What you don't know about HTML5 and the things in HTML (i)

Category: Web development

About:       about HTML5 I believe we have known each other long ago, but what role does his real meaning have in concrete development? With respect to HTML, what new definition and new ideas does he have in it? Why do some experts think that when HTML5 is completely complete, all the work can be achieved in a true cloud way? Do you have any idea about this series of questions?       This series of articles will answer all the things you don't know about HTML5 and HTML, including: HTML5 new ideas and ideas, the purpose of HTML5 new tags and the application of specific development scenarios, HTML5 and CSS3 's emotional experience (collocation), including some small privacy of HTML5 's father HTML (something you might not know about in development);  back to today's topic what you may not know about today is: 1) What do you not notice in the basic structure of HTML pages? 2) What is the difference between "semantic" and "semantics" in HTML5? 3) What is the name of the Web file that you think will affect your site's experience?   First question:     html What you don't notice in the basic structure of the page are those?      below we look at a standard HTML page code this is a basic HTML page, You may feel familiar with the feeling can not be familiar with, and what I do not know? If I say the next few points you know it proves that you really studied HTML and browser;  1th:     <! DOCTYPE html> The use of this tag, perhaps you find an HTML page you do not write this tag is also correct, why add him? What is the use of it? In fact, its purpose is       1, tell the browser this file is HTML file;      2, tell the browser version of HTML,    This label is written on the standard I wrote, Of course you can not make mistakes in the lowercase browser, but the standard is capitalization can be said that the entire HTML tag on this DOCTYPE tag standard is uppercase the rest of the standard is lowercase, of course, you can also do not follow the standard HTML rules are relatively loose, the smaller part thinks the more relaxed rules developers should be the more standard PS:HTML5 must have this tag oh, the specific reason in the following article will explain the improved html5doctype;  2nd:   

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What you don't know about HTML5 and the things in HTML (i)