Example of file / folders scripting in OS X with Javascript

OSAjs-file-folder-exists.js

/**
 * Example of file / folders scripting in OS X with Javascript
 * Open /Applications/Script Editor.app, paste the code and click Run button
 *
 * @author Oleg Fomin <ofstudio@gmail.com>
 *
 */

function file_exists(name) {
    try {
        return Application('System Events').files.byName(name).exists()
    } catch (e) {
        return false;
    }
}


function folder_exists(name) {
    try {
        return Application('System Events').folders.byName(name).exists()
    } catch (e) {
        return false;
    }
}


file_exists('~/Desktop/exists.txt');    // true
file_exists('~/Desktop/no-exists.txt'); // false
folder_exists('/Library');              // true
folder_exists('/somethingelse');        // false