivers content to browser

5. Learning XHTML First learn HTML Then apply XHTML rules: tags must be properly nested tags must always be closed <br /> tags must be lowercase <ul> not <UL> tag attributes must be in quotes mandatory header elements must be included

6. Development Process Edit HTML in text editor Save as .html or .htm file Open file from Web browser Further edit HTML in text editor Save Refresh page in Web browser

7. Development Process Development typically takes place on local PC Finished Web site is uploaded to server (staging or production) Changes to Web site are made on local machine and uploaded when completed Two copies of the Web site are maintained, one local and one on server.

8. Development Process Web development tools are often used to simplify the development process.