使用 PHP 和 JavaScript 创建模态图像

Question

我创建了一个将图像放在 table 中的页面，我希望能够单击每个缩略图以在当前缩略图的顶部打开一个对话框 box/popup window显示更大图像的页面。我查看了 w3schools.com (https://www.w3schools.com/howto/howto_css_modal_images.asp) 并且可以轻松地为单个图像复制它，但不能为多个图像复制它。可能吗？任何指针将不胜感激。

这是我的 PHP 代码，它生成包含我的图像的 table：

<div class="Row">
<?php
$counter = 0;
while ( $row = mysqli_fetch_array( $rs4 ) ) {
  ?>
<div class="Cell">
  <p> <img src ="<?php echo $row ['image']; ?>"></a> 
</div>
<?php++$counter;
if ( is_int( $counter / 3 ) ) {
  echo '</div><div class="Row">';
}
?>
<?php
}
?>

Answer 1

当然可以。将相关代码放入一个函数中即可（我将其命名为trigger(var1)，其中var1是图像id）。

只需将您的 PHP 脚本放入生成图像部分的代码中。（在下面HTML的TABLE中），如果您愿意，可以将TABLE更改为DIV

请看下面代码（请点击"Run code snippet"试一下效果）：

// 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;
}

*/

function trigger(var1)
{
 modal.style.display = "block";
  modalImg.src = document.getElementById(var1).src;
  captionText.innerHTML = document.getElementById(var1).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;}

.xIMG {
  border-radius: 5px;
  cursor: pointer;
  transition: 0.3s;
}

.xIMG: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%;
  }
}

<body>

<!-- Put your PHP scripts to generate the table BELOW with images -->

<table border=0><tr><td>
<img id="myImg" class=xIMG src="https://i.stack.imgur.com/Kza2t.jpg" alt="Picture 1" style="width:100%;max-width:300px" onclick="javascript:trigger('myImg');">
<td>
<img id="myImg2" class=xIMG src="https://i.stack.imgur.com/Gzfgu.jpg" alt="Picture 2" style="width:100%;max-width:300px" onclick="javascript:trigger('myImg2');">
<td>
<img id="myImg3" class=xIMG src="https://i.stack.imgur.com/UL95G.jpg" alt="Picture 3" style="width:100%;max-width:300px" onclick="javascript:trigger('myImg3');">
</table>

<!-- END your PHP here --->


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

使用 PHP 和 JavaScript 创建模态图像

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