Censor function

censor.js

/*
Challenge:
  Create a function censor that accepts no arguments. censor will return a function that will accept either two strings, or one string. When two strings are given, the returned function will hold onto the two strings as a pair, for future use. When one string is given, the returned function will return the same string, except all instances of a first string (of a saved pair) will be replaced with the second string (of a saved pair).
*/
// 1. Declare a function named censor with no parameter.
//	1-1. Declare a backpack variable named censorObject, and assign it an empty object.
//	1-2. Declare a function named getCensor with two parameters: a string named str1, a string named str2.
//		1-2-1. use if statement to check if str2 is not undefined. If so, set censorObject's key to str1, and its value to str2.
//		1-2-2. Else, iterate through censorObject using for...in looop
//			1-2-2-1. Check if any of keys' strings found on str1's string. If so, replace the string with the value associated with key using regex and String.replace method.
//			1-2-2-2. Return str1.
//	1-3. Return getCensor.

function censor() {
  let censorObject = {};
  console.log("how does this code works?!");
  function getCensor(str1, str2) {
    console.log(censorObject);
    if (typeof str2 === "string") {
      censorObject[str1] = str2;
    } else {
      for (let key in censorObject) {
        const reg = new RegExp("Hello");
        console.log(reg);
        str1 = str1.replace(reg, censorObject[key]);
      }
      return str1;
    }
  }
  return getCensor;
}

// Uncomment these to check your work!
const changeScene = censor();
changeScene("dogs", "cats");
changeScene("quick", "slow");
console.log(changeScene("The quick, brown fox jumps over the lazy dogs.")); // should log: 'The slow, brown fox jumps over the lazy cats.'