当用户剪切元素的文本时，oncut属性将在HTML中触发。
您可以尝试运行以下代码来实现oncut属性-
<!DOCTYPE html>
<html>
<body>
<input type = "text" oncut = "display()" value = "Cut me">
<h2 id = "test">Try to cut the above text.</h2>
<script>
function display() {
document.getElementById("test").innerHTML = "您的剪切文字有效！";
}
</script>
</body>
</html>