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<!DOCTYPE html>

<html lang=en>

<head>

  <meta charset=UTF-8>

  <meta name=viewport content="width=device-width,initial-scale=1">

  <title>oncopy — vs oncut</title>

  <style>body{font-family:system-ui,sans-serif;margin:0;padding:1.5rem;background:#f8fafc;color:#334155;line-height:1.7}h1{margin:0 0 .75rem;font-size:1.25rem;color:#0f172a}textarea{width:100%;max-width:420px;min-height:80px;padding:.65rem;font:inherit;border:1px solid #cbd5e1;border-radius:6px}ul{margin:1rem 0 0;padding-left:1.25rem;font-size:.8125rem;max-width:420px}li{margin-bottom:.35rem}.copy{color:#1d4ed8;font-weight:600}.cut{color:#b45309;font-weight:600}</style>

</head>

<body>

  <h1>copy vs cut</h1>

  <p>Select text, then copy (Ctrl+C) or cut (Ctrl+X).</p>

  <textarea id=field>Edit this text. Select part of it, then copy or cut.</textarea>

  <ul id=log></ul>



  <script>var field=document.getElementById("field"),log=document.getElementById("log");function add(e,d){var t=document.createElement("li");d&&(t.className=d),t.textContent=e,log.appendChild(t),log.children.length>6&&log.removeChild(log.firstChild)}field.addEventListener("copy",(function(){add("copy — duplicated to clipboard","copy")})),field.addEventListener("cut",(function(){add("cut — removed from field after copy","cut")}))</script>

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HTML oncopy Attribute — vs oncut