/Javascript/Node.js/Use node js to check if a json file exists

Use node js to check if a json file exists

Node check if file exists

const fs = require("fs"); // Or `import fs from "fs";` with ESM
if (fs.existsSync(path)) {
    // Do something
}

Source: stackoverflow.com

Use node js to check if a json file exists

const fs = require('fs')

const path = './file.txt'

try {
  if (fs.existsSync(path)) {
    //file exists
  }
} catch(err) {
  console.error(err)
}

Source: flaviocopes.com

Use node js to check if a json file exists

const fs = require('fs')

const path = './file.txt'
//Async method
fs.access(path, fs.F_OK, (err) => {
  if (err) {
    console.error(err)
    return
  }

  //file exists
})

Source: flaviocopes.com

Check if file exists javascript

function executeIfFileExist(src, callback) {
    var xhr = new XMLHttpRequest()
    xhr.onreadystatechange = function() {
        if (this.readyState === this.DONE) {
            callback()
        }
    }
    xhr.open('HEAD', src)
}

-2

Source: stackoverflow.com

Similar codes

18 votes362 views2 answers
Node js gitignore
Javascript Node.js
0 vote356 views1 answer
Node load testing-check
Javascript Node.js
0 vote322 views1 answer
Nodejs sha512 decrypt
Javascript Node.js
0 vote344 views1 answer
Node temp = new Node(6, head, head.getNext()); head.setNext(temp); temp.getNext().setPrev(temp); Node temp1 = tail.getPrev(); tail.setPrev(temp1.getPrev()); temp1.getPrev().setNext(tail);
Javascript Node.js
46 votes374 views4 answers
Node express params
Javascript Node.js
4 votes330 views6 answers
Node js kill process
Javascript Node.js
1 vote343 views2 answers
Model export in node js
Javascript Node.js
3 votes372 views3 answers
Node js + mongoose
Javascript Node.js
54 votes451 views6 answers
How to update node js version
Javascript Node.js
1 vote376 views1 answer
Postgresql nodejs
Javascript Node.js