HTML Common Identification

These tags are used to define the body title, from large to small. Each body title is a paragraph.

(3) Paragraph division

Used in HTML

and

The difference is that:
The branch of

The segment of is empty and then restarted.

(5) Character entity

Some characters have special meanings in HTM L. For example, the less than sign "<" indicates the beginning of an HTML tag. The less than sign is not displayed in the final page. If you want to display a less than sign in the web page, you need to use HTML Character Entities. For example, in general, HTM L will automatically truncate extra spaces. No matter how many spaces are added, they are regarded as one space. If you add 10 spaces between two words, HTML will truncate 9 spaces, leaving only one. In order to add a space in a web page, you can use to indicate a space.

A character entity is divided into three parts: the first part is an ampersand; The second part is the entity name or # plus the entity number; The third part is a semicolon. For example, to display the less than sign, you can write&It; Or<. The advantage of using entity names is easy to understand, but its disadvantage is that not all browsers support the latest entity names. The entity number can be processed by all kinds of browsers.

Note: Entity is case sensitive.


4. Multimedia

HTML files can contain pictures, audio, video and other multimedia information formats, which greatly facilitates the spread of network information.

(1) Picture

use Identifier can be inserted into HTML with pictures.

Url indicates the path and file name of the image.

There is an alt attribute (alternate text) in.

If the browser does not have the function of carrying people, it will display the value of alt attribute instead. In fact, most browsers now support picture carrying. The alt attribute is introduced here because of its other important function. At present, search engine crawling tools cannot recognize the text contained in the image, so the alt attribute is used to write a description of the image to facilitate the search engine to crawl the content of the web page.

By default, the image displays the original size, but you can use the height and width attributes to change the size of the image

(2) Audio

① Web embedded audio

Property is set to Autostart=false - the sound will not play automatically when the web page is opened.

② Add sound link

Music file name

③ Add web background music

The attribute is set to LOOP=N (number of plays)/- 1 to open the web page, and the sound will play in cycles. N is the number of cycles, and - 1 is infinite.

(3) Video

① Web page embedded video

Common attributes include: WIDTH, HEIGHT, AUTOSTART, LOOP.

② Add video link

Video file name

5. Hyperlink Stop

(1) A and href attributes

For HTML To represent the hyperlink (anchor) It can point to any file source: an HTML page, an image, a movie file, etc. The usage is as follows:

Linked display text

Click the content to open a linked file. The h ref attribute indicates the path of the linked file. For example, if you link to the homepage of Luoyang Institute of Technology's website, you can say:

Shangpin China

(2) Name attribute

Using the name attribute, you can jump to the specified part of a file. Use the name attribute to set a pair. One is to set the name of the name, and the other is to set an href to point to the name:

See Chapter 1
Chapter I

The name attribute is usually used to create a table of contents for a large file. A link is created for each chapter and placed at the beginning of the file. The name attribute is set at the beginning of each chapter. When the user clicks the link of a chapter, the content of the chapter will be displayed on the top.

(3) Link to E-mail address

On the website, you will often see links such as "Contact Us". Once you click this link, you will trigger the e-mail client of the browser, such as Outlook Express, and then a new e-mail window will be displayed. use Such functions can be realized, such as:

Contact Shangpin

Due to the limited space in this book, only basic knowledge in HTML can be briefly explained here. If learners are interested in further learning, they can refer to relevant books.
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