How to convert object into string in javascript?

Question

I have a function that should take as an argument of the object and return a string

The code I wrote.

function check(obj) {
  return obj.toString();
}

Answer 1

If your object is like

const obj = { name: "John", age: 30, city: "New York" };

Use the JavaScript function JSON.stringify() to convert it into a string. Like this JSON.stringify(obj). then you will get this string:

"{"name":"John","age":30,"city":"New York"}"

Answer 2

let toString = ({name, age, language}) => `name: ${name}, age: ${age}, language: ${language}`;

const david = { name: 'David', age: 22, language: 'PHP' };

console.log(toString(david));

If you'd like to be more generic:

let toString = obj => Object.entries(obj).map(([k, v]) => `${k}: ${v}`).join(', ');

const david = { name: 'David', age: 22, language: 'PHP', favoriteFood: 'blue' };

console.log(toString(david));