/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

2 votes218 views2 answers
Nodejs date add days
Javascript Node.js
0 vote220 views1 answer
How to create an async function from a string in node js
Javascript Node.js
0 vote215 views1 answer
Node js get file name without extension
Javascript Node.js
2 votes201 views1 answer
Invoke lambda nodejs
Javascript Node.js
1 vote195 views1 answer
Save text to file nodejs
Javascript Node.js
1 vote227 views1 answer
Aws list all files in s3 bucket node js aws
Javascript Node.js
0 vote153 views1 answer
Update node js version ubuntu 18.04
Javascript Node.js
4 votes208 views6 answers
Node js kill process
Javascript Node.js
11 votes211 views5 answers
Dotenv nodejs
Javascript Node.js
0 vote206 views1 answer
Babel start command nodejs
Javascript Node.js