HTML front end of the road Interview interview Zhenti

What is the significance 1.doctype

• Let the browser rendering in standard mode
• Let the browser know the elements of legitimacy

The relationship 2.HTML XHTML HTML5

• HTML belong to SGML
• XHTML belongs to XML, HTML for XML is the result of strict
• HTML5 does not belong to SGML or XML, XHTML than loose

3.HTML5 what changes

• New semantic elements
• Forms enhancements
• The new API (off-line, audio and video, graphics, real-time communication, local storage, device capabilities)
• Classification and nested change

What is the difference and i 4.em

• em is the semantic tags, for emphasis
• i is the pure form of labels, the table italics
• HTML5 is not i do not recommend the general use as the icon

5. What is the meaning of semantic

• Developers easy to understand
• The machine is easy to understand structure (search, screen reader software)
• SEO helps
• semantic microdata

6. Which elements may be self-closing

• Form elements input
• Pictures img
• br hr
• meta link

7.HTML and DOM relationship

• HTML is 'die'
• DOM parsing evolved from HTML, is alive
• JS can maintain DOM

And attribute the difference 8.property

• attribute is 'die'
• property is 'live' of

What is the role of 9.form

• Directly submit the form
• Use submit / reset button
• Easy browser save form
• Overall third-party libraries can extract value
• Third-party libraries can form validation

May you finally become learners