let fs = require('fs');
fs.readFile('./a.txt',(err,data)=>{
if(err){
console.log(err);
}else{
console.log(data.toString());
}
})
fs.writeFile('b.txt','月薪2元',{flag:"a"},(err)=>{
if(err){
throw err
}
})
let fs = require('fs');
fs.readFile('./a.txt',(err,data)=>{
if(err){
console.log(err);
}else{
console.log(data.toString());
}
})
fs.writeFile('b.txt','月薪2元',{flag:"a"},(err)=>{
if(err){
throw err
}
})
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