文档章节

Resource Data

l
 luckypeter
发布于 2016/02/02 15:40
字数 423
阅读 6
收藏 0

markup language is a system for annotating a document in a way that is syntactically distinguishable from the text.[1] The idea and terminology evolved from the "marking up" of paper manuscripts, i.e., the revision instructions by editors, traditionally written with a blue pencil on authors' manuscripts.

In digital media this "blue pencil instruction text" was replaced by tags, that is, instructions are expressed directly by tags or "instruction text encapsulated by tags." Examples include typesetting instructions such as those found introffTeX and LaTeX, or structural markers such as XML tags. Markup instructs the software that displays the text to carry out appropriate actions, but is omitted from the version of the text that users see.

Some markup languages, such as the widely used HTML, have pre-defined presentation semantics—meaning that their specification prescribes how to present the structured data. Others, such as XML, do not.

HyperText Markup Language (HTML), one of the document formats of the World Wide Web, is an instance ofSGML (though, strictly, it does not comply with all the rules of SGML), and follows many of the markup conventions used in the publishing industry in the communication of printed work between authors, editors, and printers.

Getting started with schema.org using Microdata

Most webmasters are familiar with HTML tags on their pages. Usually, HTML tags tell the browser how to display the information included in the tag. For example, <h1>Avatar</h1> tells the browser to display the text string "Avatar" in a heading 1 format. However, the HTML tag doesn't give any information about what that text string means—"Avatar" could refer to the hugely successful 3D movie, or it could refer to a type of profile picture—and this can make it more difficult for search engines to intelligently display relevant content to a user.

Schema.org provides a collection of shared vocabularies webmasters can use to mark up their pages in ways that can be understood by the major search engines: Google, Microsoft, Yandex and Yahoo!

You use the schema.org vocabulary along with the Microdata, RDFa, or     JSON-LD formats to add information to your Web content. This guide will help get you up to speed with Microdata and schema.org so that you can start adding markup to your web pages.

Although this guide focusses on Microdata, most examples on the schema.org site show examples in RDFa and JSON-LD too. The basic ideas (types, properties etc.) introduced here are relevant beyond Microdata - take a look at the examples to see how the details compare.


© 著作权归作者所有

l
粉丝 0
博文 1
码字总数 423
作品 0
大连
高级程序员
私信 提问
Terraform 0.7 发布,基础架构管理工具

Terraform 0.7 发布了。Terraform 是一个安全和高效的用来构建、更改和合并基础架构的工具。采用 Go 语言开发。Terraform 可管理已有的流行的服务,并提供自定义解决方案。 Terraform0.7增加...

oschina
2016/08/03
2.4K
6
对文本进行pos-tag

我想对文本进行pos-tag import nltk; file_object = open('E:\\practise\\Web1T5-Easy-1.1\\3grams\\3gm-0000.txt') try: for eachline in file_object: print eachline,; text = nltk.word_......

taolin2014
2014/05/28
1K
1
SCIM: System for Cross-domain Identity Management

官网:http://www.simplecloud.info/ Overview The System for Cross-domain Identity Management (SCIM) specification is designed to make managing user identities in cloud-based appl......

Sam_Li
2014/04/02
0
0
AndroidManifest.xml文件详解(meta-data)

语法(SYNTAX): 被包含于(CONTAINED IN): 说明(DESCRIPTION): 这个元素用name-value对的格式给其父组件提供任意可选的数据。一个组件元素能够包含任意多个子元素,所有这些元素中定义...

长平狐
2012/10/16
2.3K
0
Django REST framework的各种技巧——7.导入导出

其实这个东西跟restframework没有卵关系,顺便写在这里 Django REST framework的各种技巧【目录索引】 导入导出在cms中是一个非常常用的功能,思考做成通用的东西,最终选择django-import-e...

duoduo3_69
2016/02/01
84
0

没有更多内容

加载失败,请刷新页面

加载更多

FPGA 设备 USB Platform Cable USB

lsusbFuture Technology Devices International, Ltd FT232H Single HS USB-UART/FIFO IC

MtrS
今天
4
0
lua web快速开发指南(6) - Cache、DB介绍

"数据库"与"缓存"的基本概念 数据库与缓存是服务端开发人员的必学知识点. 数据库 "数据库"是一种信息记录、存取的虚拟标记地点的集合统称. 比如现实生活中, 我们经常会用到文件柜、书桌等等数...

水果糖的小铺子
今天
5
0
Oracle分页查询语句的写法

Oracle分页查询语句的写法 Oracle分页查询语句使我们最常用的语句之一,下面就为您介绍的Oracle分页查询语句的用法,Oracle分页查询语句基本上可以按本文给出的格式来进行套用。   Oracle分...

康师傅
昨天
5
0
java并发图谱

1527
昨天
2
0
Mybatis之拦截器Interceptor

使用mybatis时用PageHelper进行分页,用到了PageInterceptor,借此了解下mybatis的interceptor。Mybatis的版本是3.4.6,MybatisHelper的版本是5.1.3。 1、PageInterceptor 先上一段代码,如下...

克虏伯
昨天
2
0

没有更多内容

加载失败,请刷新页面

加载更多

返回顶部
顶部