const fs = require('fs'); fs.writeFile('./demo.txt', '即将要写入的内容', err => { if (err != null) { console.log(err); return; } console.log('文件内容写入成功'); })
const fs = require('fs'); fs.writeFile('./demo.txt', '即将要写入的内容', err => { if (err != null) { console.log(err); return; } console.log('文件内容写入成功'); })