define('player',['videoplay'],function(videoplay){

    var wrap_player = $('#live_SWF'),

        obj_player = '';

    function v_switch(mtype,mid){

        if(obj_player){

            obj_player.destroy();

        }

        obj_player = videoplay(wrap_player,{

            type : mtype

        });

        obj_player.play(mid);

    }

    return function(){

        v_switch(VIDEOCONFIG.type,VIDEOCONFIG.vid); //return 放回结果就是一个方法

    }

});

M.use(['player'],function(player){ // function(player)这儿用的就是player的放回结果  实际上就是v_switch

player(); });

define('player',['videoplay'],function(videoplay){

    var wrap_player = $('#live_SWF'),

        obj_player = '';

    function v_switch(mtype,mid){

        if(obj_player){

            obj_player.destroy();

        }

        obj_player = videoplay(wrap_player,{

            type : mtype

        });

        obj_player.play(mid);

    }

    v_switch(VIDEOCONFIG.type,VIDEOCONFIG.vid); // 没有return 直接执行了

});

M.use(['player']); //也是执行的意思