如何使用模态在同一页面上添加多个幻灯片？

Question

I created modals on my website and I am trying to add different slideshows on each modal.

With this code, I get the same slideshow on each modal but just with some slides added.
I want to add slideshows that don't affect the others.

How can I do this?

HTML

<div class="experience-list exper1">
  <img src="" class="exp-image" />
  <button class="overlay" id="myBtn" data-modal="myModal">

    <div class="exper-details">
      <div class="exper-title"></div>
      <div class="exper-info"></div>
    </div>
  </button>

  <div id="myModal" class="modal">
    <div class="modal-content">

      <div class="slideshow-container">
        <div class="mySlides fade">
          <div class="numbertext"><!--1 / 3--></div>
          <img src="" />

        </div>
        <div class="mySlides fade">
          <div class="numbertext"></div>
          <img src="" />

        </div>
        <div class="mySlides fade">
          <div class="numbertext"></div>
          <img src="" />

        </div>

        <a class="prev" onclick="plusSlides(-1)">&#10094;</a>
        <a class="next" onclick="plusSlides(1)">&#10095;</a>

      </div>
      <div class="modal-info">
        <div class="modal-details">
        </div>
      </div>
      <span class="close">&times;</span>
    </div>
  </div>
</div>
<div class="experience-list exper2">
  <img src="" class="exp-image" />
  <button class="overlay" id="myBtn2" data-modal="myModal2">

    <div class="exper-details">
      <div class="exper-title"></div>
      <div class="exper-info"></div>
    </div>
  </button>
  <div id="myModal2" class="modal">
    <div class="modal-content">

      <div class="slideshow-container">
        <div class="mySlides fade">
          <div class="numbertext"><!--1 / 3--></div>
          <img src="" />
        </div>

        <div class="mySlides fade">
          <div class="numbertext"></div>
          <img src="" />
        </div>

        <div class="mySlides fade">
          <div class="numbertext"></div>
          <img src="" />
        </div>

        <a class="prev" onclick="plusSlides(-1)">&#10094;</a>
        <a class="next" onclick="plusSlides(1)">&#10095;</a>

      </div>
      <div class="modal-info">
        <div class="modal-details">
        </div>
      </div>
      <span class="close">&times;</span>
    </div>
  </div>
</div>

JAVASCRIPT

<!--MODAL-->

<script>
    var modalBtns = [...document.querySelectorAll(".overlay")];
    modalBtns.forEach(function (btn) {
        btn.onclick = function () {
            var modal = btn.getAttribute('data-modal');

            document.getElementById(modal).style.display = "block";
        }
    });

    var closeBtns = [...document.querySelectorAll(".close")];
    closeBtns.forEach(function (btn) {
        btn.onclick = function () {
            var modal = btn.closest('.modal');
            modal.style.display = "none";
        }
    });

    window.onclick = function (event) {
        if (event.target.className === "modal") {
            event.target.style.display = "none";
        }
    }
</script>

<!--SLIDESHOW-->
<script>
    var slideIndex = 1;
    showSlides(slideIndex);

    function plusSlides(n) {
        showSlides(slideIndex += n);
    }

    function currentSlide(n) {
        showSlides(slideIndex = n);
    }

    function showSlides(n) {
        var i;
        var slides = document.getElementsByClassName("mySlides");
        var dots = document.getElementsByClassName("dot");
        if (n > slides.length) { slideIndex = 1 }
        if (n < 1) { slideIndex = slides.length }
        for (i = 0; i < slides.length; i++) {
            slides[i].style.display = "none";
        }
        for (i = 0; i < dots.length; i++) {
            dots[i].className = dots[i].className.replace(" active", "");
        }
        slides[slideIndex - 1].style.display = "block";
        dots[slideIndex - 1].className += " active";
    }
</script>

HERE IS MY MODAL CODE ADDED TO PREVIOUS QUESTION MODAL

<!--MODAL-->
<script>
    var modalBtns = [...document.querySelectorAll(".overlay")];
    modalBtns.forEach(function (btn) {
        btn.onclick = function () {
            var modal = btn.getAttribute('data-modal');

            document.getElementById(modal).style.display = "block";
        }
    });

    var closeBtns = [...document.querySelectorAll(".close")];
    closeBtns.forEach(function (btn) {
        btn.onclick = function () {
            var modal = btn.closest('.modal');
            modal.style.display = "none";
        }
    });

    window.onclick = function (event) {
        if (event.target.className === "modal") {
            event.target.style.display = "none";
        }
    }
</script>

MODAL CSS

/* MODAL */

.modal {
    display:none;
    position:fixed;
    z-index: 1;
    /*padding-top: 100px;*/
    margin-top:100px;
    left:0;
    top:0;
    width:100vw;
    height: 750px;
    overflow:auto;
    /*background-color: rgb(0,0,0);*/
    background-color: rgba(0,0,0,0.4);

}

.modal-content {
    background-color: #fff;
    color: #252C3C;
    margin: auto;
    padding: 0;
    /*border: 1px solid #888;*/
    width: 50%;
    height: 720px;
}


.modal-info {
    border-top: 3px solid #252C3C;
    margin-left: 20px;
    margin-right:20px;

}
.modal-info h1 {
    font-weight: 400;
}

.modal-info h4 {
    font-size: 18px;

}

.modal-details {
    border-bottom: 1px solid rgba(0,0,0,0.1);
}
.modal-info p {
    font-size: 18px;
}
.modal-info a {
    padding: 11px 30px;
    margin-top:10px;
    font-size: 15px;
    transition: all .5s;
    cursor: pointer;
    background: #E31B6D;
    color: #fff;
    font-weight: 600;
    border: 0;
}

.close {
    color: #252C3C;
    float:right;
    font-size: 45px;
    font-weight: bold;
    position:fixed;
    left:74%;
    top:82%;
}


.close:hover, .close:focus {
    color:pink;
    text-decoration:none;
    cursor:pointer;
}

Answer 1

You can try something like this =>

In javascript:

var slideIndex = 1;
showSlides(slideIndex, "mySlides");
showSlides(slideIndex, "mySlides2");

    function plusSlides(n, slide) {
        showSlides(slideIndex += n, slide);
    }

    function currentSlide(n, slide) {
        showSlides(slideIndex = n, slide);
    }

function showSlides(n, slide ) {
        var i;
        var slides = document.getElementsByClassName(slide);
        var dots = document.getElementsByClassName("dot");
        if (n > slides.length) { slideIndex = 1 }
        if (n < 1) { slideIndex = slides.length }
        for (i = 0; i < slides.length; i++) {
            slides[i].style.display = "none";
        }
        for (i = 0; i < dots.length; i++) {
            dots[i].className = dots[i].className.replace(" active", "");
        }
        slides[slideIndex - 1].style.display = "block";
        //dots[slideIndex - 1].className += " active";
    }

In html:

<div class="experience-list exper1">
                <img src="" class="exp-image" />
                <button class="overlay" id="myBtn" data-modal="myModal">

                    <div class="exper-details">
                        <div class="exper-title"></div>
                        <div class="exper-info">
                    </div>
                </button>
                <div id="myModal" class="modal">
                    <div class="modal-content">


                        <div class="slideshow-container">
                            <div class="mySlides fade">
                                <div class="numbertext"><!--1 / 3--></div>
                                <img src="" />

                            </div>
                            <div class="mySlides fade">
                                <div class="numbertext"></div>
                                <img src="" />

                            </div>
                            <div class="mySlides fade">
                                <div class="numbertext"></div>
                                <img src="" />

                            </div>

                            <a class="prev" onclick="plusSlides(-1,'mySlides')">&#10094;</a>
                            <a class="next" onclick="plusSlides(1,'mySlides')">&#10095;</a>

                        </div>
                        <div class="modal-info">
                            <div class="modal-details">
                            </div>
                        </div>
                        <span class="close">&times;</span>
                    </div>
                </div>
            </div>
<div class="experience-list exper2">
                <img src="" class="exp-image" />
                <button class="overlay" id="myBtn2" data-modal="myModal2">

                    <div class="exper-details">
                        <div class="exper-title"></div>
                        <div class="exper-info"></div>
                    </div>
                </button>
                <div id="myModal2" class="modal">
                    <div class="modal-content">


                        <div class="slideshow-container">
                            <div class="mySlides2 fade">
                                <div class="numbertext"><!--1 / 3--></div>
                                <img src="" />

                            </div>
                            <div class="mySlides2 fade">
                                <div class="numbertext"></div>
                                <img src="" />

                            </div>
                            <div class="mySlides2 fade">
                                <div class="numbertext"></div>
                                <img src="" />

                            </div>

                            <a class="prev" onclick="plusSlides(-1,'mySlides2')">&#10094;</a>
                            <a class="next" onclick="plusSlides(1,'mySlides2')">&#10095;</a>

                        </div>
                        <div class="modal-info">
                            <div class="modal-details">
                            </div>
                        </div>
                        <span class="close">&times;</span>
                    </div>
                </div>
            </div>