由于安全方面的考虑，chrome等现代浏览器不支持调用，因为它可能使恶意的js脚本从你的剪贴板读取敏感数据（例如密码等）
但是除了ie，其他三家都是支持copy与cut的操作的。
这是copy与cut的代码
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
</head>
<body>
<p>
<textarea id="textarea">Hello, world!</textarea>
</p>
<p>
<button id="copy">复制内容</button> <button id="cut">剪切内容</button>
</p>
<script>
var selectAndCopy = function() {
// Select text
var cutTextarea = document.querySelector('#textarea');
cutTextarea.select();
// Execute copy
var successful = document.execCommand('copy');
var msg = successful ? 'successful': 'unsuccessful';
console.log('Cutting text command was ' + msg);
};
var copyButton = document.querySelector('#copy');
copyButton.addEventListener('click', function(event) {
selectAndCopy();
});
var cutButton = document.querySelector('#cut');
cutButton.addEventListener('click', function(event) {
Cut();
});
var Cut = function() {
var cutTextarea = document.querySelector('#textarea');
cutTextarea.select();
// Execute copy
var successful = document.execCommand('cut');
var msg = successful ? 'successful': 'unsuccessful';
console.log('paste text command was ' + msg);
}
</script>
</body>
</html>
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