HTML，CSS，JavaScript中的图库无法正常工作

MateoProgramistaZaDyche

根据这个https://www.w3schools.com/howto/tryit.asp?filename=tryhow_css_modal_img，我遇到了一个画廊的小问题（我是初学者-还在学习）。当我单击第一张照片时，它可以正常工作，但其他照片似乎没有显示。

    // Get the modal
    var modal = document.getElementById("myModal");

    // Get the image and insert it inside the modal - use its "alt" text as a caption
    var img = document.getElementById("myImg");
    var modalImg = document.getElementById("img01");
    var captionText = document.getElementById("caption");
    img.onclick = function(){
      modal.style.display = "block";
      modalImg.src = this.src;
      captionText.innerHTML = this.alt;
    }

    // Get the <span> element that closes the modal
    var span = document.getElementsByClassName("close")[0];

    // When the user clicks on <span> (x), close the modal
    span.onclick = function() { 
      modal.style.display = "none";
    }

body {
    font-family: Arial, Helvetica, sans-serif; 
    background: #000;
}

#container{
    width: 960px;
    min-width: 600px;
    min-height: 800px;
    margin-left: auto;
    margin-right: auto;
    border: 1px solid #adadad;
    background: #303030;
    z-index: 1;
}

.imgbucket{
    float: left;
    margin: 15px 0px 0px 15px;
    border: 2px dashed #13b7bd;
    height: 300px;
    border-radius: 5px;
}

.imgbucket:hover{
    transform: translateY(-10px);
    border: 2px dashed #00f6ff;
    box-shadow: 0px 0px 25px #11f6ff;
}

/*Tu z W3 Tu z W3 Tu z W3 Tu z W3 Tu z W3 Tu z W3 Tu z W3 Tu z W3*/

#myImg {
  border-radius: 5px;
  cursor: pointer;
  transition: 0.3s;
}

#myImg:hover {opacity: 0.7;}

/* The Modal (background) */
.modal {
  display: none; /* Hidden by default */
  position: fixed; /* Stay in place */
  z-index: 1; /* Sit on top */
  padding-top: 100px; /* Location of the box */
  left: 0;
  top: 0;
  width: 100%; /* Full width */
  height: 100%; /* Full height */
  overflow: auto; /* Enable scroll if needed */
  background-color: rgb(0,0,0); /* Fallback color */
  background-color: rgba(0,0,0,0.9); /* Black w/ opacity */
}

/* Modal Content (image) */
.modal-content {
  margin: auto;
  display: block;
  width: 80%;
  max-width: 700px;
}

/* Caption of Modal Image */
#caption {
  margin: auto;
  display: block;
  width: 80%;
  max-width: 700px;
  text-align: center;
  color: #ccc;
  padding: 10px 0;
  height: 150px;
}

/* Add Animation */
.modal-content, #caption {  
  -webkit-animation-name: zoom;
  -webkit-animation-duration: 0.6s;
  animation-name: zoom;
  animation-duration: 0.6s;
}

@-webkit-keyframes zoom {
  from {-webkit-transform:scale(0)} 
  to {-webkit-transform:scale(1)}
}

@keyframes zoom {
  from {transform:scale(0)} 
  to {transform:scale(1)}
}

/* The Close Button */
.close {
  position: absolute;
  top: 15px;
  right: 35px;
  color: #f1f1f1;
  font-size: 40px;
  font-weight: bold;
  transition: 0.3s;
}

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

/* 100% Image Width on Smaller Screens */
@media only screen and (max-width: 700px){
  .modal-content {
    width: 100%;
  }
}

<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="style.css">
    <meta charset="utf-8" />

</head>
<body>
    <div id="container">
    
            <div class="imgbucket">
                <img id="myImg" alt="nazwa" src="original.jpeg" style="width: 300px; height: 300px;">
            </div>
            
            <div class="imgbucket">
                <img id="myImg" alt="nazwa" src="original.jpeg" style="width: 300px; height: 300px;">
            </div>
            
            <div class="imgbucket">
                <img id="myImg" alt="nazwa" src="original.jpeg" style="width: 300px; height: 300px;">
            </div>
            
            
            <div class="imgbucket">
                <img id="myImg" alt="nazwa" src="original.jpeg" style="width: 300px; height: 300px;">
            </div>
            
            <div class="imgbucket">
                <img id="myImg" alt="nazwa" src="original.jpeg" style="width: 300px; height: 300px;">
            </div>
            
            <div class="imgbucket">
                <img id="myImg" alt="nazwa" src="original.jpeg" style="width: 300px; height: 300px;">
            </div>
    
                    <!-- The Modal -->
                    <div id="myModal" class="modal">
                      <span class="close">&times;</span>
                      <img class="modal-content" id="img01">
                      <div id="caption"></div>
                    </div>
    
</div>
    <script src="script.js"></script>
</body>
</html>

塞德里克·乔利

id必须是唯一的，在您的情况下，所有图像都应相同id。每个图像的第一拳头用属性替换id属性class。然后替换var img = document.getElementById("myImg");为var imgs = document.querySelectorAll(".myImg");并遍历每个图像。

// Get the modal
var modal = document.getElementById("myModal");

// Get the image and insert it inside the modal - use its "alt" text as a caption
var imgs = document.querySelectorAll(".myImg");
var modalImg = document.getElementById("img01");
var captionText = document.getElementById("caption");

imgs.forEach(img => {
  img.onclick = function() {
    modal.style.display = "block";
    modalImg.src = this.src;
    captionText.innerHTML = this.alt;
  }

});


// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];

// When the user clicks on <span> (x), close the modal
span.onclick = function() {
  modal.style.display = "none";
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background: #000;
}

#container {
  width: 960px;
  min-width: 600px;
  min-height: 800px;
  margin-left: auto;
  margin-right: auto;
  border: 1px solid #adadad;
  background: #303030;
  z-index: 1;
}

.imgbucket {
  float: left;
  margin: 15px 0px 0px 15px;
  border: 2px dashed #13b7bd;
  height: 300px;
  border-radius: 5px;
}

.imgbucket:hover {
  transform: translateY(-10px);
  border: 2px dashed #00f6ff;
  box-shadow: 0px 0px 25px #11f6ff;
}


/*Tu z W3 Tu z W3 Tu z W3 Tu z W3 Tu z W3 Tu z W3 Tu z W3 Tu z W3*/

#myImg {
  border-radius: 5px;
  cursor: pointer;
  transition: 0.3s;
}

#myImg:hover {
  opacity: 0.7;
}


/* The Modal (background) */

.modal {
  display: none;
  /* Hidden by default */
  position: fixed;
  /* Stay in place */
  z-index: 1;
  /* Sit on top */
  padding-top: 100px;
  /* Location of the box */
  left: 0;
  top: 0;
  width: 100%;
  /* Full width */
  height: 100%;
  /* Full height */
  overflow: auto;
  /* Enable scroll if needed */
  background-color: rgb(0, 0, 0);
  /* Fallback color */
  background-color: rgba(0, 0, 0, 0.9);
  /* Black w/ opacity */
}


/* Modal Content (image) */

.modal-content {
  margin: auto;
  display: block;
  width: 80%;
  max-width: 700px;
}


/* Caption of Modal Image */

#caption {
  margin: auto;
  display: block;
  width: 80%;
  max-width: 700px;
  text-align: center;
  color: #ccc;
  padding: 10px 0;
  height: 150px;
}


/* Add Animation */

.modal-content,
#caption {
  -webkit-animation-name: zoom;
  -webkit-animation-duration: 0.6s;
  animation-name: zoom;
  animation-duration: 0.6s;
}

@-webkit-keyframes zoom {
  from {
    -webkit-transform: scale(0)
  }
  to {
    -webkit-transform: scale(1)
  }
}

@keyframes zoom {
  from {
    transform: scale(0)
  }
  to {
    transform: scale(1)
  }
}


/* The Close Button */

.close {
  position: absolute;
  top: 15px;
  right: 35px;
  color: #f1f1f1;
  font-size: 40px;
  font-weight: bold;
  transition: 0.3s;
}

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


/* 100% Image Width on Smaller Screens */

@media only screen and (max-width: 700px) {
  .modal-content {
    width: 100%;
  }
}

<div id="container">

  <div class="imgbucket">
    <img class="myImg" alt="nazwa" src="https://picsum.photos/200" style="width: 300px; height: 300px;">
  </div>

  <div class="imgbucket">
    <img class="myImg" alt="nazwa" src="https://picsum.photos/200" style="width: 300px; height: 300px;">
  </div>

  <div class="imgbucket">
    <img class="myImg" alt="nazwa" src="https://picsum.photos/200" style="width: 300px; height: 300px;">
  </div>


  <div class="imgbucket">
    <img class="myImg" alt="nazwa" src="https://picsum.photos/200" style="width: 300px; height: 300px;">
  </div>

  <div class="imgbucket">
    <img class="myImg" alt="nazwa" src="https://picsum.photos/200" style="width: 300px; height: 300px;">
  </div>

  <div class="imgbucket">
    <img class="myImg" alt="nazwa" src="https://picsum.photos/200" style="width: 300px; height: 300px;">
  </div>

  <!-- The Modal -->
  <div id="myModal" class="modal">
    <span class="close">&times;</span>
    <img class="modal-content" id="img01">
    <div id="caption"></div>
  </div>

</div>

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编辑于 2021-01-26

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