javascript - 使用模态将多个单击的图像替换为新图像

Question

自从我使用 JS 以来已经有一段时间了，我在创建这个多模态 img 时遇到了问题。

我正在遵循本指南。

模态脚本正在正常工作。如果我点击雪景图像，它会打开带有不同图像（火）的模态，但我真正需要的是能够点击不同的图像，确切地说是 10 个，并使用不同于我选择的第一个。

例如，如果我点击 image1 > image1.1 打开。如果我单击 image2 > image2.2 打开，依此类推。

关于如何解决这个问题的任何线索？

有人说我应该使用 ForEach 方法，并编辑函数 img.onclick = function(){...} 但我已经尝试过，不知道应该在哪里或如何做。

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(){
  let default_image = this.src;
  modal.style.display = "block";
  this.src = 'https://upload.wikimedia.org/wikipedia/commons/3/36/Large_bonfire.jpg';
  modalImg.src = this.src;
  this.src = default_image;
  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";
}

#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%;
  }
}

<img id="myImg" src="https://upload.wikimedia.org/wikipedia/commons/1/12/CargoNet_Di_12_Euro_4000_L%C3%B8nsdal_-_Bolna.jpg" alt="Snow" style="width:100%;max-width:300px">

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

标签： javascripthtmlmodal-dialog

Answer 1

您可以创建一个 dict 指定要加载的 img，具体取决于单击了哪个 img。

然后，您可以选择所有具有公共类的 imgs 并映射，然后创建打开的模态函数。

在每个函数中，您将 dict 值与您要加载的 src 一起传递。

在这个例子中，我使用了 title 属性来传递新的 src。我还给了你的img标签类myImg来映射。

modalImgs = {'catImg':'https://i.pinimg.com/originals/0c/1c/a1/0c1ca1955e2b0c5469ba17da2b1b9b96.jpg', 'dogImg': 'https://filmdaily.co/wp-content/uploads/2020/05/dog-videos-lede-1300x868.jpg'}

var modal = document.getElementById("myModal");

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

Object.keys(imgs).map(function(objectKey) {
  var img = imgs[objectKey];

  img.onclick = function() {
    modal.style.display = "block";
    modalImg.src = modalImgs[this.id]
    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";
}

.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%;
  }
}

<img class="myImg" id="catImg" src="https://i.pinimg.com/originals/4b/6f/ec/4b6fec352ad65acf6c1265201432dfa1.jpg" alt="Cat" style="width:100%;max-width:300px">
<img class="myImg" id="dogImg" src="https://ichef.bbci.co.uk/news/976/cpsprodpb/16B90/production/_107427039_gettyimages-636475496.jpg" alt="Dog" style="width:100%;max-width:300px">

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