26 lines
466 B
Markdown
26 lines
466 B
Markdown
---
|
|
title: isValidJSON
|
|
tags: type,json,intermediate
|
|
---
|
|
|
|
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.
|
|
|
|
```js
|
|
const isValidJSON = str => {
|
|
try {
|
|
JSON.parse(str);
|
|
return true;
|
|
} catch (e) {
|
|
return false;
|
|
}
|
|
};
|
|
```
|
|
|
|
```js
|
|
isValidJSON('{"name":"Adam","age":20}'); // true
|
|
isValidJSON('{"name":"Adam",age:"20"}'); // false
|
|
isValidJSON(null); // true
|
|
```
|