Prompt with Slash Commands
Type a slash to open a command menu. Use the arrow keys to move, Enter to pick, and Escape to close.
One HTML file with the CSS and JavaScript inside. No library needed. MIT license.
How to use it
- Click Copy the code, or download the file.
- Paste the CSS into your stylesheet, the HTML where you want the component, and the script before the closing body tag.
- Change
--accentat the top of the CSS to your brand color, then connect the events to your AI service.
What you get
- Works in light and dark mode automatically
- Keyboard friendly, with labels for screen readers
- Fits phones, tablets and desktops
- Respects the reduced motion setting
- No framework, so it works with any stack
The code
<!DOCTYPE html>
<!--
Prompt with Slash Commands: a free AI UI component
From 100 Free AI UI Components by MM Rahman Bappi, MIT license
https://mmrahmanbappi.github.io/100-free-ai-ui-components/
How to use: copy the CSS, HTML and JavaScript below into your page.
Colors are CSS variables at the top. Change --accent to match your brand.
Light and dark themes follow the visitor's system setting, or set
data-theme="dark" or data-theme="light" on the html element.
-->
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Prompt with Slash Commands | Free AI UI Component</title>
<meta name="description" content="Type a slash to open a command menu. Use the arrow keys to move, Enter to pick, and Escape to close.">
<meta name="robots" content="noindex, follow">
<style>
:root{
--accent:#5b5bd6; --accent-ink:#fff; --accent-soft:#ececfc;
--bg:#f7f7f8; --surface:#fff; --surface-2:#f1f1f4; --ink:#17171c; --text:#3a3a44; --muted:#6c6c78;
--line:#e3e3e8; --good:#15803d; --warn:#b45309; --bad:#c62828;
--radius:14px; --shadow:0 1px 2px rgba(20,20,30,.06),0 8px 24px -12px rgba(20,20,30,.18);
--font:system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,sans-serif; --mono:ui-monospace,"Cascadia Code",Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){
--accent:#8b8bff; --accent-ink:#0f0f16; --accent-soft:#25254a;
--bg:#0f0f13; --surface:#18181f; --surface-2:#212129; --ink:#f3f3f6; --text:#d4d4dc; --muted:#9a9aa8;
--line:#2c2c36; --good:#4ade80; --warn:#fbbf24; --bad:#f87171; --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -12px rgba(0,0,0,.6);
}}
:root[data-theme=dark]{
--accent:#8b8bff; --accent-ink:#0f0f16; --accent-soft:#25254a;
--bg:#0f0f13; --surface:#18181f; --surface-2:#212129; --ink:#f3f3f6; --text:#d4d4dc; --muted:#9a9aa8;
--line:#2c2c36; --good:#4ade80; --warn:#fbbf24; --bad:#f87171; --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -12px rgba(0,0,0,.6);
}
*{box-sizing:border-box}
html,body{margin:0}
body{min-height:100vh;display:grid;grid-template-columns:minmax(0,1fr);place-items:center;padding:24px;background:var(--bg);color:var(--text);font:15px/1.5 var(--font);-webkit-font-smoothing:antialiased}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition:none!important}}
/* ---- component ---- */
.pb{width:min(100%,680px);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:10px 10px 10px 14px;transition:border-color .15s}
.pb:focus-within{border-color:var(--accent)}
.pb textarea{width:100%;border:0;outline:0;resize:none;background:none;min-height:24px;max-height:200px;line-height:1.5;padding:6px 0;color:var(--ink)}
.pb textarea::placeholder{color:var(--muted)}
.row{display:flex;align-items:center;gap:8px;min-width:0}
.row>span{min-width:0}
.sp{flex:1}
.ib{width:36px;height:36px;display:grid;place-items:center;border-radius:10px;border:0;background:none;color:var(--muted);cursor:pointer}
.ib:hover{background:var(--surface-2);color:var(--ink)}
.send{width:36px;height:36px;display:grid;place-items:center;border-radius:10px;border:0;background:var(--accent);color:var(--accent-ink);cursor:pointer;transition:opacity .15s,transform .1s}
.send:disabled{opacity:.35;cursor:not-allowed}
.send:not(:disabled):active{transform:scale(.94)}
.log{width:min(100%,680px);margin-bottom:12px;display:flex;flex-direction:column;gap:8px}
.msg{align-self:flex-end;max-width:85%;background:var(--accent-soft);color:var(--ink);padding:9px 13px;border-radius:14px 14px 4px 14px;white-space:pre-wrap;word-wrap:break-word;animation:pop .2s ease}
@keyframes pop{from{opacity:0;transform:translateY(6px)}}
.wrap{width:min(100%,680px);display:flex;flex-direction:column;align-items:stretch}
.pb{position:relative}
.menu{position:absolute;left:10px;right:10px;bottom:calc(100% + 8px);background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:6px;list-style:none;margin:0;max-height:min(210px,40vh);overflow:auto}
.menu[hidden]{display:none}
.menu li{display:flex;gap:10px;align-items:baseline;padding:8px 10px;border-radius:8px;cursor:pointer}
.menu li b{color:var(--ink);font-family:var(--mono);font-size:13px;min-width:92px}
.menu li span{color:var(--muted);font-size:13px}
.menu li[aria-selected=true]{background:var(--accent-soft)}
.menu .empty{color:var(--muted);font-size:13px;cursor:default}
.hint{font-size:12px;color:var(--muted)}
.hint kbd{font-family:var(--mono);background:var(--surface-2);border:1px solid var(--line);border-radius:5px;padding:0 5px}
</style>
</head>
<body>
<div class="wrap">
<form class="pb" id="f">
<ul class="menu" id="menu" role="listbox" aria-label="Commands" hidden></ul>
<label class="sr" for="q">Message</label>
<textarea id="q" rows="1" placeholder="Type / for commands" role="combobox" aria-controls="menu" aria-expanded="false" aria-autocomplete="list"></textarea>
<div class="row"><span class="hint">Press <kbd>/</kbd> for commands</span><span class="sp"></span><button class="send" id="s" type="submit" aria-label="Send message" disabled><svg viewBox="0 0 24 24" width="18" height="18" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M12 19V5M5 12l7-7 7 7"/></svg></button></div>
</form>
</div>
<script>
// Demo helper: add ?theme=dark or ?theme=light to the address to preview a theme.
(function(){var t=new URLSearchParams(location.search).get('theme');if(t)document.documentElement.dataset.theme=t;})();
function grow(t){t.style.height='auto';t.style.height=Math.min(t.scrollHeight,200)+'px'}
function post(log,text){var m=document.createElement('div');m.className='msg';m.textContent=text;log.appendChild(m);}
var CMDS=[['/summarize','Make a short summary'],['/translate','Translate to another language'],['/explain','Explain in simple words'],['/rewrite','Rewrite in a different tone'],['/table','Turn the answer into a table'],['/code','Answer with code only'],['/shorter','Make it shorter']];
var q=document.getElementById('q'),menu=document.getElementById('menu'),s=document.getElementById('s'),sel=0,shown=[];
function word(){var v=q.value.slice(0,q.selectionStart);var m=v.match(/(^|\s)(\/\w*)$/);return m?m[2]:null;}
function render(){var w=word();if(w===null){menu.hidden=true;q.setAttribute('aria-expanded','false');return;}
shown=CMDS.filter(function(c){return c[0].indexOf(w.toLowerCase())===0;});sel=Math.min(sel,Math.max(shown.length-1,0));menu.innerHTML='';
if(!shown.length){menu.innerHTML='<li class="empty">No matching command</li>';}
shown.forEach(function(c,i){var li=document.createElement('li');li.setAttribute('role','option');li.id='o'+i;li.setAttribute('aria-selected',i===sel);
li.innerHTML='<b></b><span></span>';li.querySelector('b').textContent=c[0];li.querySelector('span').textContent=c[1];
li.onmousedown=function(e){e.preventDefault();pick(i);};menu.appendChild(li);});
menu.hidden=false;q.setAttribute('aria-expanded','true');if(shown.length)q.setAttribute('aria-activedescendant','o'+sel);}
function pick(i){var c=shown[i];if(!c)return;var pos=q.selectionStart,before=q.value.slice(0,pos).replace(/\/\w*$/,c[0]+' ');q.value=before+q.value.slice(pos);q.selectionStart=q.selectionEnd=before.length;menu.hidden=true;q.setAttribute('aria-expanded','false');grow(q);s.disabled=!q.value.trim();q.focus();}
q.addEventListener('input',function(){sel=0;grow(q);s.disabled=!q.value.trim();render();});
q.addEventListener('keydown',function(e){if(!menu.hidden&&shown.length){
if(e.key==='ArrowDown'){e.preventDefault();sel=(sel+1)%shown.length;render();return;}
if(e.key==='ArrowUp'){e.preventDefault();sel=(sel-1+shown.length)%shown.length;render();return;}
if(e.key==='Enter'||e.key==='Tab'){e.preventDefault();pick(sel);return;}}
if(e.key==='Escape'){menu.hidden=true;q.setAttribute('aria-expanded','false');}});
q.addEventListener('blur',function(){menu.hidden=true;});
document.getElementById('f').addEventListener('submit',function(e){e.preventDefault();q.value='';grow(q);s.disabled=true;});
</script>
</body>
</html>
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