How to transition between animations smoothly

Questions
5 
set_motion(_name){

    

    if (this.motion_name == _name){ return; }

    this.motion_name = _name;

    this.motion_time = Date.now();

  

    //get motion object

    var motion = this.get_motion_obj_from_name(this.motion_name);

  

    //get translate amount

    this.motion_translate = motion.translate;     

  

    //get clip

    var clip = motion.anim;

  

    //get action (animation)

    var action = this.mixer.clipAction( clip );

    console.log("action,");

    console.log(action);

    if(this.current_action){

      this.current_action.fadeOut(0.2);

    }

    //this.mixer.stopAllAction();

    action.reset();

    action.fadeIn(0.2);

    action.play();

    //action.time = 0.1; //hmm doesn't do anything

  

    this.current_action = action;

    console.log("Motion set to, "+this.motion_name);

  }

Yay, got it. I added fadeOut() and reset() and that fixed it.