A little thought on Web standards: very simple semantics

With the popularization of web standards in China, the concepts of structural performance separation, modularity, semantics and elegance degradation have also become an important part of the understanding of Web standards by a front-end staff, among which, because of the impact of the commercial value behind the SEO, "semantic" has been highlighted, As an entry-level front-end worker, I have simply argued that "semantic" is the way to use the tag organization (x) HTML structure, which is the most powerful search engine weighting.

After reading a lot of front-end books and many predecessors of the article, I began to realize the shallow consciousness of their own, slowly understand the "semantic" value. The following is a summary of the individual's daily practice, bringing together several predecessors ' viewpoints, standing on the shoulders of giants to see further.

What is "semantic" (semantic)

Semantics refers to the ability of machines to study and gather information in situations where fewer human interventions are needed, so that Web pages can be understood by machines and ultimately benefit humans. Specifically, the use of the BI Forum netizens popular interpretation, "semantic meaning is not to treat your girlfriend as a general friend", the following is a superficial form of XML examples:

However, with CSS control, it is easy to show "girlfriend" as "friend", only pay attention to the performance layer, the label depending on just a "hook", provided to the CSS and JS to do processing, then why we should also emphasize "semantic", the following will be discussed in detail.

The meaning of semantics

1. Search engine

For search engine optimization, many predecessors have done a rich explanation, about the weight of HX, hidden text, and so on, this will no longer swim the eggs, a period of time, a name for Wolfram (http://www.wolframalpha.com/) of the search engine has attracted attention, We know that Google will be based on the PR value of each site to sort the search results, other search engines also have their own independent algorithm, while Wolfram claims to "understand" the user input content under the premise to make judgments, when the input "Who is Adrian", Wolfram gave me such feedback, although the results were not very accurate.

To connect to the front end of the work, we are advocating the "semantic" is not to let the computer read our content? A simple example like this <acronym title= "World Wildlife Fund" >WWF</ACRONYM>, the computer can understand the WWF is worth the World Wildlife Fund, not the world Water Forum, let the computer fully understand our content is not realistic, even if the search engine such as Wolfram is just a flash in the pan, but its pursuit of the vision, making the world "s knowledge computable is worthy of our pursuit.