javascript - Write a function that takes a list of values and returns a dictionary -

write function takes list of values , returns dictionary in format below

sample input: [“book”, 3, “pin”, 3.5] sample output { string :[“book”, “pin”], number:[3,5] } */ 

above code challenge question , dont know start understand dictionary key/value js fucnction.. have tried following

var dict = []; // create empty array  dict.push({     string:   ["book" , "pin"] , number: [3 , 4] }); // repeat last part needed add more key/value pairs console.log(dict)..  

it displays output need im not sure process correct

something this?

var list = ["book", 3, "pin", 4];  function toobject(arr){      var dict = {         string: [],         number: []     };      for( var = 0; < arr.length; i++ ){          if( typeof arr[i] === "string"){             dict.string.push(arr[i]);         } else {             dict.number.push(arr[i]);         }      }      return dict;  }  toobject(list);