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<!DOCTYPE html> <html> <body> <p>此示例使用 addEventListener() 方法将两个单击事件添加到同一个按钮。 但是，stopImmediatePropagation() 方法<b>停止</b>第二个事件处理程序的执行。</p> <p><strong>注意：</strong> IE8 及更早版本不支持 stopImmediatePropagation() 方法。</p> <button id="myBtn">试一试</button> <script> function myFunction(event) { alert ("Hello World!"); event.stopImmediatePropagation(); // Try to remove me } function someOtherFunction() { alert ("I will not get to say Hello World"); } var x = document.getElementById("myBtn"); x.addEventListener("click", myFunction); x.addEventListener("click", someOtherFunction); </script> </body> </html>