readfilesync
const fs = require('fs')
try {
const data = fs.readFileSync('/Users/joe/test.txt', 'utf8')
console.log(data)
} catch (err) {
console.error(err)
}readfilesync
const fs = require('fs')
try {
const data = fs.readFileSync('/Users/joe/test.txt', 'utf8')
console.log(data)
} catch (err) {
console.error(err)
}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);
});node js write file
// fs_write.js
const fs = require('fs');
// specify the path to the file, and create a buffer with characters we want to write
let path = 'ghetto_gospel.txt';
let buffer = new Buffer('Those who wish to follow me\nI welcome with my hands\nAnd the red sun sinks at last');
// open the file in writing mode, adding a callback function where we do the actual writing
fs.open(path, 'w', function(err, fd) {
if (err) {
throw 'could not open file: ' + err;
}
// write the contents of the buffer, from position 0 to the end, to the file descriptor returned in opening our file
fs.write(fd, buffer, 0, buffer.length, null, function(err) {
if (err) throw 'error writing file: ' + err;
fs.close(fd, function() {
console.log('wrote the file successfully');
});
});
});fs.readfile
fs.readFile('filename', function read(err, data) {
if (err) {
throw err;
}
var content = data;
console.log(content);
});javascript fs read
fs.readFile('/etc/passwd', (err, data) => {
if (err) throw err;
console.log(data);
});Copyright © 2021 Codeinu
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