Javascript Syntax Errors

hey, sorry for the bad programming, but I need some help fixing the syntax errors here:

 #pragma strict
 
 var map : GameObject;
 var onSound : AudioClip;
 var offSound : AudioClip;
 var canView : Boolean = false;
 var viewing : Boolean = false;
 
 function start ()
 {
     map.GetComponent(MeshRenderer).enabled = false;
     canView = false;
     viewing = false;
 }
 
 function OnTriggerCollider (Col : Collider)
 {
     if (Col.tag == "Player" && Input.GetKeyDown("e"))
     {
         canView = true;
         audio.PlayOneShot(onSound);
         destroy(gameObject);
 
     }
 }
 
 function Update ()
 {
     if (canView = true && Input.GetKeyDown("e"))
     {
         audio.PlayOneShot(onSound);
         map.GetComponet(MeshRenderer).enabled = true;
         viewing = true;
         
     }
     
     if (viewing = true && Input.GetKeyDown("e"))
     {
         audio.PlayOneShot(offSound);
         map.GetComponent(MeshRenderer).enabled = false;
         viewing = false;
     }
 }

here are some errors I got when I compiled my script:

Assets/My stuff/My scripts/ViewMap.js(29,21): BCE0044: expecting ), found '='.

Assets/My stuff/My scripts/ViewMap.js(29,52): BCE0043: Unexpected token: ).

Assets/My stuff/My scripts/ViewMap.js(37,21): BCE0044: expecting ), found '='.

Assets/My stuff/My scripts/ViewMap.js(37,52): BCE0043: Unexpected token: ).

sorry for knowing so little about scripting, I'll try to improve :)