node if file exists

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

let file = '../path/to/chad_warden.mpeg';

// async
const fileExists = (file) => {
    return new Promise((resolve, reject) => {
        fs.access(file, fs.constants.F_OK, (err) => {
            err ? reject(false) : resolve(true)
        });
    })
}

// sync
const fileExistsSync = (file) => {
    try {
        fs.accessSync(file, fs.constants.R_OK | fs.constants.W_OK);
        return true;
      } catch (err) {
        return false;
      }
}const fs = require("fs"); // Or `import fs from "fs";` with ESM
if (fs.existsSync(path)) {
    // Do something
}
function executeIfFileExist(src, callback) {
    var xhr = new XMLHttpRequest()
    xhr.onreadystatechange = function() {
        if (this.readyState === this.DONE) {
            callback()
        }
    }
    xhr.open('HEAD', src)
}
Source

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