/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 vote253 views1 answer
Kick members node js
Javascript Node.js
0 vote243 views1 answer
Nodejs convert buffer to uint8array
Javascript Node.js
0 vote243 views1 answer
Node biology definition
Javascript Node.js
0 vote253 views2 answers
Buffer to image nodejs
Javascript Node.js
104 votes316 views6 answers
Install nodejs ubuntu
Javascript Node.js
9 votes258 views6 answers
Node js
Javascript Node.js
0 vote260 views1 answer
Node express app.listen at specific port & host
Javascript Node.js
-1 vote241 views1 answer
Split and join in node js
Javascript Node.js
0 vote264 views1 answer
Performance.now nodejs example
Javascript Node.js
0 vote273 views1 answer
How to create public folder in node js
Javascript Node.js