JSFiddle - React, Tailwind, and code Playground

JavaScript

var images =["Cat.png", "Cock.png","Dog.png","Parrot.png","Penguin.png","Rabbit.png","Parrot.png"];

images.forEach(function(img){
    var count = 0;
    images.forEach(function(image, i){
        if(img === image){
            delete images[i];
            count++;
        }
    });
    console.log(img, count);          
});


console.log('*******************************');