30-seconds-of-code/snippets/js/s/is-valid-json.md

title, type, language, tags, cover, dateModified

title	type	language	tags	cover	dateModified
String is valid JSON	snippet	javascript	type	italian-horizon	2020-10-18T13:49:49+03:00

Checks if the provided string is a valid JSON.

• Use JSON.parse() and a try...catch block to check if the provided string is a valid JSON.

const isValidJSON = str => {
  try {
    JSON.parse(str);
    return true;
  } catch (e) {
    return false;
  }
};

isValidJSON('{"name":"Adam","age":20}'); // true
isValidJSON('{"name":"Adam",age:"20"}'); // false
isValidJSON(null); // true