const fs = require('fs');
fs.writeFile('./data.txt','\nNodeJS学习',{flag:'a'},err=>{ // 异入写入
if(err){
console.log('写入失败')
}
console.log('写入成功')
})
console.log(1+1)
const fs = require('fs');
fs.writeFile('./data.txt','\nNodeJS学习',{flag:'a'},err=>{ // 异入写入
if(err){
console.log('写入失败')
}
console.log('写入成功')
})
console.log(1+1)
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