Intégrer un timer dans un slideshow en JS

Bonjour :lol::lol:

Je ne m'y connais pas du tout en js donc malgré divers tuto de slideshow je rame

Je souhaite faire defiler mes photos avec un timer de 3 secondes par exemple.Je suppose qu'il faut que j'utilise un set timeout ou set interval

Pour le moment elles ne defilent qu'avec des flèches...

Je souhaite que toutes les 3 secondes il y ait la fonction de la flèche droite qui se declenche...

Voici le javavascript

Pouvez vous me dire quel code javascript modifier et comment ?

Code:

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// when the DOM is ready...
$(document).ready(function () {
 
    var $panels = $('#slider .scrollContainer > div');
    var $container = $('#slider .scrollContainer');
 
    // if false, we'll float all the panels left and fix the width 
    // of the container
    var horizontal = true;
 
    // float the panels left if we're going horizontal
    if (horizontal) {
        $panels.css({
            'float' : 'left',
            'position' : 'relative' // IE fix to ensure overflow is hidden
        });
 
        // calculate a new width for the container (so it holds all panels)
        $container.css('width', $panels[0].offsetWidth * $panels.length);
    }
 
    // collect the scroll object, at the same time apply the hidden overflow
    // to remove the default scrollbars that will appear
    var $scroll = $('#slider .scroll').css('overflow', 'hidden');
 
    // apply our left + right buttons
    $scroll
        .before('<img class="scrollButtons left" src="./images/gauche.jpg" />')
        .after('<img id="rightBut" class="scrollButtons right" src="./images/droite.jpg" />');
 
 
 
    // handle nav selection
    function selectNav() {
        $(this)
            .parents('ul:first')
                .find('a')
                    .removeClass('selected')
                .end()
            .end()
            .addClass('selected');
    }
 
    $('#slider .navigation').find('a').click(selectNav);
 
    // go find the navigation link that has this target and select the nav
    function trigger(data) {
        var el = $('#slider .navnav .navigation').find('a[href$="' + data.id + '"]').get(0);
        selectNav.call(el);
    }
 
    if (window.location.hash) {
        trigger({ id : window.location.hash.substr(1) });
    } else {
        $('ul.navigation a:first').click();
    }
 
    // offset is used to move to *exactly* the right place, since I'm using
    // padding on my example, I need to subtract the amount of padding to
    // the offset.  Try removing this to get a good idea of the effect
    var offset = parseInt((horizontal ? 
        $container.css('paddingTop') : 
        $container.css('paddingLeft')) 
        || 0) * -1;
 
 
    var scrollOptions = {
        target: $scroll, // the element that has the overflow
 
        // can be a selector which will be relative to the target
        items: $panels,
 
        navigation: '.navigation a',
 
        // selectors are NOT relative to document, i.e. make sure they're unique
        prev: 'img.left', 
        next: 'img.right',
 
        // allow the scroll effect to run both directions
        axis: 'xy',
 
        onAfter: trigger, // our final callback
 
        offset: offset,
 
        // duration of the sliding effect
        duration: 500,
 
        // easing - can be used with the easing plugin: 
        // http://gsgd.co.uk/sandbox/jquery/easing/
        easing: 'swing'
    };
 
    // apply serialScroll to the slider - we chose this plugin because it 
    // supports// the indexed next and previous scroll along with hooking 
    // in to our navigation.
    $('#slider').serialScroll(scrollOptions);
 
    // now apply localScroll to hook any other arbitrary links to trigger 
    // the effect
    $.localScroll(scrollOptions);
 
    // finally, if the URL has a hash, move the slider in to position, 
    // setting the duration to 1 because I don't want it to scroll in the
    // very first page load.  We don't always need this, but it ensures
    // the positioning is absolutely spot on when the pages loads.
    scrollOptions.duration = 1;
    $.localScroll.hash(scrollOptions);
 
 
 
 
});