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const fs = require('fs');
let fpath = 'E:\\112.txt';
fs.readFile(fpath,function(err,data1){
fs.readFile(fpath,function(err,data2){
fs.readFile(fpath,function(err,data3){
fs.writeFile('E:\\113.txt',data1+'>>>'+data2+'>>>'+data3,function(err){
console.log(err);
});
});
});
});
async function readData(fpath){
const fs = require('fs');
let fs1, fs2, fs3;
try{
fs1 = await fs.readFile(fpath);
fs2 = await fs.readFile(fpath);
fs3 = await fs.readFile(fpath);
await fs.writeFile('E:\\code\\Leap 1B DT2 code\\120\\113.txt', fs1 + fs2 + fs3);
}catch(e){
console.error(e.message);
}
console.log(fs3);
}
readData(fpath);