30-seconds-of-code/snippets/isValidJSON.md

title, tags, firstSeen, lastUpdated

title	tags	firstSeen	lastUpdated
String is valid JSON	type,intermediate	2017-12-31T14:53:01+02:00	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