版本符号html,HTML符号

HTML Symbols

Symbols that are not present on your keyboard can also be added

by using entities.

HTML Symbol Entities

HTML entities were described in the previous chapter.

Many mathematical, technical, and currency symbols, are not present on a normal keyboard.

To add such symbols to an HTML page, you can use the entity name or the entity number

(a decimal or a hexadecimal reference) for the symbol.

Example

Display the euro sign, €, with an entity name, a decimal, and a hexadecimal

value:

I will display €

I will display €

I will display €

Will display as:

I will display €

I will display €

I will display €

来试试吧 »

Some Mathematical Symbols Supported by HTML

Char

Number

Entity

Description

∀

∀

∀

FOR ALL

∂

∂

∂

PARTIAL DIFFERENTIAL

∃

∃

∃

THERE EXISTS

∅

∅

∅

EMPTY SETS

∇

∇

∇

NABLA

∈

∈

∈

ELEMENT OF

∉

∉

∉

NOT AN ELEMENT OF

∋

∋

∋

CONTAINS AS MEMBER

∏

∏

∏

N-ARY PRODUCT

∑

∑

∑

N-ARY SUMMATION

Some Greek Letters Supported by HTML

Char

Number

Entity

Description

Α

Α

Α

GREEK CAPITAL LETTER ALPHA

Β

Β

Β

GREEK CAPITAL LETTER BETA

Γ

Γ

Γ

GREEK CAPITAL LETTER GAMMA

Δ

Δ

Δ

GREEK CAPITAL LETTER DELTA

Ε

Ε

Ε

GREEK CAPITAL LETTER EPSILON

Ζ

Ζ

Ζ

GREEK CAPITAL LETTER ZETA

Some Other Entities Supported by HTML

Char

Number

Entity

Description

©

©

©

COPYRIGHT SIGN

®

®

®

REGISTERED SIGN

€

€

€

EURO SIGN

™

™

™

TRADEMARK

←

←

←

LEFTWARDS ARROW

↑

↑

↑

UPWARDS ARROW

→

→

→

RIGHTWARDS ARROW

↓

↓

↓

DOWNWARDS ARROW

♠

♠

♠

BLACK SPADE SUIT

♣

♣

♣

BLACK CLUB SUIT

♥

♥

♥

BLACK HEART SUIT

♦

♦

♦

BLACK DIAMOND SUIT