Random slider

[Danish Qazi]

Hi, I'm making a random slider with Javascript programming language.
I have stored the slider information in the js array.
I can display slider shapes randomly.
However, when the system selects a random index from the array, there are times when it can select the same index at least two times in a row.
Accordingly, the slider is shown in the same way, with a minimum of 2 times.
I need a code to redeem it.

JavaScript:
const models = [
    {
        name: 'Bmw 418d',
        image: 'img/bmw.jpg',
    },
    {
        name : 'Mazda CX-3',
        image : 'img/mazda.jpg',
    },
    {
        name : 'Volvo S60',
        image : 'img/volvo.jpg',
    },
    {
        name : 'Skoda Superb',
        image : 'img/skoda.jpg',
    },
    {
        name : 'Honda Civic',
        image : 'img/honda.jpg',
    }
];

const countSliders = models.length;

function init(options) {

    showSlider(index);

    interval = setInterval(() => {
        if(options.random) {
                index = Math.floor(Math.random()*countSliders); //->array icerisinden random deyeri minimum 2 defe eyni olaraq secen js statement.
        }
        else {