/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

0 vote236 views2 answers
How to access css and js with nodejs
Javascript Node.js
1 vote252 views2 answers
How ot send user agent in nodejs https header
Javascript Node.js
0 vote239 views1 answer
Calculate init code hash nodejs
Javascript Node.js
3 votes250 views2 answers
Nodejs how to use await in foreach loop
Javascript Node.js
0 vote245 views1 answer
Readfle nodejs
Javascript Node.js
0 vote233 views1 answer
Nodejs optimizing compuler try catch
Javascript Node.js
0 vote278 views1 answer
How to render a new page in node js through express
Javascript Node.js
0 vote264 views2 answers
Send x-www-form-urlencoded request nodejs
Javascript Node.js
0 vote268 views1 answer
Transaction commit rollback nodejs
Javascript Node.js
-1 vote234 views1 answer
Split and join in node js
Javascript Node.js