JSFiddle - React, Tailwind, and code Playground

JavaScript

var imagesInUploadsFolder = [
    '/path/to/img1.png',
    '/path/to/img2.png',
    '/path/to/img3.png'
];
var imagesInDatabaseTable = [
    '/path/to/img1.jpg',
    '/path/to/img2.png',
    '/path/to/img4.png'
];

var database_json = JSON.stringify(imagesInDatabaseTable);

for (var i = 0; i < imagesInUploadsFolder.length; i++) {
    console.log(imagesInUploadsFolder[i] + ' in ' + database_json);
    if (database_json.indexOf(imagesInUploadsFolder[i]) > -1) {
        console.log('In database: ' + imagesInUploadsFolder[i]);
    } else {
        console.log('Not in database: ' + imagesInUploadsFolder[i]);
    }
}