将图像插入到模式弹出窗口中

Question

我正在使用模型弹出窗口制作一个图像库，JavaScript代码可以正常工作，但是仅使用画廊弹出模式框的第一张图像。 如何使用每种图像弹出模式？ 非常感谢任何帮助，谢谢。

<!-- The Modal -->
<div id="myModal" class="modal">
  <span class="close">&times;</span>
  <img class="modal-content" id="myImg1">
  <div id="caption"></div>
</div>

<?php echo '<img id="myImg" src="'.esc_url( $info['0'] ).'" alt="Snow" style="width:100%;max-width:300px">'; ?>





<script>
// 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("myImg1");

img.onclick = function(){
    modal.style.display = "block";
    modalImg.src = this.src;

}

// 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";
}
</script>

Answer 1

问题可能是您所有的图像都具有相同的id myImg 。 var img = document.getElementById('myImg'); 始终选择具有给定id的第一个元素。 您可以尝试将js放入函数中，并在onclick上调用它。

function imgPopup(){
var modal = document.getElementById('myModal');
var modalImg = document.getElementById("myImg1");
modal.style.display = "block";
modalImg.src = this.src;
}

<?php echo '<img id="myImg" src="'.esc_url( $info['0'] ).'" onclick="imgPopup();" alt="Snow" style="width:100%;max-width:300px">'; ?>

Answer 2

请尝试这个。 添加此行以获取定义的src

var myImg= document.getElementById("myImg");

替换您的JavaScript。

function imgPopup(){
    var modal = document.getElementById('myModal');
    var modalImg = document.getElementById("myImg1");
    var myImg= document.getElementById("myImg");

    modal.style.display = "block";
    modalImg.src = myImg.src;

    var span = document.getElementsByClassName("close")[0];
    span.onclick = function() { 
        modal.style.display = "none";
    } 
}

Answer 3

执行以下更新：将新图像包装在容器中。 将事件侦听器添加到容器中，匹配您想要的标签（img），然后更新模式中的src元素并显示它：

<!-- The Modal -->
<div id="myModal" class="modal">
  <span class="close">&times;</span>
  <img class="modal-content" id="myImg1">
  <div id="caption"></div>
</div>

<div id="gallery">
  <?php echo '<img src="'.esc_url( $info['0'] ).'" alt="Snow" style="width:100%;max-width:300px">'; ?>
</div>




<script>
// 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 gallery = document.getElementById('gallery'),
    modalImg = document.getElementById("myImg1");

gallery.addEventListener('click', function(e){
    if(e.target.nodeName.toLowerCase() === 'img'){
        modalImg.src = e.target.src;
        modal.style.display = "block";
    }
});

// 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";
}
</script>