使用 node.js 导入 JSON 文件

Question

I want data from the config.json file import to the index.js file in the same dir.

so I had it before

const {
prefix, token
} = require('./config.json');

now i would change the string so i need a json object, but how?

Answer 1

1. In ES5 you can do it by

const object = require('./config.json');

The object will contain your JSON.

In ES6

import object from './config.json'

2. Using fs module synchronously

const fs = require('fs')
const jsonData = JSON.parse(fs.readFileSync('config.json', 'utf-8'))

Answer 2

If you want the whole object, simply use:

const config = require('./config.json');

Otherwise if you want the contents of config.json , you can simply use the fs module to read the file. More specifically fs.readFileSync if you want it to be synchronous.

Answer 3

Async example, if you're using ES6 modules:

import fs from 'fs/promises';

const {prefix, token} = JSON.parse(
  await fs.readFile('./config.json', 'utf-8')
);

See also:

• https://nodejs.org/api/fs.html#promises-api
• https://nodejs.org/api/packages.html#determining-module-system