HTML5 programming

HTM5 defines a new semantic markup to describe the content of elements, which can simplify HTML page design. HTML5 introduces a new set of fragment elements. The following table lists the new semantic markup elements

##HTML5’s advantages and disadvantages:

Advantages: Simple, limited number of tags, weak syntax

The so-called weak syntax means that the tags are not case-sensitive, The attribute value does not add "" or ' ', You can omit some tags, Such as: Html/body/head/tbody Wait

Disadvantages: Poor structure, inability to create tags, vicious competition

Poor structure: Refers to It is far from enough to describe the data structure

Cannot create tags: That means you cannot create custom tags

Vicious competition: Refers to multiple browsers In order to increase their own functions and competitiveness, manufacturers develop their own HTML5 tags without authorization, and other manufacturers do not recognize them at all. This leads to the lack of unified standards among HTML tags, causing confusion.