src/util/audio/audio.js
function(_key,_event){
            if (_event.state==0){
                _doClearAction(_key);
            }
            _doStateChangeCallback(_key,_event.state);
        }
function(_key,_event){
            if (_event.state==0){
                _doClearAction(_key);
            }
            _doStateChangeCallback(_key,_event.state);
        }
function ( _key , _event ) { if ( _event . state == 0 ) { _doClearAction ( _key ) ; } _doStateChangeCallback ( _key , _event . state ) ; }
state change action
state change action