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最佳答案

There are various symbols which could be considered adequate replacements, including:

| | - two standard (bolded) vertical bars.
▋▋ - ▋ and another▋
▌▌ - ▌ and another▌
▍▍ - ▍ and another▍
▎▎ - ▎ and another▎
❚❚ - ❚ and another ❚

I may have missed out one or two, but I think these are the better ones. Here's a list of symbols just in case.

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There is no character encoded for use as a pause symbol, though various characters or combinations of characters may look more or less like a pause symbol, depending on font.

In a discussion in the public Unicode mailing list in 2005, a suggestion was made to use two copies of the U+275A HEAVY VERTICAL BAR character: ❚❚. But the adequacy of the result depends on font; for example, the glyph might have been designed so that the bars are too much apart. – The list discussion explains why a pause symbol had not been encoded, and this has not changed.

Thus, the best option is to use an image. If you need to use the symbol in text, it is best to create it in a suitably large size (say 60 by 60 pixels) and scale it down to text size with CSS (e.g., setting height: 0.8em on the img element).

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▐▐ is HTML and is made with this code: ▐▐.

Here's an example JSFiddle.

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I found it, it’s in the Miscellaneous Technical block. ⏸ (U+23F8)

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I'm using ▐ ▌

HTML: ▐ ▌

CSS: \2590\A0\258C

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Unicode Standard for Media Control Symbols

Pause: ⏸︎

The Unicode Standard 13.0 (update 2020) provides the Miscellaneous Technical glyphs in the HEX range 2300–23FF

Miscellaneous Technical

Given the extensive Unicode 13.0 documentation, some of the glyphs we can associate to common Media control symbols would be as following:

Keyboard and UI symbols

23CF ⏏︎ Eject media

User interface symbols

23E9 ⏩︎ fast forward
23EA ⏪︎ rewind, fast backwards
23EB ⏫︎ fast increase
23EC ⏬︎ fast decrease
23ED ⏭︎ skip to end, next
23EE ⏮︎ skip to start, previous
23EF ⏯︎ play/pause toggle
23F1 ⏱︎ stopwatch
23F2 ⏲︎ timer clock
23F3 ⏳︎ hourglass
23F4 ⏴︎ reverse, back
23F5 ⏵︎ forward, next, play
23F6 ⏶︎ increase
23F7 ⏷︎ decrease
23F8 ⏸︎ pause
23F9 ⏹︎ stop
23FA ⏺︎ record

Power symbols from ISO 7000:2012

23FB ⏻︎ standby/power
23FC ⏼︎ power on/off
23FD ⏽︎ power on
2B58 ⭘︎ power off

Power symbol from IEEE 1621-2004

23FE ⏾︎ power sleep

Use on the Web:

A file must be saved using UTF-8 encoding without BOM (which in most development environments is set by default) in order to instruct the parser how to transform the bytes into characters correctly. <meta charset="utf-8"/> should be used immediately after <head> in a HTML file, and make sure the correct HTTP headers Content-Type: text/html; charset=utf-8 are set.

Examples:

HTML

&#x23E9; Pictograph
&#x23E9;&#xFE0E; Standardized Variant

CSS

.icon-ff:before { content: "\23E9" }
.icon-ff--standard:before { content: "\23E9\FE0E" }

JavaScript

EL_iconFF.textContent = "\u23E9";
EL_iconFF_standard.textContent = "\u23E9\uFE0E"

Standardized variant

To prevent a glyph from being "color-emojified" ⏩︎ / ⏩ append the code U+FE0E Text Presentation Selector to request a Standardized variant: (example: ⏩︎)

Inconsistencies

Characters in the Unicode range are susceptible to the font-family environment they are used, application, browser, OS, platform.
When unknown or missing - we might see symbols like � or ▯ instead, or even inconsistent behavior due to differences in HTML parser implementations by different vendors.
For example, on Windows Chromium browsers the Standardized Variant suffix U+FE0E is buggy, and such symbols are still better accompanied by CSS i.e: font-family: "Segoe UI Symbol" to force that specific Font over the Colored Emoji (usually recognized as "Segoe UI Emoji") - which defies the purpose of U+FE0E in the first place - time will tell…

Scalable icon fonts

To circumvent problems related to unsupported characters - a viable solution is to use scalable icon font-sets like i.e:

Font Awesome

Player icons - scalable - font awesome

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
<i class="fa fa-arrows-alt"></i>
<i class="fa fa-backward"></i>
<i class="fa fa-compress"></i>
<i class="fa fa-eject"></i>
<i class="fa fa-expand"></i>
<i class="fa fa-fast-backward"></i>
<i class="fa fa-fast-forward"></i>
<i class="fa fa-forward"></i>
<i class="fa fa-pause"></i>
<i class="fa fa-play"></i>
<i class="fa fa-play-circle"></i>
<i class="fa fa-play-circle-o"></i>
<i class="fa fa-step-backward"></i>
<i class="fa fa-step-forward"></i>
<i class="fa fa-stop"></i>
<i class="fa fa-youtube-play"></i>

Google Icons

<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
<i class="material-icons">pause</i>
<i class="material-icons">pause_circle_filled</i>
<i class="material-icons">pause_circle_outline</i>
<i class="material-icons">fast_forward</i>
<i class="material-icons">fast_rewind</i>
<i class="material-icons">fiber_manual_record</i>
<i class="material-icons">play_arrow</i>
<i class="material-icons">play_circle_filled</i>
<i class="material-icons">play_circle_outline</i>
<i class="material-icons">skip_next</i>
<i class="material-icons">skip_previous</i>
<i class="material-icons">replay</i>
<i class="material-icons">repeat</i>
<i class="material-icons">stop</i>
<i class="material-icons">loop</i>
<i class="material-icons">mic</i>
<i class="material-icons">volume_up</i>
<i class="material-icons">volume_down</i>
<i class="material-icons">volume_mute</i>
<i class="material-icons">volume_off</i>

and many other you can find in the wild; and last but not least, this really useful online tool: font-icons generator, Icomoon.io.

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If you want one that's a single character to match the right-facing triangle for "play," try Roman numeral 2. Ⅱ is Ⅱ in HTML. If you can put formatting tags around it, it looks really good in bold. Ⅱ is <b>Ⅱ</b> in HTML. This has much better support than the previously mentioned double vertical bar.

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Following may come in handy:

⏩ ⏩
⏪ ⏪
⏫ ⓫
⏬ ⏬
⏭ ⏭
⏮ ⏮
⏯ ⏯
⏴ ⏴
⏵ ⏵
⏶ ⏶
⏷ ⏷
⏸ ⏸
⏹ ⏹
⏺ ⏺

NOTE: apparently, these characters aren't very well supported in popular fonts, so if you plan to use it on the web, be sure to pick a webfont that supports these.

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Modern browsers support 'DOUBLE VERTICAL BAR' (U+23F8), too:

http://www.fileformat.info/info/unicode/char/23f8/index.htm

For a music player it can act as a companion for 'BLACK RIGHT-POINTING POINTER' (U+25BA) because they both share equal width and height making it perfect for a play/pause button:

http://www.fileformat.info/info/unicode/char/25ba/index.htm

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The ISO 7000 / IEC 60417 Symbol for Pause; Interruption is #5111B. See Media_Controls

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I found a good option similar to the others but exact with the span tag. You can apply

<span>&#9616;</span>&#9616;

with no spaces.

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Simply II looks good! Other idea:

Pause II: just two capital letters i, ie. roman two (font dependent, needs sans serif)
Pause II: as before, but bold
Pause ll: two small letters L
Pause ||: two vertical bars
Pause ": quote
Pause ᐦ: 0x1426 Canadian syllabics final double short vertical strokes
Pause ‖: 0x2016 double vertical line*

Partly inspried by https://shapecatcher.com.

<div style="font-family: Roboto">
Pause II: just two capital letters i (font dependent, needs sans serif)<br>
Pause <b>II</b>: as before, but bold<br>
Pause ll: two small letters L<br>
Pause ||: two vertical bars<br>
Pause ": quote<br>
Pause &#x1426;: 0x1426 Canadian syllabics final double short vertical strokes<br>
Pause &#x2016;: 0x2016 double vertical line<br>
<div/>

音频和视频控制中的暂停符号的 HTML

Unicode Standard for Media Control Symbols

Pause: ⏸︎

Miscellaneous Technical

Keyboard and UI symbols

User interface symbols

Power symbols from ISO 7000:2012

Power symbol from IEEE 1621-2004