Mobile Webapps Alerting Users

Is there anyway to have an audible alert on an android/iphone webapp? Would like to alert the 开发者_开发问答user when an event occurs.

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On android, you can execute java code from javascript, but you need to run your webapp in a WebView.

If your webapp runs in a bare browser, you could also check for the html5 audio api, might do the trick.