JavaScript: Check whether the provided argument is a valid JSON
JavaScript fundamental (ES6 Syntax): Exercise-183 with Solution
Write a JavaScript program to check if the provided argument is valid JSON.
- Use JSON.parse() and a try... catch block to check if the provided string is a valid JSON.
Sample Solution:
JavaScript Code:
//#Source https://bit.ly/2neWfJ2
const isValidJSON = obj => {
try {
JSON.parse(obj);
return true;
} catch (e) {
return false;
}
};
console.log(isValidJSON('{"name":"Adam","age":20}'));
console.log(isValidJSON('{"name":"Adam",age:"20"}'));
console.log(isValidJSON(null));
Sample Output:
true false true
Flowchart:

Live Demo:
See the Pen javascript-basic-exercise-183-1 by w3resource (@w3resource) on CodePen.
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