/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

0 vote226 views1 answer
Nodejs Process Object
Javascript Node.js
0 vote228 views1 answer
Node load testing-check
Javascript Node.js
0 vote231 views1 answer
Difference between ajax and node js
Javascript Node.js
1 vote262 views2 answers
Nodejs request post
Javascript Node.js
0 vote223 views1 answer
Creating room in ws node js
Javascript Node.js
1 vote251 views1 answer
Status nodejs
Javascript Node.js
21 votes231 views2 answers
Delete all childs in node
Javascript Node.js
6 votes337 views2 answers
How to install mongodb in node js
Javascript Node.js
35 votes220 views3 answers
Export function node js
Javascript Node.js
0 vote222 views1 answer
Mocha test cases in node js example
Javascript Node.js