Web topic 32 validate web contents

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  • 1. Web Authoring Topic 32
  • 2. ObjectivesStudents should able to:1. Explain the need for validating web contents.2. Elaborate the importance of validating web contents.
  • 3. Page ValidationWhy do page validation?Validation as a debugging toolVery often, different software on differentplatforms will not handle errors in a similarfashion, making it extremely difficult toapply style or layout consistently.
  • 4. Page ValidationWhy do page validation?Validation as a debugging toolUsing standard, interoperable markup andstylesheets, offers a much greater chanceof having ones page handled consistentlyacross platforms. Most developers creatingrich Web applications will make sure thattheir markup and CSS is validated beforecreating a rich interactive layer.
  • 5. Page ValidationWhy do page validation?Validation eases maintenanceCreating Web pages or applicationsaccording to a widely accepted coding stylemakes them easier to maintain, even if themaintenance and evolution is performedby someone else.
  • 6. Page ValidationWhy do page validation?Validation as a future-proof quality checkChecking that a page “displays fine” inseveral contemporary browsers may be areasonable insurance that the page will“work” today, but it does not guaranteethat it will work tomorrow.
  • 7. Page ValidationWhy do page validation?Validation as a future-proof quality checkValidation in accordance with Webstandards provides one of the most reliableguarantee that future Web platforms willhandle it as designed.
  • 8. Page ValidationWhy do page validation?Validation helps teach good practicesBeginners and students will findautomated checking tools invaluable inspotting mistakes. Automated validationtests are a good introduction to broader,more complex quality concepts such asaccessibility.
  • 9. Page ValidationWhy do page validation?Device compatibility- Websites thatseparate the structure from the style aremore easily repurposed for mobile devicesand other browsers. CSS also allows foralternative style sheets that optimize theappearance based on the device beingused to view the page.
  • 10. Page ValidationWhy do page validation?Validation is a sign of professionalismAs of today, there is little or no certificationfor Web professionals, leaving most Web-smiths to learn by themselves, with variedsuccess.Validation can then be used as a quickcheck to determine whether the code isthe clean work of a seasoned HTML author.