Another method for passing object parameters to methods in JavaScript

Method functions:

Function sendMessage (sMsg, oObj ){
If (arguments. length = 2 ){
OObj. handleMsg (sMsg );
OObj. test ();
} Else {
Alert (sMsg );
};
}

SendMessage ("Hello world! ");

Common method transfer:

Function obj (){
}

Obj. prototype. handleMsg = function (sMsg ){
Alert ("This is a custom message:" + sMsg );
};
Obj. prototype. test = function (){
Alert ("test ");
};

SendMessage ("asdfsdasdfdfa", new obj );

Another method:

// Two parameters are input here, and the second is an object.
// This object has a method handleMsg ()
SendMessage ("How are you? ",{
HandleMsg: function (sMsg ){
Alert ("This is a custom message:" + sMsg );
},
Test: function (){
Alert ("test ");
}
});
I am not very familiar with the transfer of such methods, but I can.