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<!DOCTYPE html> <html> <body> <p>点击按钮查看 onclick 事件是否为冒泡事件。</p> <button onclick="myFunction(event)">试一试</button> <p id="demo"></p> <script> function myFunction(event) { var x = event.bubbles; document.getElementById("demo").innerHTML = x; } </script> </body> </html>