fs.writefile
const fs = require('fs');
fs.writeFile("/tmp/test", "Hey there!", function(err) {
if(err) {
return console.log(err);
}
console.log("The file was saved!");
});
// Or
fs.writeFileSync('/tmp/test-sync', 'Hey there!');nodejs readfile
const fs = require('fs');
fs.readFile('/Users/joe/test.txt', 'utf8' , (err, data) => {
if (err) {
console.error(err);
return
}
console.log(data);
});fstream read write mode
stream file;
file.open(fileName,ios::in | ios::out);createwritestream create file
var ws = fs.createWriteStream('anypath');
ws.on('open', function(fd) {
console.log(fs.existsSync('anypath'));
console.log(fs.existsSync('anypath'));
console.log(fs.existsSync('anypath'));
});createwritestream create file
function download(url, tempFilepath, filepath, callback) {
var tempFile = fs.createWriteStream(tempFilepath);
tempFile.on('open', function(fd) {
http.request(url, function(res) {
res.on('data', function(chunk) {
tempFile.write(chunk);
}).on('end', function() {
tempFile.end();
fs.renameSync(tempFile.path, filepath);
return callback(filepath);
});
});
});
}Copyright © 2021 Codeinu
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