Define a method named orderOfAppearance() that takes the name of a role as an argument and returns that role's order of appearance. If the role is not found, the method returns 0. Ex: orderOfAppearance("Elizabeth Swann") returns 3. Hint: A method may access the object's properties using the keyword this. Ex: this.title accesses the object's title property. // Code will be tested with different roles and movies let movie = {     title: "Pirates of the Caribbean: At World's End",    director: "Gore Verbinski",    composer: "Hans Zimmer",    roles: [ // Roles are stored in order of appearance       "Jack Sparrow",       "Will Turner",       "Elizabeth Swann",       "Hector Barbossa"    ],    orderOfAppearance: function(role) {    } };

Zybooks SDEV 255 2.1.1 Objects 

Define a method named orderOfAppearance() that takes the name of a role as an argument and returns that role's order of appearance. If the role is not found, the method returns 0. Ex: orderOfAppearance("Elizabeth Swann") returns 3. Hint: A method may access the object's properties using the keyword this. Ex: this.title accesses the object's title property.

// Code will be tested with different roles and movies
let movie = { 
   title: "Pirates of the Caribbean: At World's End",
   director: "Gore Verbinski",
   composer: "Hans Zimmer",
   roles: [ // Roles are stored in order of appearance
      "Jack Sparrow",
      "Will Turner",
      "Elizabeth Swann",
      "Hector Barbossa"
   ],
   orderOfAppearance: function(role) {

   }
};

There is a Lord of the rings test that tests orderOfAppearance for "Saruman" but it is not shown.

Heres my current code i tried

if(role!==this.orderOfAppearance[role])
         return "3";
      
      
   else
      return this.orderOfAppearance[role]

return "0";