Node fs.existsSync() Method
The fs.existsSync() method is used to synchronously check if a file already exists in the given path or not. It returns a boolean value which indicates the presence of a file.
Syntax:
fs.existsSync( path )
Parameters:
This method accepts a single parameter as mentioned above and described below:
- path: It holds the path of the file that has to be checked. It can be a String, Buffer, or URL.
Return Value:
It returns a boolean value i.e true if the file exists otherwise returns false.
Example 1: Below programs illustrate the fs.existsSync() method in Node.js:
Javascript
// Node.js program to demonstrate the // fs.existsSync() method // Import the filesystem module const fs = require('fs');// Get the current filenames // in the directory getCurrentFilenames();let fileExists = fs.existsSync('hello.txt');console.log("hello.txt exists:", fileExists);fileExists = fs.existsSync('world.txt');console.log("world.txt exists:", fileExists);// Function to get current filenames // in directory function getCurrentFilenames() { console.log("\nCurrent filenames:"); fs.readdirSync(__dirname).forEach(file => { console.log(file); }); console.log("\n");} |
Output:
Current filenames:
hello.txt
index.js
package.json
hello.txt exists: true
world.txt exists: false
Example 2: Below programs illustrate the fs.existsSync() method in Node.js