/Javascript/Node.js/Node js write read string to file

Node js write read string to file

Save text to file nodejs

fs = require('fs');
fs.writeFile(filename, data, [encoding], [callback])

Source: nodejs.org

Node js write read string to file

// basic read-write string from-to file with node.js 
var fs = require('fs');
var opath = 'test.txt'; 
var ostring = 'Hello!'
fs.writeFileSync(opath, ostring, 'utf8');
var istring = fs.readFileSync('test.txt').toString();
console.log(istring);

// with error handling and logging:  
fs.readFile('test.txt', 'utf8' , (err, data) => {
    if (err) {
        console.error(err)
        return
    }
    console.log(data)
  });

// or fs.readFileSync() or use streams for large files
// for better memory consumption and execution speed
// https://nodejs.dev/learn/reading-files-with-nodejs

Similar codes

2 votes114 views1 answer
Node readFileSync json
Javascript Node.js
0 vote113 views1 answer
Stop python script nodejs
Javascript Node.js
2 votes109 views1 answer
Libuv nodejs
Javascript Node.js
38 votes112 views6 answers
Nodejs cors
Javascript Node.js
33 votes110 views6 answers
Nodejs current timestamp
Javascript Node.js
52 votes212 views6 answers
Update nodejs
Javascript Node.js
6 votes103 views1 answer
Add numbers from array nodejs
Javascript Node.js
0 vote106 views1 answer
Node mongodb select collection
Javascript Node.js
0 vote112 views1 answer
Make a backend server in node
Javascript Node.js
0 vote110 views2 answers
Send x-www-form-urlencoded request nodejs
Javascript Node.js