Question

请问有人帮忙解决这个冲突吗？我真的很感激。

我试图在一个HTML页面上使用来自w3schools.com的Slider和Light Box的两个javascripts但是，我想，两个javascripts对每个函数都使用相同的名称（或值），所以当我在一个页面中使用它们时同时，他们不工作。但是当我为每个滑块或灯箱删除一组css / html / javascript时，效果都不错。

请帮帮我。非常感谢你提前。

CSS

<style>
body {
  font-family: Verdana, sans-serif;
  margin: 0;
}

/* --------- Slider ---------- */

* {box-sizing:border-box}

/* Slideshow container */
.slideshow-container {
  max-width: 1000px;
  position: relative;
  margin: auto;
}

.mySlides {
    display: none;
}

/* Next & previous buttons */
.prev, .next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  margin-top: -22px;
  padding: 16px;
  color: white;
  font-weight: bold;
  font-size: 18px;
  transition: 0.6s ease;
  border-radius: 0 3px 3px 0;
}

/* Position the "next button" to the right */
.next {
  right: 0;
  border-radius: 3px 0 0 3px;
}

/* On hover, add a black background color with a little bit see-through */
.prev:hover, .next:hover {
  background-color: rgba(0,0,0,0.8);
}

/* Caption text */
.text {
  color: #f2f2f2;
  font-size: 15px;
  padding: 8px 12px;
  position: absolute;
  bottom: 8px;
  width: 100%;
  text-align: center;
}

/* Number text (1/3 etc) */
.numbertext {
  color: #f2f2f2;
  font-size: 12px;
  padding: 8px 12px;
  position: absolute;
  top: 0;
}

/* The dots/bullets/indicators */
.dot {
  cursor:pointer;
  height: 13px;
  width: 13px;
  margin: 0 2px;
  background-color: #bbb;
  border-radius: 50%;
  display: inline-block;
  transition: background-color 0.6s ease;
}

.active, .dot:hover {
  background-color: #717171;
}

/* Fading animation */
.fade {
  -webkit-animation-name: fade;
  -webkit-animation-duration: 1.5s;
  animation-name: fade;
  animation-duration: 1.5s;
}

@-webkit-keyframes fade {
  from {opacity: .4}
  to {opacity: 1}
}

@keyframes fade {
  from {opacity: .4}
  to {opacity: 1}
}
/* -----  Light Box -------*/
.row > .column {
  padding: 0 8px;
}

.row:after {
  content: "";
  display: table;
 clear: both;
}

.column {
  float: left;
  width: 25%;
}

/* The Modal (background) */
.modal {
  display: none;
  position: fixed;
  z-index: 1;
  padding-top: 100px;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: black;
}

/* Modal Content */
.modal-content {
  position: relative;
  background-color: transparent;
  margin: auto;
  padding: 0;
  width: 90%;
  max-width: 1200px;
  border: none;
}

/* The Close Button */
.close {
  color: white;
  position: absolute;
  top: 10px;
  right: 25px;
  font-size: 35px;
  font-weight: bold;
}

.close:hover,
.close:focus {
  color: #999;
  text-decoration: none;
  cursor: pointer;
}

.mySlides {
  display: none;
}

.cursor {
  cursor: pointer
}

/* Next & previous buttons */
.prev,
.next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  padding: 16px;
  margin-top: -50px;
  color: white;
  font-weight: bold;
  font-size: 20px;
  transition: 0.6s ease;
  border-radius: 0 3px 3px 0;
  user-select: none;
  -webkit-user-select: none;
}

/* Position the "next button" to the right */
.next {
  right: 0;
  border-radius: 3px 0 0 3px;
}

/* On hover, add a black background color with a little bit see-through */
.prev:hover,
.next:hover {
  background-color: rgba(0, 0, 0, 0.8);
}

/* Number text (1/3 etc) */
.numbertext {
 color: #f2f2f2;
  font-size: 12px;
  padding: 8px 12px;
  position: absolute;
  top: 0;
}

img {
  margin-bottom: -4px;
}

.caption-container {
  text-align: center;
  background-color: black;
  padding: 2px 16px;
 color: white;
}

.demo {
  opacity: 0.6;
}

.active,
.demo:hover {
  opacity: 1;
}

img.hover-shadow {
  transition: 0.3s
}

.hover-shadow:hover {
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19)
}
.container {margin: 0 auto; max-width: 1000px;}
</style>

HTML

<body>
<div class="container">
    <!--  ================  Slideshow  ================ -->
    <div class="slideshow-container mt20 mb10">
        <div class="mySlides fade">
        <div class="numbertext">1 / 3</div>
        <img src="https://www.w3schools.com/howto/img_nature_wide.jpg" style="width:100%">
        <div class="text">Caption Text</div>
    </div>

    <div class="mySlides fade">
        <div class="numbertext">2 / 3</div>
        <img src="https://www.w3schools.com/howto/img_fjords_wide.jpg" style="width:100%">
        <div class="text">Caption Two</div>
    </div>

    <div class="mySlides fade">
        <div class="numbertext">3 / 3</div>
        <img src="https://www.w3schools.com/howto/img_mountains_wide.jpg" style="width:100%">
        <div class="text">Caption Three</div>
    </div>

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

    <div style="text-align:center;margin-top:10px;">
        <span class="dot" onclick="currentSlide(1)"></span>
        <span class="dot" onclick="currentSlide(2)"></span>
        <span class="dot" onclick="currentSlide(3)"></span>
    </div> <!-- // Slider -->

    <!-- Lightbox -->

    <h2 style="text-align:center">Lightbox</h2>

    <div class="row">
      <div class="column">
        <img src="https://www.w3schools.com/howto/img_nature.jpg" style="width:100%" onclick="openModal();currentSlide(1)" class="hover-shadow cursor">
      </div>
      <div class="column">
        <img src="https://www.w3schools.com/howto/img_fjords.jpg" style="width:100%" onclick="openModal();currentSlide(2)" class="hover-shadow cursor">
      </div>
      <div class="column">
        <img src="https://www.w3schools.com/howto/img_mountains.jpg" style="width:100%" onclick="openModal();currentSlide(3)" class="hover-shadow cursor">
      </div>
      <div class="column">
        <img src="https://www.w3schools.com/howto/img_lights.jpg" style="width:100%" onclick="openModal();currentSlide(4)" class="hover-shadow cursor">
      </div>
    </div>

    <div id="myLightBox" class="modal">
      <span class="close cursor" onclick="closeModal()">&times;</span>
      <div class="modal-content">

        <div class="LB-Slides">
          <div class="numbertext">1 / 4</div>
          <img src="https://www.w3schools.com/howto/img_nature_wide.jpg" style="width:100%">
        </div>

        <div class="LB-Slides">
          <div class="numbertext">2 / 4</div>
          <img src="https://www.w3schools.com/howto/img_fjords_wide.jpg" style="width:100%">
        </div>

        <div class="LB-Slides">
          <div class="numbertext">3 / 4</div>
          <img src="https://www.w3schools.com/howto/img_mountains_wide.jpg" style="width:100%">
        </div>

        <div class="LB-Slides">
          <div class="numbertext">4 / 4</div>
          <img src="https://www.w3schools.com/howto/img_lights_wide.jpg" style="width:100%">
        </div>

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

        <div class="caption-container">
          <p id="caption"></p>
        </div>


        <div class="column">
          <img class="demo cursor" src="https://www.w3schools.com/howto/img_nature_wide.jpg" style="width:100%" onclick="currentSlide(1)" alt="Nature and sunrise">
        </div>
        <div class="column">
          <img class="demo cursor" src="https://www.w3schools.com/howto/img_fjords_wide.jpg" style="width:100%" onclick="currentSlide(2)" alt="Trolltunga, Norway">
        </div>
        <div class="column">
          <img class="demo cursor" src="https://www.w3schools.com/howto/img_mountains_wide.jpg" style="width:100%" onclick="currentSlide(3)" alt="Mountains and fjords">
        </div>
        <div class="column">
          <img class="demo cursor" src="https://www.w3schools.com/howto/img_lights_wide.jpg" style="width:100%" onclick="currentSlide(4)" alt="Northern Lights">
        </div>
      </div>
    </div>
  </div><!-- // Lightbox -->
</div>

的Javascript

<script>

/* ---------  Slider  ----------  */
var slideIndex = 1;
showSlides(slideIndex);
setInterval(function(){ showSlides(++slideIndex); }, 4000);

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";
}   



/* ---------  LightBox  ---------- */
function openModal() {
  document.getElementById('myLightBox').style.display = "block";
}

function closeModal() {
  document.getElementById('myLightBox').style.display = "none";
}

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("LB-Slides");
  var dots = document.getElementsByClassName("demo");
  var captionText = document.getElementById("caption");
  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";
  captionText.innerHTML = dots[slideIndex-1].alt;
}
/* ---------  //LightBox  ---------- */

</script>

</body>

Answer 1

首先 - 是的，你是对的，由于相同的方法名称，你的两个脚本都相互冲突。由于它是在全局范围（窗口）中编写的，因此您基本上会覆盖彼此的功能。

您可以尝试使用JavaScript模块模式来隔离每个＆＃34;小部件的范围＆＃34;，即使您将使用相同的方法名称，您的代码也将在其自己的范围内执行

作为快速示例，如何将其重写为模块：

http://jsbin.com/pipajawiwa/1/edit?html,js,output

/* ---------  Slider  ----------  */

var slider = (function() {
    var slider = {};

    slider.setIntervals = function() {
        setInterval(function() {
            slider.showSlides(++slider.slideIndex);
        }, 4000);
    };
    slider.plusSlides = function(n) {
        slider.showSlides(slider.slideIndex += n);
    };
    slider.currentSlide = function(n) {
        slider.showSlides(slider.slideIndex = n);
    };

    slider.showSlides = function(n) {
        var i;
        var slides = document.getElementsByClassName("mySlides");
        var dots = document.getElementsByClassName("dot");
        if (n > slides.length) {
            slider.slideIndex = 1
        }
        if (n < 1) {
            slider.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[slider.slideIndex - 1].style.display = "block";
        dots[slider.slideIndex - 1].className += " active";
    };

    slider.init = function() {
        slider.slideIndex = 1;
        slider.showSlides(slider.slideIndex);
        slider.setIntervals();
    };

    return slider;
})();


/* ---------  LightBox  ---------- */

var lightbox = (function() {
    var lightbox = {};

    lightbox.openModal = function() {
        document.getElementById('myLightBox').style.display = "block";
    };

    lightbox.closeModal = function() {
        document.getElementById('myLightBox').style.display = "none";
    };


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

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

    lightbox.showSlides = function(n) {
        var i;
        var slides = document.getElementsByClassName("LB-Slides");
        var dots = document.getElementsByClassName("demo");
        var captionText = document.getElementById("caption");
        if (n > slides.length) {
            lightbox.slideIndex = 1
        }
        if (n < 1) {
            lightbox.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[lightbox.slideIndex - 1].style.display = "block";
        dots[lightbox.slideIndex - 1].className += " active";
        captionText.innerHTML = dots[lightbox.slideIndex - 1].alt;
    };

    lightbox.init = function() {
        lightbox.slideIndex = 1;
        lightbox.showSlides(lightbox.slideIndex);
    };

    return lightbox;
})();


slider.init(); // initialize slider module (widget);
lightbox.init(); // initialize lightbox module (widget);

请注意您还需要调整html onclick事件，因为它应该被称为每个widget方法，而不是全局一次。

P.S。：我不喜欢w3school的这两段代码片段（在代码质量，性能方面，学习模式方面），但这完全是另一个需要讨论的话题。但是为了使其发挥作用＆＃34;这个链接到上面的jsbin应该有帮助。

滑块＆amp;灯箱 - Javascript冲突

1 个答案: