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<pre>
<input type="text" id="copyInput" value="Copy this text">
<button onclick="document.getElementById('copyInput').select(); document.execCommand('copy'); alert('Text copied!');">Copy</button>
<script>
document.getElementById('copyInput').addEventListener('paste', function(event) {
alert('Pasted content: ' + event.clipboardData.getData('text'));
});
</script>
</pre>
</div>