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<input type="text" id="autoInput" value="Focus করলে auto copy হবে">

<script>
document.getElementById("autoInput").addEventListener("focus", () => {
  const text = document.getElementById("autoInput");
  
  if (navigator.clipboard) {
    navigator.clipboard.writeText(text.value)
      .then(() => console.log("Auto copied!"));
  } else {
    text.select();
    document.execCommand("copy");
    console.log("Fallback: execCommand used.");
  }
});
</script>

<button onclick="livePaste()">Live Paste</button>
<div id="livePreview" style="margin-top:10px; border:1px dashed #1565c0; padding:10px;"></div>

<script>
function livePaste() {
  if (navigator.clipboard) {
    navigator.clipboard.readText()
      .then(text => {
        document.getElementById("livePreview").innerText = text;
      })
      .catch(err => {
        alert("Clipboard read error: " + err);
      });
  } else {
    alert("Clipboard API unsupported.");
  }
}
</script>