Skip to main content

isValidJSON

TS JS Deno

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.

typescript
const isValidJSON = (str) => {
try {
JSON.parse(str);
return true;
} catch (e) {
return false;
}
};
typescript
isValidJSON('{"name":"Adam","age":20}'); // true
isValidJSON('{"name":"Adam",age:"20"}'); // false
isValidJSON(null); // true