isjson的简单介绍

isjson

IsJson is a simple Node.js module that helps you check if a string is a valid JSON or not. It is a lightweight and easy-to-use tool that can be integrated into your JavaScript projects.

## Installation

To install IsJson, you need to have Node.js installed on your machine. Then, open your terminal and run the following command:

```

npm install isjson

```

## Usage

After installing IsJson, you can use it in your projects by requiring it:

```javascript

const isJson = require('isjson');

```

### isJson(input)

The `isJson` function takes a string as an input and returns a boolean value indicating whether the string is a valid JSON or not. Here's how you can use it:

```javascript

const jsonString = '{"name": "John", "age": 25}';

const nonJsonString = 'Hello, world!';

console.log(isJson(jsonString)); // true

console.log(isJson(nonJsonString)); // false

```

In the above example, `isJson(jsonString)` returns `true` because the `jsonString` is a valid JSON. However, `isJson(nonJsonString)` returns `false` because `nonJsonString` is not a valid JSON.

## Conclusion

IsJson is a useful tool for developers who need to validate JSON strings in their Node.js projects. By using this lightweight module, you can easily check if a string is a valid JSON or not.