哪些字符可用于在 HTML 中显示的上/下三角形（没有茎的箭头）？

Unicode 箭头：

▲ - U+25B2 黑色上三角

▼ - U+25BC 黑色下三角

▴ - U+25B4 小黑三角

▾ - U+25BE 小黑下三角

如果您不能直接包含 Unicode 字符（使用 UTF-8！），则 ▲ 和 ▼ 分别使用 ▲ 和 ▼。

请注意，较小版本的字体支持不太好。最好使用较小字体的大版本。

更多 Unicode 箭头位于：

http://en.wikipedia.org/wiki/Arrow_%28symbol%29#Arrows_in_Unicode

http://en.wikipedia.org/wiki/Geometric_Shapes

最后，这些箭头不是 ASCII，包括 ↑ 和 ↓：它们是 Unicode。

对于 HTML 实体
◄ = ◄
► = ►
▼ = ▼
▲ = ▲

选项 1：UNICODE 列排序箭头

（看起来很高档）

⇕ = ⇕

https://i.stack.imgur.com/PR1CS.jpg

重要提示（使用 Unicode 符号时）Unicode 支持因选择的符号、浏览器和字体系列而异。如果您发现您选择的符号在某些浏览器中不起作用，请尝试使用不同的字体系列。 Microsoft 推荐使用“Segoe UI Symbol”，但最好将字体包含在您的网站中，因为没有多少人在他们的计算机上使用它。

在其他浏览器中打开此页面以查看哪些符号以默认字体呈现。

更多的 unicode 箭头。

要使用它们：

将它们从页面上复制下来。使用每行上方的代码，在与其在该行中的位置相关的结束分号之前插入相应的十六进制数字。

最后一位

 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F

ș

← ↑ → ↓ ↔ ↕ ↖ ↗ ↘ ↙ ↚ ↛ ↜ ↝ ↞ ↟

Ț

↠ ↡ ↢ ↣ ↤ ↥ ↦ ↧ ↨ ↩ ↪ ↫ ↬ ↭ ↮ ↯

ț

↰ ↱ ↲ ↳ ↴ ↵ ↶ ↷ ↸ ↹ ↺ ↻ ↼ ↽ ↾ ↿

Ȝ

⇀ ⇁ ⇂ ⇃ ⇄ ⇅ ⇆ ⇇ ⇈ ⇉ ⇊ ⇋ ⇌ ⇍ ⇎ ⇏

ȝ

⇐ ⇑ ⇒ ⇓ ⇔ ⇕ ⇖ ⇗ ⇘ ⇙ ⇚ ⇛ ⇜ ⇝ ⇞ ⇟

Ȟ

⇠ ⇡ ⇢ ⇣ ⇤ ⇥ ⇦ ⇧ ⇨ ⇩ ⇪ ⇫ ⇬ ⇭ ⇮ ⇯

ȟ

⇰ ⇱ ⇲ ⇳ ⇴ ⇵ ⇶ ⇷ ⇸ ⇹ ⇺ ⇻ ⇼ ⇽ ⇾ ⇿

额外的 HTML unicode 符号

其他有用的 Unicode 图标/符号的选定列表。

U+2302  ⌂   HOUSE
U+2303  ⌃   UP ARROWHEAD
U+2304  ⌄   DOWN ARROWHEAD
U+2305  ⌅   PROJECTIVE
U+2306  ⌆   PERSPECTIVE
U+2307  ⌇   WAVY LINE
U+2315  ⌕   TELEPHONE RECORDER
U+2316  ⌖   POSITION INDICATOR
U+2317  ⌗   VIEWDATA SQUARE
U+2318  ⌘   PLACE OF INTEREST SIGN
U+231A  ⌚   WATCH
U+231B  ⌛   HOURGLASS
U+2326  ⌦   ERASE TO THE RIGHT
U+2327  ⌧   X IN A RECTANGLE BOX
U+2328  ⌨   KEYBOARD
U+2329  〈   LEFT-POINTING ANGLE BRACKET
U+232A  〉   RIGHT-POINTING ANGLE BRACKET
U+232B  ⌫   ERASE TO THE LEFT
U+23E9  ⏩   BLACK RIGHT-POINTING DOUBLE TRIANGLE
U+23EA  ⏪   BLACK LEFT-POINTING DOUBLE TRIANGLE
U+23EB  ⏫   BLACK UP-POINTING DOUBLE TRIANGLE
U+23EC  ⏬   BLACK DOWN-POINTING DOUBLE TRIANGLE
U+23ED  ⏭   BLACK RIGHT-POINTING DOUBLE TRIANGLE WITH VERTICAL BAR
U+23EE  ⏮   BLACK LEFT-POINTING DOUBLE TRIANGLE WITH VERTICAL BAR
U+23EF  ⏯   BLACK RIGHT-POINTING TRIANGLE WITH DOUBLE VERTICAL BAR
U+23F0  ⏰   ALARM CLOCK
U+23F1  ⏱   STOPWATCH
U+23F2  ⏲   TIMER CLOCK
U+23F3  ⏳   HOURGLASS WITH FLOWING SAND
U+2600  ☀   BLACK SUN WITH RAYS
U+2601  ☁   CLOUD
U+2602  ☂   UMBRELLA
U+2603  ☃   SNOWMAN
U+2604  ☄   COMET
U+2605  ★   BLACK STAR
U+2606  ☆   WHITE STAR
U+2607  ☇   LIGHTNING
U+2608  ☈   THUNDERSTORM
U+2609  ☉   SUN
U+260A  ☊   ASCENDING NODE
U+260B  ☋   DESCENDING NODE
U+260C  ☌   CONJUNCTION
U+260D  ☍   OPPOSITION
U+260E  ☎   BLACK TELEPHONE
U+260F  ☏   WHITE TELEPHONE
U+2610  ☐   BALLOT BOX
U+2611  ☑   BALLOT BOX WITH CHECK
U+2612  ☒   BALLOT BOX WITH X
U+2613  ☓   SALTIRE
U+2614  ☔   UMBRELLA WITH RAINDROPS
U+2615  ☕   HOT BEVERAGE
U+2616  ☖   WHITE SHOGI PIECE
U+2617  ☗   BLACK SHOGI PIECE
U+2618  ☘   SHAMROCK
U+2619  ☙   REVERSED ROTATED FLORAL HEART BULLET
U+261A  ☚   BLACK LEFT-POINTING INDEX
U+261B  ☛   BLACK RIGHT-POINTING INDEX
U+261C  ☜   WHITE LEFT POINTING INDEX
U+261D  ☝   WHITE UP POINTING INDEX
U+261E  ☞   WHITE RIGHT POINTING INDEX
U+261F  ☟   WHITE DOWN POINTING INDEX
U+2620  ☠   SKULL AND CROSSBONES
U+2621  ☡   CAUTION SIGN
U+2622  ☢   RADIOACTIVE SIGN
U+2623  ☣   BIOHAZARD SIGN
U+262A  ☪   STAR AND CRESCENT
U+262B  ☫   FARSI SYMBOL
U+262C  ☬   ADI SHAKTI
U+262D  ☭   HAMMER AND SICKLE
U+262E  ☮   PEACE SYMBOL
U+262F  ☯   YIN YANG
U+2638  ☸   WHEEL OF DHARMA
U+2639  ☹   WHITE FROWNING FACE
U+263A  ☺   WHITE SMILING FACE
U+263B  ☻   BLACK SMILING FACE
U+263C  ☼   WHITE SUN WITH RAYS
U+263D  ☽   FIRST QUARTER MOON
U+263E  ☾   LAST QUARTER MOON
U+263F  ☿   MERCURY
U+2640  ♀   FEMALE SIGN
U+2641  ♁   EARTH
U+2642  ♂   MALE SIGN
U+2643  ♃   JUPITER
U+2644  ♄   SATURN
U+2645  ♅   URANUS
U+2646  ♆   NEPTUNE
U+2647  ♇   PLUTO
U+2648  ♈   ARIES
U+2649  ♉   TAURUS
U+264A  ♊   GEMINI
U+264B  ♋   CANCER
U+264C  ♌   LEO
U+264D  ♍   VIRGO
U+264E  ♎   LIBRA
U+264F  ♏   SCORPIUS
U+2650  ♐   SAGITTARIUS
U+2651  ♑   CAPRICORN
U+2652  ♒   AQUARIUS
U+2653  ♓   PISCES
U+2654  ♔   WHITE CHESS KING
U+2655  ♕   WHITE CHESS QUEEN
U+2656  ♖   WHITE CHESS ROOK
U+2657  ♗   WHITE CHESS BISHOP
U+2658  ♘   WHITE CHESS KNIGHT
U+2659  ♙   WHITE CHESS PAWN
U+265A  ♚   BLACK CHESS KING
U+265B  ♛   BLACK CHESS QUEEN
U+265C  ♜   BLACK CHESS ROOK
U+265D  ♝   BLACK CHESS BISHOP
U+265E  ♞   BLACK CHESS KNIGHT
U+265F  ♟   BLACK CHESS PAWN
U+2660  ♠   BLACK SPADE SUIT
U+2661  ♡   WHITE HEART SUIT
U+2662  ♢   WHITE DIAMOND SUIT
U+2663  ♣   BLACK CLUB SUITE
U+2664  ♤   WHITE SPADE SUIT
U+2665  ♥   BLACK HEART SUIT
U+2666  ♦   BLACK DIAMOND SUIT
U+2667  ♧   WHITE CLUB SUITE
U+2668  ♨   HOT SPRINGS
U+2669  ♩   QUARTER NOTE
U+266A  ♪   EIGHTH NOTE
U+266B  ♫   BEAMED EIGHTH NOTES
U+266C  ♬   BEAMED SIXTEENTH NOTES
U+266D  ♭   MUSIC FLAT SIGN
U+266E  ♮   MUSIC NATURAL SIGN
U+266F  ♯   MUSIC SHARP SIGN
U+267A  ♺   RECYCLING SYMBOL FOR GENERIC MATERIALS
U+267B  ♻   BLACK UNIVERSAL RECYCLING SYMBOL
U+267C  ♼   RECYCLED PAPER SYMBOL
U+267D  ♽   PARTIALLY-RECYCLED PAPER SYMBOL
U+267E  ♾   PERMANENT PAPER SIGN
U+267F  ♿   WHEELCHAIR SYMBOL
U+2680  ⚀   DIE FACE-1
U+2681  ⚁   DIE FACE-2
U+2682  ⚂   DIE FACE-3
U+2683  ⚃   DIE FACE-4
U+2684  ⚄   DIE FACE-5
U+2685  ⚅   DIE FACE-6
U+2686  ⚆   WHITE CIRCLE WITH DOT RIGHT
U+2687  ⚇   WHITE CIRCLE WITH TWO DOTS
U+2688  ⚈   BLACK CIRCLE WITH WHITE DOT RIGHT
U+2689  ⚉   BLACK CIRCLE WITH TWO WHITE DOTS
U+268A  ⚊   MONOGRAM FOR YANG
U+268B  ⚋   MONOGRAM FOR YIN
U+268C  ⚌   DIGRAM FOR GREATER YANG
U+268D  ⚍   DIGRAM FOR LESSER YIN
U+268E  ⚎   DIGRAM FOR LESSER YANG
U+268F  ⚏   DIGRAM FOR GREATER YIN
U+2690  ⚐   WHITE FLAG
U+2691  ⚑   BLACK FLAG
U+2692  ⚒   HAMMER AND PICK
U+2693  ⚓   ANCHOR
U+2694  ⚔   CROSSED SWORDS
U+2695  ⚕   STAFF OF AESCULAPIUS
U+2696  ⚖   SCALES
U+2697  ⚗   ALEMBIC
U+2698  ⚘   FLOWER
U+2699  ⚙   GEAR
U+269A  ⚚   STAFF OF HERMES
U+269B  ⚛   ATOM SYMBOL
U+269C  ⚜   FLEUR-DE-LIS
U+269D  ⚝   OUTLINED WHITE STAR
U+269E  ⚞   THREE LINES CONVERGING RIGHT
U+269F  ⚟   THREE LINES CONVERGING LEFT
U+26A0  ⚠   WARNING SIGN
U+26A1  ⚡   HIGH VOLTAGE SIGN
U+26A2  ⚢   DOUBLED FEMALE SIGN
U+26A3  ⚣   DOUBLED MALE SIGN
U+26A4  ⚤   INTERLOCKED FEMALE AND MALE SIGN
U+26A5  ⚥   MALE AND FEMALE SIGN
U+26A6  ⚦   MALE WITH STROKE SIGN
U+26A7  ⚧   MALE WITH STROKE AND MALE AND FEMALE SIGN
U+26A8  ⚨   VERTICAL MALE WITH STROKE SIGN
U+26A9  ⚩   HORIZONTAL MALE WITH STROKE SIGN
U+26AA  ⚪   MEDIUM WHITE CIRCLE
U+26AB  ⚫   MEDIUM BLACK CIRCLE
U+26BD  ⚽   SOCCER BALL
U+26BE  ⚾   BASEBALL
U+26BF  ⚿   SQUARED KEY
U+26C0  ⛀   WHITE DRAUGHTSMAN
U+26C1  ⛁   WHITE DRAUGHTS KING
U+26C2  ⛂   BLACK DRAUGHTSMAN
U+26C3  ⛃   BLACK DRAUGHTS KING
U+26C4  ⛄   SNOWMAN WITHOUT SNOW
U+26C5  ⛅   SUN BEHIND CLOUD
U+26C6  ⛆   RAIN
U+26C7  ⛇   BLACK SNOWMAN
U+26C8  ⛈   THUNDER CLOUD AND RAIN
U+26C9  ⛉   TURNED WHITE SHOGI PIECE
U+26CA  ⛊   TURNED BLACK SHOGI PIECE
U+26CB  ⛋   WHITE DIAMOND IN SQUARE
U+26CC  ⛌   CROSSING LANES
U+26CD  ⛍   DISABLED CAR
U+26CE  ⛎   OPHIUCHUS
U+26CF  ⛏   PICK
U+26D0  ⛐   CAR SLIDING
U+26D1  ⛑   HELMET WITH WHITE CROSS
U+26D2  ⛒   CIRCLED CROSSING LANES
U+26D3  ⛓   CHAINS
U+26D4  ⛔   NO ENTRY
U+26D5  ⛕   ALTERNATE ONE-WAY LEFT WAY TRAFFIC
U+26D6  ⛖   BLACK TWO-WAY LEFT WAY TRAFFIC
U+26D7  ⛗   WHITE TWO-WAY LEFT WAY TRAFFIC
U+26D8  ⛘   BLACK LEFT LANE MERGE
U+26D9  ⛙   WHITE LEFT LANE MERGE
U+26DA  ⛚   DRIVE SLOW SIGN
U+26DB  ⛛   HEAVY WHITE DOWN-POINTING TRIANGLE
U+26DC  ⛜   LEFT CLOSED ENTRY
U+26DD  ⛝   SQUARED SALTIRE
U+26DE  ⛞   FALLING DIAGONAL IN WHITE CIRCLE IN BLACK SQUARE
U+26DF  ⛟   BLACK TRUCK
U+26E0  ⛠   RESTRICTED LEFT ENTRY-1
U+26E1  ⛡   RESTRICTED LEFT ENTRY-2
U+26E2  ⛢   ASTRONOMICAL SYMBOL FOR URANUS
U+26E3  ⛣   HEAVY CIRCLE WITH STROKE AND TWO DOTS ABOVE
U+26E4  ⛤   PENTAGRAM
U+26E5  ⛥   RIGHT-HANDED INTERLACED PENTAGRAM
U+26E6  ⛦   LEFT-HANDED INTERLACED PENTAGRAM
U+26E7  ⛧   INVERTED PENTAGRAM
U+26E8  ⛨   BLACK CROSS ON SHIELD
U+26E9  ⛩   SHINTO SHRINE
U+26EA  ⛪   CHURCH
U+26EB  ⛫   CASTLE
U+26EC  ⛬   HISTORIC SITE
U+26ED  ⛭   GEAR WITHOUT HUB
U+26EE  ⛮   GEAR WITH HANDLES
U+26EF  ⛯   MAP SYMBOL FOR LIGHTHOUSE
U+26F0  ⛰   MOUNTAIN
U+26F1  ⛱   UMBRELLA ON GROUND
U+26F2  ⛲   FOUNTAIN
U+26F3  ⛳   FLAG IN HOLE
U+26F4  ⛴   FERRY
U+26F5  ⛵   SAILBOAT
U+26F6  ⛶   SQUARE FOUR CORNERS
U+26F7  ⛷   SKIER
U+26F8  ⛸   ICE SKATE
U+26F9  ⛹   PERSON WITH BALL
U+26FA  ⛺   TENT
U+26FD  ⛽   FUEL PUMP
U+26FE  ⛾   CUP ON BLACK SQUARE
U+26FF  ⛿   WHITE FLAG WITH HORIZONTAL MIDDLE BLACK STRIPE
U+2701  ✁   UPPER BLADE SCISSORS
U+2702  ✂   BLACK SCISSORS
U+2703  ✃   LOWER BLADE SCISSORS
U+2704  ✄   WHITE SCISSORS
U+2705  ✅   WHITE HEAVY CHECK MARK
U+2706  ✆   TELEPHONE LOCATION SIGN
U+2707  ✇   TAPE DRIVE
U+2708  ✈   AIRPLANE
U+2709  ✉   ENVELOPE
U+270A  ✊   RAISED FIST
U+270B  ✋   RAISED HAND
U+270C  ✌   VICTORY HAND
U+270D  ✍   WRITING HAND
U+270E  ✎   LOWER RIGHT PENCIL
U+270F  ✏   PENCIL
U+2710  ✐   UPPER RIGHT PENCIL
U+2711  ✑   WHITE NIB
U+2712  ✒   BLACK NIB
U+2713  ✓   CHECK MARK
U+2714  ✔   HEAVY CHECK MARK
U+2715  ✕   MULTIPLICATION X
U+2716  ✖   HEAVY MULTIPLICATION X
U+2717  ✗   BALLOT X
U+2718  ✘   HEAVY BALLOT X
U+2719  ✙   OUTLINED GREEK CROSS
U+271A  ✚   HEAVY GREEK CROSS
U+271B  ✛   OPEN CENTRE CROSS
U+271C  ✜   HEAVY OPEN CENTRE CROSS
U+271D  ✝   LATIN CROSS
U+271E  ✞   SHADOWED WHITE LATIN CROSS
U+271F  ✟   OUTLINED LATIN CROSS
U+2720  ✠   MALTESE CROSS
U+2721  ✡   STAR OF DAVID
U+2722  ✢   FOUR TEARDROP-SPOKED ASTERISK
U+2723  ✣   FOUR BALLOON-SPOKED ASTERISK
U+2724  ✤   HEAVY FOUR BALLOON-SPOKED ASTERISK
U+2725  ✥   FOUR CLUB-SPOKED ASTERISK
U+2726  ✦   BLACK FOUR POINTED STAR
U+2727  ✧   WHITE FOUR POINTED STAR
U+2728  ✨   SPARKLES
U+2729  ✩   STRESS OUTLINED WHITE STAR
U+272A  ✪   CIRCLED WHITE STAR
U+272B  ✫   OPEN CENTRE BLACK STAR
U+272C  ✬   BLACK CENTRE WHITE STAR
U+272D  ✭   OUTLINED BLACK STAR
U+272E  ✮   HEAVY OUTLINED BLACK STAR
U+272F  ✯   PINWHEEL STAR
U+2730  ✰   SHADOWED WHITE STAR
U+2731  ✱   HEAVY ASTERISK
U+2732  ✲   OPEN CENTRE ASTERISK
U+2733  ✳   EIGHT SPOKED ASTERISK
U+2734  ✴   EIGHT POINTED BLACK STAR
U+2735  ✵   EIGHT POINTED PINWHEEL STAR
U+2736  ✶   SIX POINTED BLACK STAR
U+2737  ✷   EIGHT POINTED RECTILINEAR BLACK STAR
U+2738  ✸   HEAVY EIGHT POINTED RECTILINEAR BLACK STAR
U+2739  ✹   TWELVE POINTED BLACK STAR
U+273A  ✺   SIXTEEN POINTED ASTERISK
U+273B  ✻   TEARDROP-SPOKED ASTERISK
U+273C  ✼   OPEN CENTRE TEARDROP-SPOKED ASTERISK
U+273D  ✽   HEAVY TEARDROP-SPOKED ASTERISK
U+273E  ✾   SIX PETALLED BLACK AND WHITE FLORETTE
U+273F  ✿   BLACK FLORETTE
U+2740  ❀   WHITE FLORETTE
U+2741  ❁   EIGHT PETALLED OUTLINED BLACK FLORETTE
U+2742  ❂   CIRCLED OPEN CENTRE EIGHT POINTED STAR
U+2743  ❃   HEAVY TEARDROP-SPOKED PINWHEEL ASTERISK
U+2744  ❄   SNOWFLAKE
U+2745  ❅   TIGHT TRIFOLIATE SNOWFLAKE
U+2746  ❆   HEAVY CHEVRON SNOWFLAKE
U+2747  ❇   SPARKLE
U+2748  ❈   HEAVY SPARKLE
U+2749  ❉   BALLOON-SPOKED ASTERISK
U+274A  ❊   EIGHT TEARDROP-SPOKED PROPELLER ASTERISK
U+274B  ❋   HEAVY EIGHT TEARDROP-SPOKED PROPELLER ASTERISK
U+274C  ❌   CROSS MARK
U+274D  ❍   SHADOWED WHITE CIRCLE
U+274E  ❎   NEGATIVE SQUARED CROSS MARK
U+2753  ❓   BLACK QUESTION MARK ORNAMENT
U+2754  ❔   WHITE QUESTION MARK ORNAMENT
U+2755  ❕   WHITE EXCLAMATION MARK ORNAMENT
U+2756  ❖   BLACK DIAMOND MINUS WHITE X
U+2757  ❗   HEAVY EXCLAMATION MARK SYMBOL
U+275B  ❛   HEAVY SINGLE TURNED COMMA QUOTATION MARK ORNAMENT
U+275C  ❜   HEAVY SINGLE COMMA QUOTATION MARK ORNAMENT
U+275D  ❝   HEAVY DOUBLE TURNED COMMA QUOTATION MARK ORNAMENT
U+275E  ❞   HEAVY DOUBLE COMMA QUOTATION MARK ORNAMENT
U+275F  ❟   HEAVY LOW SINGLE COMMA QUOTATION MARK ORNAMENT
U+2760  ❠   HEAVY LOW DOUBLE COMMA QUOTATION MARK ORNAMENT
U+2761  ❡   CURVED STEM PARAGRAPH SIGN ORNAMENT
U+2762  ❢   HEAVY EXCLAMATION MARK ORNAMENT
U+2763  ❣   HEAVY HEART EXCLAMATION MARK ORNAMENT
U+2764  ❤   HEAVY BLACK HEART
U+2765  ❥   ROTATED HEAVY BLACK HEART BULLET
U+2766  ❦   FLORAL HEART
U+2767  ❧   ROTATED FLORAL HEART BULLET
U+276C  ❬   MEDIUM LEFT-POINTING ANGLE BRACKET ORNAMENT
U+276D  ❭   MEDIUM RIGHT-POINTING ANGLE BRACKET ORNAMENT
U+276E  ❮   HEAVY LEFT-POINTING ANGLE QUOTATION MARK ORNAMENT
U+276F  ❯   HEAVY RIGHT-POINTING ANGLE QUOTATION MARK ORNAMENT
U+2770  ❰   HEAVY LEFT-POINTING ANGLE BRACKET ORNAMENT
U+2771  ❱   HEAVY RIGHT-POINTING ANGLE BRACKET ORNAMENT
U+2794  ➔   HEAVY WIDE-HEADED RIGHTWARDS ARROW
U+2795  ➕   HEAVY PLUS SIGN
U+2796  ➖   HEAVY MINUS SIGN
U+2797  ➗   HEAVY DIVISION SIGN
U+2798  ➘   HEAVY SOUTH EAST ARROW
U+2799  ➙   HEAVY RIGHTWARDS ARROW
U+279A  ➚   HEAVY NORTH EAST ARROW
U+279B  ➛   DRAFTING POINT RIGHTWARDS ARROW
U+279C  ➜   HEAVY ROUND-TIPPED RIGHTWARDS ARROW
U+279D  ➝   TRIANGLE-HEADED RIGHTWARDS ARROW
U+279E  ➞   HEAVY TRIANGLE-HEADED RIGHTWARDS ARROW
U+279F  ➟   DASHED TRIANGLE-HEADED RIGHTWARDS ARROW
U+27A0  ➠   HEAVY DASHED TRIANGLE-HEADED RIGHTWARDS ARROW
U+27A1  ➡   BLACK RIGHTWARDS ARROW
U+27A2  ➢   THREE-D TOP-LIGHTED RIGHTWARDS ARROWHEAD
U+27A3  ➣   THREE-D BOTTOM-LIGHTED RIGHTWARDS ARROWHEAD
U+27A4  ➤   BLACK RIGHTWARDS ARROWHEAD
U+27A5  ➥   HEAVY BLACK CURVED DOWNWARDS AND RIGHTWARDS ARROW
U+27A6  ➦   HEAVY BLACK CURVED UPWARDS AND RIGHTWARDS ARROW
U+27A7  ➧   SQUAT BLACK RIGHTWARDS ARROW
U+27A8  ➨   HEAVY CONCAVE-POINTED BLACK RIGHTWARDS ARROW
U+27A9  ➩   RIGHT-SHADED WHITE RIGHTWARDS ARROW
U+27AA  ➪   LEFT-SHADED WHITE RIGHTWARDS ARROW
U+27AB  ➫   BACK-TILTED SHADOWED WHITE RIGHTWARDS ARROW
U+27AC  ➬   FRONT-TILTED SHADOWED WHITE RIGHTWARDS ARROW
U+27AD  ➭   HEAVY LOWER RIGHT-SHADOWED WHITE RIGHTWARDS ARROW
U+27AE  ➮   HEAVY UPPER RIGHT-SHADOWED WHITE RIGHTWARDS ARROW
U+27AF  ➯   NOTCHED LOWER RIGHT-SHADOWED WHITE RIGHTWARDS ARROW
U+27B0  ➰   CURLY LOOP
U+27B1  ➱   NOTCHED UPPER RIGHT-SHADOWED WHITE RIGHTWARDS ARROW
U+27B2  ➲   CIRCLED HEAVY WHITE RIGHTWARDS ARROW
U+27B3  ➳   WHITE-FEATHERED RIGHTWARDS ARROW
U+27B4  ➴   BLACK-FEATHERED SOUTH EAST ARROW
U+27B5  ➵   BLACK-FEATHERED RIGHTWARDS ARROW
U+27B6  ➶   BLACK-FEATHERED NORTH EAST ARROW
U+27B7  ➷   HEAVY BLACK-FEATHERED SOUTH EAST ARROW
U+27B8  ➸   HEAVY BLACK-FEATHERED RIGHTWARDS ARROW
U+27B9  ➹   HEAVY BLACK-FEATHERED NORTH EAST ARROW
U+27BA  ➺   TEARDROP-BARBED RIGHTWARDS ARROW
U+27BB  ➻   HEAVY TEARDROP-SHANKED RIGHTWARDS ARROW
U+27BC  ➼   WEDGE-TAILED RIGHTWARDS ARROW
U+27BD  ➽   HEAVY WEDGE-TAILED RIGHTWARDS ARROW
U+27BE  ➾   OPEN-OUTLINED RIGHTWARDS ARROW
U+27C0  ⟀   THREE DIMENSIONAL ANGLE
U+27E8  ⟨   MATHEMATICAL LEFT ANGLE BRACKET
U+27E9  ⟩   MATHEMATICAL RIGHT ANGLE BRACKET
U+27EA  ⟪   MATHEMATICAL LEFT DOUBLE ANGLE BRACKET
U+27EB  ⟫   MATHEMATICAL RIGHT DOUBLE ANGLE BRACKET
U+27F0  ⟰   UPWARDS QUADRUPLE ARROW
U+27F1  ⟱   DOWNWARDS QUADRUPLE ARROW
U+27F2  ⟲   ANTICLOCKWISE GAPPED CIRCLE ARROW
U+27F3  ⟳   CLOCKWISE GAPPED CIRCLE ARROW
U+27F4  ⟴   RIGHT ARROW WITH CIRCLED PLUS
U+27F5  ⟵   LONG LEFTWARDS ARROW
U+27F6  ⟶   LONG RIGHTWARDS ARROW
U+27F7  ⟷   LONG LEFT RIGHT ARROW
U+27F8  ⟸   LONG LEFTWARDS DOUBLE ARROW
U+27F9  ⟹   LONG RIGHTWARDS DOUBLE ARROW
U+27FA  ⟺   LONG LEFT RIGHT DOUBLE ARROW
U+27FB  ⟻   LONG LEFTWARDS ARROW FROM BAR
U+27FC  ⟼   LONG RIGHTWARDS ARROW FROM BAR
U+27FD  ⟽   LONG LEFTWARDS DOUBLE ARROW FROM BAR
U+27FE  ⟾   LONG RIGHTWARDS DOUBLE ARROW FROM BAR
U+27FF  ⟿   LONG RIGHTWARDS SQUIGGLE ARROW
U+2900  ⤀   RIGHTWARDS TWO-HEADED ARROW WITH VERTICAL STROKE
U+2901  ⤁   RIGHTWARDS TWO-HEADED ARROW WITH DOUBLE VERTICAL STROKE
U+2902  ⤂   LEFTWARDS DOUBLE ARROW WITH VERTICAL STROKE
U+2903  ⤃   RIGHTWARDS DOUBLE ARROW WITH VERTICAL STROKE
U+2904  ⤄   LEFT RIGHT DOUBLE ARROW WITH VERTICAL STROKE
U+2905  ⤅   RIGHTWARDS TWO-HEADED ARROW FROM BAR
U+2906  ⤆   LEFTWARDS DOUBLE ARROW FROM BAR
U+2907  ⤇   RIGHTWARDS DOUBLE ARROW FROM BAR
U+2908  ⤈   DOWNWARDS ARROW WITH HORIZONTAL STROKE
U+2909  ⤉   UPWARDS ARROW WITH HORIZONTAL STROKE
U+290A  ⤊   UPWARDS TRIPLE ARROW
U+290B  ⤋   DOWNWARDS TRIPLE ARROW
U+290C  ⤌   LEFTWARDS DOUBLE DASH ARROW
U+290D  ⤍   RIGHTWARDS DOUBLE DASH ARROW
U+290E  ⤎   LEFTWARDS TRIPLE DASH ARROW
U+290F  ⤏   RIGHTWARDS TRIPLE DASH ARROW
U+2910  ⤐   RIGHTWARDS TWO-HEADED TRIPLE DASH ARROW
U+2911  ⤑   RIGHTWARDS ARROW WITH DOTTED STEM
U+2912  ⤒   UPWARDS ARROW TO BAR
U+2913  ⤓   DOWNWARDS ARROW TO BAR
U+2914  ⤔   RIGHTWARDS ARROW WITH TAIL WITH VERTICAL STROKE
U+2915  ⤕   RIGHTWARDS ARROW WITH TAIL WITH DOUBLE VERTICAL STROKE
U+2916  ⤖   RIGHTWARDS TWO-HEADED ARROW WITH TAIL
U+2917  ⤗   RIGHTWARDS TWO-HEADED ARROW WITH TAIL WITH VERTICAL STROKE
U+2918  ⤘   RIGHTWARDS TWO-HEADED ARROW WITH TAIL WITH DOUBLE VERTICAL STROKE
U+2919  ⤙   LEFTWARDS ARROW-TAIL
U+291A  ⤚   RIGHTWARDS ARROW-TAIL
U+291B  ⤛   LEFTWARDS DOUBLE ARROW-TAIL
U+291C  ⤜   RIGHTWARDS DOUBLE ARROW-TAIL
U+291D  ⤝   LEFTWARDS ARROW TO BLACK DIAMOND
U+291E  ⤞   RIGHTWARDS ARROW TO BLACK DIAMOND
U+291F  ⤟   LEFTWARDS ARROW FROM BAR TO BLACK DIAMOND
U+2920  ⤠   RIGHTWARDS ARROW FROM BAR TO BLACK DIAMOND
U+2921  ⤡   NORTHWEST AND SOUTH EAST ARROW
U+2922  ⤢   NORTHEAST AND SOUTH WEST ARROW
U+2923  ⤣   NORTH WEST ARROW WITH HOOK
U+2924  ⤤   NORTH EAST ARROW WITH HOOK
U+2925  ⤥   SOUTH EAST ARROW WITH HOOK
U+2926  ⤦   SOUTH WEST ARROW WITH HOOK
U+2927  ⤧   NORTH WEST ARROW AND NORTH EAST ARROW
U+2928  ⤨   NORTH EAST ARROW AND SOUTH EAST ARROW
U+2929  ⤩   SOUTH EAST ARROW AND SOUTH WEST ARROW
U+292A  ⤪   SOUTH WEST ARROW AND NORTH WEST ARROW
U+292B  ⤫   RISING DIAGONAL CROSSING FALLING DIAGONAL
U+292C  ⤬   FALLING DIAGONAL CROSSING RISING DIAGONAL
U+292D  ⤭   SOUTH EAST ARROW CROSSING NORTH EAST ARROW
U+292E  ⤮   NORTH EAST ARROW CROSSING SOUTH EAST ARROW
U+292F  ⤯   FALLING DIAGONAL CROSSING NORTH EAST ARROW
U+2930  ⤰   RISING DIAGONAL CROSSING SOUTH EAST ARROW
U+2931  ⤱   NORTH EAST ARROW CROSSING NORTH WEST ARROW
U+2932  ⤲   NORTH WEST ARROW CROSSING NORTH EAST ARROW
U+2933  ⤳   WAVE ARROW POINTING DIRECTLY RIGHT
U+2934  ⤴   ARROW POINTING RIGHTWARDS THEN CURVING UPWARDS
U+2935  ⤵   ARROW POINTING RIGHTWARDS THEN CURVING DOWNWARDS
U+2936  ⤶   ARROW POINTING DOWNWARDS THEN CURVING LEFTWARDS
U+2937  ⤷   ARROW POINTING DOWNWARDS THEN CURVING RIGHTWARDS
U+2938  ⤸   RIGHT-SIDE ARC CLOCKWISE ARROW
U+2939  ⤹   LEFT-SIDE ARC ANTICLOCKWISE ARROW
U+293A  ⤺   TOP ARC ANTICLOCKWISE ARROW
U+293B  ⤻   BOTTOM ARC ANTICLOCKWISE ARROW
U+293C  ⤼   TOP ARC CLOCKWISE ARROW WITH MINUS
U+293D  ⤽   TOP ARC ANTICLOCKWISE ARROW WITH PLUS
U+293E  ⤾   LOWER RIGHT SEMICIRCULAR CLOCKWISE ARROW
U+293F  ⤿   LOWER LEFT SEMICIRCULAR ANTICLOCKWISE ARROW
U+2940  ⥀   ANTICLOCKWISE CLOSED CIRCLE ARROW
U+2941  ⥁   CLOCKWISE CLOSED CIRCLE ARROW
U+2942  ⥂   RIGHTWARDS ARROW ABOVE SHORT LEFTWARDS ARROW
U+2943  ⥃   LEFTWARDS ARROW ABOVE SHORT RIGHTWARDS ARROW
U+2944  ⥄   SHORT RIGHTWARDS ARROW ABOVE LEFTWARDS ARROW
U+2945  ⥅   RIGHTWARDS ARROW WITH PLUS BELOW
U+2946  ⥆   LEFTWARDS ARROW WITH PLUS BELOW
U+2962  ⥢   LEFTWARDS HARPOON WITH BARB UP ABOVE LEFTWARDS HARPOON WITH BARB DOWN
U+2963  ⥣   UPWARDS HARPOON WITH BARB LEFT BESIDE UPWARDS HARPOON WITH BARB RIGHT
U+2964  ⥤   RIGHTWARDS HARPOON WITH BARB UP ABOVE RIGHTWARDS HARPOON WITH BARB DOWN
U+2965  ⥥   DOWNWARDS HARPOON WITH BARB LEFT BESIDE DOWNWARDS HARPOON WITH BARB RIGHT
U+2966  ⥦   LEFTWARDS HARPOON WITH BARB UP ABOVE RIGHTWARDS HARPOON WITH BARB UP
U+2967  ⥧   LEFTWARDS HARPOON WITH BARB DOWN ABOVE RIGHTWARDS HARPOON WITH BARB DOWN
U+2968  ⥨   RIGHTWARDS HARPOON WITH BARB UP ABOVE LEFTWARDS HARPOON WITH BARB UP
U+2969  ⥩   RIGHTWARDS HARPOON WITH BARB DOWN ABOVE LEFTWARDS HARPOON WITH BARB DOWN
U+296A  ⥪   LEFTWARDS HARPOON WITH BARB UP ABOVE LONG DASH
U+296B  ⥫   LEFTWARDS HARPOON WITH BARB DOWN BELOW LONG DASH
U+296C  ⥬   RIGHTWARDS HARPOON WITH BARB UP ABOVE LONG DASH
U+296D  ⥭   RIGHTWARDS HARPOON WITH BARB DOWN BELOW LONG DASH
U+296E  ⥮   UPWARDS HARPOON WITH BARB LEFT BESIDE DOWNWARDS HARPOON WITH BARB RIGHT
U+296F  ⥯   DOWNWARDS HARPOON WITH BARB LEFT BESIDE UPWARDS HARPOON WITH BARB RIGHT
U+2989  ⦉   Z NOTATION LEFT BINDING BRACKET
U+298A  ⦊   Z NOTATION RIGHT BINDING BRACKET
U+2991  ⦑   LEFT ANGLE BRACKET WITH DOT
U+2992  ⦒   RIGHT ANGLE BRACKET WITH DOT
U+2993  ⦓   LEFT ARC LESS-THAN BRACKET
U+2994  ⦔   RIGHT ARC GREATER-THAN BRACKET
U+2995  ⦕   DOUBLE LEFT ARC GREATER-THAN BRACKET
U+2996  ⦖   DOUBLE RIGHT ARC LESS-THAN BRACKET
U+29A8  ⦨   MEASURED ANGLE WITH OPEN ARM ENDING IN ARROW POINTING UP AND RIGHT
U+29A9  ⦩   MEASURED ANGLE WITH OPEN ARM ENDING IN ARROW POINTING UP AND LEFT
U+29AA  ⦪   MEASURED ANGLE WITH OPEN ARM ENDING IN ARROW POINTING DOWN AND RIGHT
U+29AB  ⦫   MEASURED ANGLE WITH OPEN ARM ENDING IN ARROW POINTING DOWN AND LEFT
U+29AC  ⦬   MEASURED ANGLE WITH OPEN ARM ENDING IN ARROW POINTING RIGHT AND UP
U+29AD  ⦭   MEASURED ANGLE WITH OPEN ARM ENDING IN ARROW POINTING LEFT AND UP
U+29AE  ⦮   MEASURED ANGLE WITH OPEN ARM ENDING IN ARROW POINTING RIGHT AND DOWN
U+29AF  ⦯   MEASURED ANGLE WITH OPEN ARM ENDING IN ARROW POINTING LEFT AND DOWN
U+29BE  ⦾   CIRCLED WHITE BULLET
U+29BF  ⦿   CIRCLED BULLET
U+29C9  ⧉   TWO JOINED SQUARES
U+29CE  ⧎   RIGHT TRIANGLE ABOVE LEFT TRIANGLE
U+29CF  ⧏   LEFT TRIANGLE BESIDE VERTICAL BAR
U+29D0  ⧐   VERTICAL BAR BESIDE RIGHT TRIANGLE
U+29D1  ⧑   BOWTIE WITH LEFT HALF BLACK
U+29D2  ⧒   BOWTIE WITH RIGHT HALF BLACK
U+29D3  ⧓   BLACK BOWTIE
U+29D4  ⧔   TIMES WITH LEFT HALF BLACK
U+29D5  ⧕   TIMES WITH RIGHT HALF BLACK
U+29D6  ⧖   WHITE HOURGLASS
U+29D7  ⧗   BLACK HOURGLASS
U+29E8  ⧨   DOWN-POINTING TRIANGLE WITH LEFT HALF BLACK
U+29E9  ⧩   DOWN-POINTING TRIANGLE WITH RIGHT HALF BLACK
U+29EA  ⧪   BLACK DIAMOND WITH DOWN ARROW
U+29EB  ⧫   BLACK LOZENGE
U+29EC  ⧬   WHITE CIRCLE WITH DOWN ARROW
U+29ED  ⧭   BLACK CIRCLE WITH DOWN ARROW
U+29F4  ⧴   RULE-DELAYED
U+29FC  ⧼   LEFT-POINTING CURVED ANGLE BRACKET
U+29FD  ⧽   RIGHT-POINTING CURVED ANGLE BRACKET
U+29FE  ⧾   TINY
U+29FF  ⧿   MINY
U+2B00  ⬀   NORTH EAST WHITE ARROW
U+2B01  ⬁   NORTH WEST WHITE ARROW
U+2B02  ⬂   SOUTH EAST WHITE ARROW
U+2B03  ⬃   SOUTH WEST WHITE ARROW
U+2B04  ⬄   LEFT RIGHT WHITE ARROW
U+2B05  ⬅   LEFTWARDS BLACK ARROW
U+2B06  ⬆   UPWARDS BLACK ARROW
U+2B07  ⬇   DOWNWARDS BLACK ARROW
U+2B08  ⬈   NORTH EAST BLACK ARROW
U+2B09  ⬉   NORTH WEST BLACK ARROW
U+2B0A  ⬊   SOUTH EAST BLACK ARROW
U+2B0B  ⬋   SOUTHWEST BLACK ARROW
U+2B0C  ⬌   LEFT RIGHT BLACK ARROW
U+2B0D  ⬍   UP DOWN BLACK ARROW
U+2B0E  ⬎   RIGHTWARDS ARROW WITH TIP DOWNWARDS
U+2B0F  ⬏   RIGHTWARDS ARROW WITH TIP UPWARDS
U+2B10  ⬐   LEFTWARDS ARROW WITH TIP DOWNWARDS
U+2B11  ⬑   LEFTWARDS ARROW WITH TIP UPWARDS
U+2B12  ⬒   SQUARE WITH TOP HALF BLACK
U+2B13  ⬓   SQUARE WITH BOTTOM HALF BLACK
U+2B14  ⬔   SQUARE WITH UPPER RIGHT DIAGONAL HALF BLACK
U+2B15  ⬕   SQUARE WITH LOWER LEFT DIAGONAL HALF BLACK
U+2B16  ⬖   DIAMOND WITH LEFT HALF BLACK
U+2B17  ⬗   DIAMOND WITH RIGHT HALF BLACK
U+2B18  ⬘   DIAMOND WITH TOP HALF BLACK
U+2B19  ⬙   DIAMOND WITH BOTTOM HALF BLACK
U+2B1A  ⬚   DOTTED SQUARE
U+2B1B  ⬛   BLACK LARGE SQUARE
U+2B1C  ⬜   WHITE LARGE SQUARE
U+2B1D  ⬝   BLACK VERY SMALL SQUARE
U+2B1E  ⬞   WHITE VERY SMALL SQUARE
U+2B1F  ⬟   BLACK PENTAGON
U+2B20  ⬠   WHITE PENTAGON
U+2B21  ⬡   WHITE HEXAGON
U+2B22  ⬢   BLACK HEXAGON
U+2B23  ⬣   HORIZONTAL BLACK HEXAGON
U+2B24  ⬤   BLACK LARGE CIRCLE
U+2B25  ⬥   BLACK MEDIUM DIAMOND
U+2B26  ⬦   WHITE MEDIUM DIAMOND
U+2B27  ⬧   BLACK MEDIUM LOZENGE
U+2B28  ⬨   WHITE MEDIUM LOZENGE
U+2B29  ⬩   BLACK SMALL DIAMOND
U+2B2A  ⬪   BLACK SMALL LOZENGE
U+2B2B  ⬫   WHITE SMALL LOZENGE
U+2B30  ⬰   LEFT ARROW WITH SMALL CIRCLE
U+2B31  ⬱   THREE LEFTWARDS ARROWS
U+2B32  ⬲   LEFT ARROW WITH CIRCLED PLUS
U+2B33  ⬳   LONG LEFTWARDS SQUIGGLE ARROW
U+2B34  ⬴   LEFTWARDS TWO-HEADED ARROW WITH VERTICAL STROKE
U+2B35  ⬵   LEFTWARDS TWO-HEADED ARROW WITH DOUBLE VERTICAL STROKE
U+2B36  ⬶   LEFTWARDS TWO-HEADED ARROW FROM BAR
U+2B37  ⬷   LEFTWARDS TWO-HEADED TRIPLE DASH ARROW
U+2B38  ⬸   LEFTWARDS ARROW WITH DOTTED STEM
U+2B39  ⬹   LEFTWARDS ARROW WITH TAIL WITH VERTICAL STROKE
U+2B3A  ⬺   LEFTWARDS ARROW WITH TAIL WITH DOUBLE VERTICAL STROKE
U+2B3B  ⬻   LEFTWARDS TWO-HEADED ARROW WITH TAIL
U+2B3C  ⬼   LEFTWARDS TWO-HEADED ARROW WITH TAIL WITH VERTICAL STROKE
U+2B3D  ⬽   LEFTWARDS TWO-HEADED ARROW WITH TAIL WITH DOUBLE VERTICAL STROKE
U+2B3E  ⬾   LEFTWARDS ARROW THROUGH X
U+2B3F  ⬿   WAVE ARROW POINTING DIRECTLY LEFT
U+2B40  ⭀   EQUALS SIGN ABOVE LEFTWARDS ARROW
U+2B41  ⭁   REVERSE TILDE OPERATOR ABOVE LEFTWARDS ARROW
U+2B42  ⭂   LEFTWARDS ARROW ABOVE REVERSE ALMOST EQUAL TO
U+2B43  ⭃   RIGHTWARDS ARROW THROUGH GREATER-THAN
U+2B44  ⭄   RIGHTWARDS ARROW THROUGH SUPERSET
U+2B45  ⭅   LEFTWARDS QUADRUPLE ARROW
U+2B46  ⭆   RIGHTWARDS QUADRUPLE ARROW
U+2B47  ⭇   REVERSE TILDE OPERATOR ABOVE RIGHTWARDS ARROW
U+2B48  ⭈   RIGHTWARDS ARROW ABOVE REVERSE ALMOST EQUAL TO
U+2B49  ⭉   TILDE OPERATOR ABOVE LEFTWARDS ARROW
U+2B4A  ⭊   LEFTWARDS ARROW ABOVE ALMOST EQUAL TO
U+2B4B  ⭋   LEFTWARDS ARROW ABOVE REVERSE TILDE OPERATOR
U+2B4C  ⭌   RIGHTWARDS ARROW ABOVE REVERSE TILDE OPERATOR
U+2B50  ⭐   WHITE MEDIUM STAR
U+2B51  ⭑   BLACK SMALL STAR
U+2B52  ⭒   WHITE SMALL STAR
U+2B53  ⭓   BLACK RIGHT-POINTING PENTAGON
U+2B54  ⭔   WHITE RIGHT-POINTING PENTAGON
U+2B55  ⭕   HEAVY LARGE CIRCLE
U+2B56  ⭖   HEAVY OVAL WITH OVAL INSIDE
U+2B57  ⭗   HEAVY CIRCLE WITH CIRCLE INSIDE
U+2B58  ⭘   HEAVY CIRCLE
U+2B59  ⭙   HEAVY CIRCLED SALTIRE

选项 2：纯 CSS 雪佛龙

您可以仅使用 CSS 有效地创建 V 形

（不需要图像）。

很容易操作：

回转

厚度

颜色

尺寸

CLICK FOR DEMO ON JSFIDDLE

https://i.stack.imgur.com/x7HGq.jpg

CSS（高效的跨浏览器支持）

.chevron { 位置：相对；显示：块；高度：50px； /*高度应该是双边框*/ } .chevron::before, .chevron::after { position: absolute;显示：块；内容： ””;边框：25px 纯透明； /*调整大小*/ } /* 用左/右/下替换所有文本`top`来旋转人字形*/ .chevron::before { top: 0;边框顶部颜色：#b00； /*雪佛龙颜色*/ } .chevron::after { top: -10px; /*调整粗细*/border-top-color: #fff; /*匹配背景颜色*/ }

选项 3：CSS BASE64 图像图标

https://i.stack.imgur.com/WIULm.gif

https://i.stack.imgur.com/GTmwP.gif

https://i.stack.imgur.com/Iv3Nu.gif

仅使用几行 CSS，我们就可以将图像编码为 base64。

CLICK FOR DEMO ON JSFIDDLE

优点

无需以图像或字体的形式包含其他资源。

支持完整的 alpha 透明度。

全面的跨浏览器支持。

小图像/图标可以存储在数据库中。

缺点

更新/编辑可能会很麻烦。

由于生成了过多的代码标记，因此不适用于大图像。

CSS

.sorting,
.sorting_asc,
.sorting_desc{
    padding:4px 21px 4px 4px;
    cursor:pointer;
}
.sorting{
    background:url(data:image/gif;base64,R0lGODlhCwALAJEAAAAAAP///xUVFf///yH5BAEAAAMALAAAAAALAAsAAAIUnC2nKLnT4or00PvyrQwrPzUZshQAOw==) no-repeat center right;
}
.sorting_asc{
    background:url(data:image/gif;base64,R0lGODlhCwALAJEAAAAAAP///xUVFf///yH5BAEAAAMALAAAAAALAAsAAAIRnC2nKLnT4or00Puy3rx7VQAAOw==) no-repeat center right;
}
.sorting_desc{
    background:url(data:image/gif;base64,R0lGODlhCwALAJEAAAAAAP///xUVFf///yH5BAEAAAMALAAAAAALAAsAAAIPnI+py+0/hJzz0IruwjsVADs=) no-repeat center right;
}

抱歉，它们仅使用 Unicode。 :(

大的：

U+25B2（黑色上三角▲）

U+25BC（黑色下三角▼）

U+25C0（黑色左三角◀）

U+25B6（黑色右三角▶）

大白的：

U+25B3（白色上三角△）

U+25BD（白色下三角▽）

U+25C1（白色左三角◁）

U+25B7（白色右三角▷）

还有一些较小的三角形：

U+25B4（黑色向上小三角▴）

U+25C2（黑色左指小三角◂）

U+25BE（黑色向下小三角▾）

U+25B8（黑色右指小三角形▸）

还有一些白色的：

U+25C3（白色左指小三角◃）

U+25BF（白色向下小三角▿）

U+25B9（白色右指小三角▹）

U+25B5（白色向上小三角▵）

还有一些“尖”三角形。您可以在 Wikipedia 中阅读更多信息：
http://en.wikipedia.org/wiki/Geometric_Shapes

但不幸的是，它们都是 Unicode 而不是 ASCII。如果您仍想使用 ASCII，则可以使用仅使用 ^ 和 v 的图像文件。 （就像移动版的谷歌地图指的是古代移动版谷歌地图）

正如其他人还建议的那样，您还可以使用 HTML 创建三角形，使用 CSS 边框或 SVG 形状甚至 JavaScript 画布。

CSS

div{
    width: 0px;
    height: 0px;
    border-top: 10px solid black;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: none;
}

SVG

<svg width="16" height="10">
    <polygon points="0,0 16,0 8,10"/>
</svg>

JavaScript

var ctx = document.querySelector("canvas").getContext("2d");

// do not use with() outside of this demo!
with(ctx){
    beginPath();
    moveTo(0,0);
    lineTo(16,0);
    lineTo(8,10);
    fill();
    endPath();
}

演示

Spacing Modifier Letters 块中有文字箭头：

U+02C2  ˂   ˂  Modifier Letter Left  Arrowhead
U+02C3  ˃   ˃  Modifier Letter Right Arrowhead
U+02C4  ˄   ˄  Modifier Letter Up    Arrowhead
U+02C5  ˅   ˅  Modifier Letter Down  Arrowhead

由于您将这些箭头用于切换开关，您可能需要考虑使用以下样式而不是 unicode 字符使用 html 元素创建这些箭头。

.upparrow {
   height: 0;
   width: 0;
   border: 4px solid transparent;
   border-bottom-color: #000;
}

.downarrow {
   height: 0;
   width: 0;
   border: 4px solid transparent;
   border-top-color: #000;
}

http://jsfiddle.net/FrsGR/

有几种正确的方法可以显示向下的三角形。

方法一：使用十进制 HTML 实体

HTML：

▼

方法 2：使用十六进制 HTML 实体

HTML：

▼

方法三：直接使用字符

HTML：

▼

方法4：使用CSS

HTML：

<span class='icon-down'></span>

CSS：

.icon-down:before {
    content: "\25BC";
}

这三种方法中的每一种都应该具有相同的输出。对于其他符号，存在相同的三个选项。有些甚至还有第四个选项，允许您使用基于字符串的引用（例如 ♥ 来显示 ♥）。

您可以使用 Unicode-table.com 等参考网站来查找 UNICODE 支持哪些图标以及它们对应的代码。例如，您可以在 http://unicode-table.com/en/25BC/ 处找到向下三角形的值。

请注意，这些方法仅适用于每个浏览器中默认可用的图标。对于像☃、❄、★、☂、☭、⎗或⎘这样的符号，这种情况的可能性要小得多。虽然可以为其他 UNICODE 符号提供跨浏览器支持，但过程有点复杂。

如果您想知道如何添加对不太常见的 UNICODE 字符的支持，请参阅 Create webfont with Unicode Supplementary Multilingual Plane symbols 了解有关如何执行此操作的详细信息。

背景图片

一个完全不同的策略是使用背景图像而不是字体。为获得最佳性能，最好通过基本编码将图像嵌入到您的 CSS 文件中，如例如所提到的。 @weasel5i2 和 @Obsidian。我会推荐使用 SVG 而不是 GIF，但是，这对性能和符号的清晰度都更好。

https://i.stack.imgur.com/5wLDq.gif

/* size: 0.9kb */
url(data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz48IURPQ1RZUEUgc3ZnIFBVQkxJQyAiLS8vVzNDLy9EVEQgU1ZHIDEuMS8vRU4iICJodHRwOi8vd3d3LnczLm9yZy9HcmFwaGljcy9TVkcvMS4xL0RURC9zdmcxMS5kdGQiPjxzdmcgdmVyc2lvbj0iMS4xIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHhtbG5zOnhsaW5rPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rIiB3aWR0aD0iMTYiIGhlaWdodD0iMjgiIHZpZXdCb3g9IjAgMCAxNiAyOCI+PGcgaWQ9Imljb21vb24taWdub3JlIj48L2c+PHBhdGggZD0iTTE2IDE3cTAgMC40MDYtMC4yOTcgMC43MDNsLTcgN3EtMC4yOTcgMC4yOTctMC43MDMgMC4yOTd0LTAuNzAzLTAuMjk3bC03LTdxLTAuMjk3LTAuMjk3LTAuMjk3LTAuNzAzdDAuMjk3LTAuNzAzIDAuNzAzLTAuMjk3aDE0cTAuNDA2IDAgMC43MDMgMC4yOTd0MC4yOTcgMC43MDN6TTE2IDExcTAgMC40MDYtMC4yOTcgMC43MDN0LTAuNzAzIDAuMjk3aC0xNHEtMC40MDYgMC0wLjcwMy0wLjI5N3QtMC4yOTctMC43MDMgMC4yOTctMC43MDNsNy03cTAuMjk3LTAuMjk3IDAuNzAzLTAuMjk3dDAuNzAzIDAuMjk3bDcgN3EwLjI5NyAwLjI5NyAwLjI5NyAwLjcwM3oiIGZpbGw9IiMwMDAwMDAiPjwvcGF0aD48L3N2Zz4=

何时使用背景图像或字体

对于许多用例，基于 SVG 的背景图像和图标字体在性能和灵活性方面基本相同。要决定选择哪个，请考虑以下差异：

SVG 图像

它们可以有多种颜色

他们可以嵌入自己的 CSS 和/或由 HTML 文档设置样式

它们可以作为单独的文件加载，嵌入 CSS 和嵌入 HTML

每个符号都由 XML 代码或 base64 代码表示。您不能直接在代码编辑器中使用该字符或使用 HTML 实体

当 XML 代码嵌入 HTML 中时，多次使用同一符号意味着重复该符号。将文件嵌入 CSS 或作为单独文件加载时不需要复制

您不能使用颜色、字体大小、行高、背景颜色或其他与字体相关的样式规则来更改图标的显示，但您可以将图标的不同组件单独引用为形状。

您需要一些 SVG 和/或 base64 编码的知识

在旧版本的 IE 中有限或不支持

图标字体

一个图标只能有一种填充颜色、一种背景颜色等。

图标可以嵌入在 CSS 或 HTML 中。在 HTML 中，您可以直接使用字符或使用 HTML 实体来表示它。

有些符号可以在不使用网络字体的情况下显示。大多数符号不能。

当您的字符嵌入 HTML 中时，多次使用相同的符号意味着重复该符号。在 CSS 中嵌入文件时不需要复制。

您可以使用颜色、字体大小、行高、背景颜色或其他与字体相关的样式规则来更改图标的显示

您不需要特殊的技术知识

支持所有主流浏览器，包括旧版 IE

就个人而言，我建议仅当您需要多种颜色并且这些颜色无法通过 color、background-color 和其他与颜色相关的字体 CSS 规则来实现时才使用背景图像。

使用 SVG 图像的主要好处是您可以为符号的不同组件赋予自己的样式。如果将 SVG XML 代码嵌入 HTML 文档中，这与 HTML 样式非常相似。但是，这会导致网页同时使用 HTML 标签和 SVG 标签，这会显着降低网页的可读性。如果符号在多个页面中重复，它还会增加额外的膨胀，并且您需要考虑旧版本的 IE 对 SVG 没有或有限的支持。

通常，最好是在他的上下文中看到一个角色。

这是 Unicode 字符的完整列表，以及您的浏览器当前如何显示它们。我看到这个列表不断发展，浏览器版本在其他版本之后。

该列表是通过 html 实体 unicode 表的十进制迭代获得的，可能需要几秒钟，但在很多情况下对我非常有用。

通过快速悬停给定的字符，您将获得 dec 和 hex 以及使用键盘生成它的快捷方式。

var i = 0 do document.write(""+"&#"+i+";"),i++ while (i<136690) window.stop() // 来自 https://codepen.io/Nico_KraZhtest/pen/mWzXqy

与书签相同的片段：

javascript:void%20!function(){var%20t=0;do{document.write(%22%3Ca%20title='(Linux|Hex):%20[CTRL+SHIFT]+u%22+t.toString(16)+%22\nHtml%20entity:%20%26%23%20%22+t+%22;\n%26%23x%22+t.toString(16)+%22;\n(Win|Dec):%20[ALT]+%22+t+%22'%20onmouseover='this.focus()'%20onclick='this.href=\%22https://google.com/%3Fq=\%22+this.innerHTML'%20style='cursor:pointer'%20target='new'%3E%26%23%22+t+%22;%3C/a%3E%22),t++}while(t%3C136690);window.stop()}();

要从 php 生成该列表：

for ($x = 0; $x < 136690; $x++) {
  echo html_entity_decode('&#'.$x.';',ENT_NOQUOTES,'UTF-8');
}

使用 php 将该列表生成到控制台中：

php -r 'for ($x = 0; $x < 136690; $x++) { echo html_entity_decode("&#".$x.";",ENT_NOQUOTES,"UTF-8");}'

这是一个纯文本提取的箭头，其中一些带有 unicode 10.0。 http://unicode.org/versions/Unicode10.0.0/

Unicode 10.0 增加了 8,518 个字符，总共 136,690 个字符。

🔙🔚🔛🔜🔝🖗🖘🖙🖚🖛🖜🖝🖞🖟🞀🞁🞂🞃🔺🔻🔼🔽𝆒𝆓𐃘⭝⭞⭟⭠⭡⭢⭣⭤⭥⭦⭧⭨⭩⭪⭫⭬⭭⭮⭯⭰⭱⭲⭳⭶⭷ ⭸⭹⭺⭻⭼⭽⭾⭿⮀⮁⮂⮃⮄⮅⮆⮇⮈⮉⮊⮋⮌⮍⮎⮏⮐⮑⮒⮓⮔⮕⮘⮙⮚⮛⮜⮝⮞⮟⮠⮡⮢⮣⮤⮥⮦⮧⮨⮩⮪⮫ ⮬⮭⮮⮯⮰⮱⮲⮳⮴⮵⮶⮷⮸⮹⮽⮾⮿⯀⯁⯂⯅⯆⯇⯈⬶⬷⬸⬹⬺⬻⬼⬽⬾⬀⬁⬂⬃⬄⬅⬆⬇⬈⬉⬊⬋⬌⬍⬎⬏⬐ ⬑⤀⤁⤂⤃⤄⤅⤆⤇⤈⤉⤊⤋⤌⤍⤎⤏⤐⤑⤒⤓⤔⤕⤖⤗⤘⤙⤚⤛⤜⤝⤞⤟⤠⤡⤢⤣⤤⤥⤦⤧⤨⤩⤪⤫⤬⤭⤮⤯⤰ ⤱⤲⤳⤴⤵⤶⤷⤸⤹⤺⤻⤼⤽⤾⤿⥀⥁⥂⥃⥄⥅⥆⥇⥈⥉⥊⥋⥌⥍⥎⥏⥐⥑⥒⥓⥔⥕⥖⥗⥘⥙⥚⥛⥜⥝⥞⥟⥠⥡⥢ ⥣⥤⥥⥦⥧⥨⥩⥪⥫⥬⥭⥮⥯⥰⥱⥲⥳⥴⥵⟨⟩⟪⟫⟬⟭⟮⟯⟰⟱⟲⟳⟴⟵⟶⟷⟸⟹⟺⟻⟼⟽⟾⟿➘➙➚➛➜➝➞ ➟➠➡➢➣➤➥➦➧➨➩➪➫➬➭➮➯➰➱➲➳➴➵➶➷➸➹➺➻➼➽➾⊲⊳⊴⊵←↑→↓↔↕ↆ↛↗↘↙↙➵ ↞↟↠↡↢↣↤↥↦↧↨↩↪↫↬↭↮↯↰↱↲↳↴ ⇐⇑⇒d 🞁🞂🞃🠀🠁🠂🠃🠄🠅🠆🠇🠈🠉🠊🠋🠐🠑🠒🠓🠔🠕🠖🠗🠘🠙🠚🠛🠜🠝🠞🠟🠠🠡🠢🠣🠤🠥🠦🠧🠨🠩🠪🠫🠬🠭🠮🠯🠰🠱🠲 🠳🠴🠵🠶🠷🠸🠹🠺🠻🠼🠽🠾🠿🡀🡁🡂🡃🡄🡅🡆🡇🡐🡑🡒🡓🡔🡕🡖🡗🡘🡙🡠🡡🡢🡣🡤🡥🡦🡧🡨🡩🡪🡫🡬🡭🡮🡯🡰🡱🡲 🡳🡴🡵🡶🡷🡸🡹🡺🡻🡼🡽🡾🡿🢀🢁🢂🢃🢄🢅🢆🢇🢐🢑🢒🢓🢔🢕🢖🢗🢘🢙🢚🢛🢜🢝🢞🢟🢠🢡🢢🢣🢤🢥🢦🢧🢨🢩🢪🢫

嘿，您是否注意到普通的 html <details> 元素有一个下拉箭头？这有时就是我们所需要的。

“不是 ASCII（两者都没有 ↑/↓）”需要限定。

虽然这些字符在 American Standard Code for Information Interchange 中未定义为字形，但它们的代码通常用于为 ASCII 代码 24 和 25（十六进制 18 和 19，CANcel 和 EM：End of Medium）提供图形表示。 Code page 437（IBM 称为扩展 ASCII，包括数字代码 128 到 255）将这些字形定义为 ASCII 代码的使用，并且这些约定的普遍性渗透到整个行业，正如 HP 等领先公司将其部署为标准所看到的那样，尤其是打印机，IBM，尤其是从原始 PC 开始的微型计算机。

正如 CAN 和 EM 的 ASCII 代码在当时相对过时一样，证明它们作为字形的使用是合理的，随着时间的推移，当前使用的 UNICODE 约定也使得将代码用作字形已经过时了。

需要强调的是，IBM 在 Extended ASCII 中对 ASCII 的扩展，不仅包括数字代码 128 到 255 的更大数字集，而且还扩展了 ASCII 范围 0 到 32 中的一些数字控制代码的使用，从只是媒体传输控制协议包括字形。人们经常错误地假设前 0 到 128 没有“扩展”，并且 IBM 在这个范围内使用了传统 ASCII 的字形。此错误也出现在以前的参考文献之一中。这个错误变得如此普遍，以至于它潜意识地重新定义了 ASCII。

我知道我迟到了，但你也可以用纯 CSS 来完成这个：

HTML：

（它可以是任何 HTML 元素，例如，如果您使用像 <span> 这样的内联元素，请确保使用 display:block; 或 display:inline-block 使其成为块/内联块元素）：

.up {
   height:0;
   width:0;
   border-top:100px solid black;
   border-left:100px solid transparent;
   transform:rotate(-45deg);   
  }

.down {
   height:0;
   width:0;
   border-bottom:100px solid black;
   border-right:100px solid transparent;
   transform:rotate(-45deg); 
  }