HTML Basic Share

today I'm going to share some of the things I've put together. notes for the basic HTML section.

first of today first part: Marquee Marking

<marquee></marquee>

Common Properties:

L Direction: Scroll Direction value left ( default is scroll right up, down

L Behavior: Scrolling Way value:Scroll ( scrolling default ) slide ( swipe to scroll only once ) Alternate ( play ping-pong like )

L Width: Set width

L Height: Set height

L BgColor: Set Background color

L scrollamount: The step value of scrolling moves the higher the value the faster the faster

Second, the computer into the system

There are several types of binaries in the computer:

decimal: 0, 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9    radix: 10

binary: 0, 1                             radix: 2

Octal :0,1,2,3,4,5 ,6,7 Radix:8

16 binary:0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,FBase: -

What is in the life of the system:

Decimal

hours

Seven days one weeks

one hours in minutes .

365 days means one year

a year in the month

two equals 1 Jin

How to convert the other binary to decimal :

Press Right to expand

(123456.11) 10 = 1*105+2*104+3*103+4*102+5*101+6*100+1*10-1+1*10-2

(1001.11) 2 = 1*23+0*22+0*21+1*20+1*2-1+1*2-2 9.75

(67) 8 = 6*81+7*80 = 55

(FF) 16 = 15*161+15*160 = 255

How decimal is converted to binary

Integral part and fractional part

integer part: Except 2 take -up method

Number of decimal parts

take the 2 rounding method

Computer it only recognizes Binary

Third, the computer code

because the computer can only recognize the binary

at the beginning of the invention of the computer, it was no way to recognize human language.

Letters A in Xiao Ming classmate 's computer above is to use 1001 to express

Letters B on the computer of Xiao Qiang is using 1001 to express

because the computer was invented by the Americans.  The United States has a standardization bureau it has set a set of character encoding standards to enable communication between computers and computers. ASCII Encoding

ASCII encoding

it uses a byte to store the characters Each character is stored using a single byte

The total number of characters a byte can store:

one byte equals 8 bits It can store a total of four characters

ASCII encoding It can be used in English-speaking countries

every country wants to use computers for communication. but ASCII encoding is not available for non-English-speaking countries so extended ANSI encoding for ASCII encoding

ANSI encoding

it uses 2 bytes to store the characters

a Chinese character it actually occupies a two-byte position.

2 bytes can be stored together 256*256 = 65536 characters

GB2312 encoding

It was developed by the China Standardization Bureau in 1980, where it stored 6000 multiple Chinese characters .

Zhu

It also uses 2 bytes to store

GBK encoding

It also uses 2 bytes to store

It stores more than 2W Chinese characters in total

Unicode

It wants every country and country to have normal communication.

it uses four-byte bytes to store characters

now it 's a total of more than a million characters

UTF-8

We can interpret this character encoding as a bot

It uses a few bytes to store characters based on the character's condition .

A uses a single byte to store

I use two bytes to store

the greatest amount of space is reduced

Iv.head Mark

title tag

The purpose of this tag is to display the title of the page.

meta tags

Its main role:

n It tells the browser what encoding to use to parse the current document

n it can implement Web page refresh

n it can implement Web page jump

It can also achieve SEO Optimization

tell the browser what encoding to use to parse the current document

<meta http-equiv= "Content-type" content= "text/html;charset= character encoding " >

XHTML

Extensible Hypertext Markup Language

the HTML syntax is slightly stricter!!

L single- sided mark to end

L label name must be lowercase

The L property must have a property value

L must have a DTD definition in front of the document

Super Link

<a href= " Destination address URL to link " target= "_self|_blank" > text or picture </a>

relative path

Peer Relationship the current file is in the same folder as the destination file

Parent Relationship The target file is at the top level of the current file

Subordinate Relationship The target file is at the next level of the current file

Parent Relationship : .. / Indicates the previous level

.. /.. / indicates upper level two

Anchor Point Link

To implement an anchor link requires two steps:

First step: To define an anchor point

<a name= " anchor name " ></a> or <a id=" anchor name " ></a>

Second step: To find the defined anchor link

<a href= "# Anchor name " > text or picture </a>

Picture Markers

SRC: URL address of picture

Alt: The text message displayed when the picture does not exist is advantageous to seo optimization

Title: The text message displayed when the mouse is placed above the slice

Width: Set the picture's widths

Vspace: Set the distance between the top and bottom of the picture

Hspace: Set the left and right distance of the picture

HTML Basic Share