JavaScript change the object into a string

I've been working on code to convert strings into dictionaries and arrays, and vice versa. While string to array and string to object conversions are successful, the reverse process is giving me trouble. I'm currently stuck and unsure of how to resolve the issue. The results of my testing have not been satisfactory.

function strToArray(string) {
  let array = [];
  for (var element of string) {
    array.push(element);
  }
  return array;
};

function strToObj(string) {
  let dict = {};
  for (let i = 0; i < string.length; i++) {
    let letter = string[i];
    if (dict[letter]) {
      dict[letter].push(i);
    } else {
      dict[letter] = [i];
    }
  }
  return dict;
};

function arrayToString(array) {
  let text = "";
  for (var element of array) {
    text = text + element;
  }
  return text;
};

function objToString(obj) {
  let text = "";
  for (var element in obj) {
    let value = obj[element];

  }
  return text;
};


const ArrayHello = strToArray('hello');
const ObjHello = strToObj('hello');
const HelloArray = arrayToString(ArrayHello);
const HelloObj = objToString(ObjHello);

console.log(ArrayHello);
console.log(ObjHello);
console.log(HelloArray);
console.log(HelloObj);

Answer №1

You have the option to utilize an array for creating the string and apply the arrayToString() method in order to easily obtain the answer as shown below:

function strToArray(string) {
  let array = [];
  for (var element of string) {
    array.push(element);
  }
  return array;
};

function strToObj(string) {
  let dict = {};
  for (let i = 0; i < string.length; i++) {
    let letter = string[i];
    if (dict[letter]) {
      dict[letter].push(i);
    } else {
      dict[letter] = [i];
    }
  }
  return dict;
};

function arrayToString(array) {
  let text = "";
  for (var element of array) {
    text = text + element;
  }
  return text;
};

function objToString(obj) {
  let text = [];
  
  for (let [key, index] of Object.entries(obj)) {
    for (let i of index) {
      text[i] = key;
    }
  }
  
  return arrayToString(text);
};


const ArrayHello = strToArray('hello');
const ObjHello = strToObj('hello');
const HelloArray = arrayToString(ArrayHello);
const HelloObj = objToString(ObjHello);

console.log(ArrayHello);
console.log(ObjHello);
console.log(HelloArray);
console.log(HelloObj);

UPDATE:

Another approach is using the Array.prototype.join method to accomplish the functionality similar to arrayToString with ease [MDN LINK]

const array = ['h', 'e', 'l', 'l', 'o'];

const arrayToString = (arr, delimiter = '') => arr.join(delimiter);

console.log(arrayToString(array));

Answer №2

An example of how to achieve something similar to the objToString function could be illustrated with the following code snippet:

function objToString(obj) {
  let str = "";
  let output = [];
  Object.entries(obj).forEach((entry) => {
    entry[1].forEach((index) => {
      output[index] = entry[0];
    });
  });
  str = output.join("");
  return str;
}

Answer №3

function convertStringToArray(inputString) {
  let outputArray = [];
  for (var element of inputString) {
    outputArray.push(element);
  }
  return outputArray;
};

function convertStringToObject(inputString) {
  let outputObj = {};
  for (let i = 0; i < inputString.length; i++) {
    let letter = inputString[i];
    if (outputObj[letter]) {
      outputObj[letter].push(i);
    } else {
      outputObj[letter] = [i];
    }
  }
  return outputObj;
};

function convertArrayToString(inputArray) {
  let text = "";
  for (var element of inputArray) {
    text = text + element;
  }
  return text;
};

function convertObjectToString(inputObj) {
  let text = "";
  
  for (var key in inputObj) {
   let value = inputObj[key];
   text+=value//+" ";// in Place of " " you can use any seprator
  }
  return text;
};


const helloArray = convertStringToArray('hello');
const helloObj = convertStringToObject('hello');
const arrayHello = convertArrayToString(helloArray);
const objHello = convertObjectToString(helloObj);

console.log(helloArray);
console.log(helloObj);
console.log(arrayHello);
console.log(objHello);

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