不要工作后退听众

Question

为什么不使用EventListener？

<script>
        document.addEventListener("deviceready", onDeviceReady, false);

        function onDeviceReady() {
            alert1("A", "B");
        }

        document.addEventListener("backbutton", onBackKeyDown, false);

        function onBackKeyDown() {
            alert("A");
        }
</script>

我按下我的手机按钮，不要浮动警报。并且，控制台日志是

cordova.js:967 Uncaught Error: Java exception was raised during method invocation
at pollOnce (file:///android_asset/www/cordova.js:967:40)
at pollOnceFromOnlineEvent (file:///android_asset/www/cordova.js:958:5)
cordova.js:967 Uncaught Error: Java exception was raised during method invocation
at pollOnce (file:///android_asset/www/cordova.js:967:40)
at pollOnceFromOnlineEvent (file:///android_asset/www/cordova.js:958:5)

我该如何解决？