accessing animation states from animator in javascript

Hi,

Like in the video tutorial for mecanim, I want to know which animation state is active. In the tutorial they are using a c# script, but since my other scripts are javascripts I'd like to keep it that way. I tried different ways to do it but none of them worked. Actually these lines should be converted:

 static int idleState = Animator.StringToHash("Base Layer.Idle");
 
 void FixedUpdate () {
 
     if(currentBaseState.nameHash == "idleState"){
          do things;
     }

thank you