当我点击图片时，此图片会以弹出窗口的形式打开，但我想向我展示另一张不同图片的图片

Posted 2021-04-15

// 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;
    }

像这样 ：

答案

将数据属性添加到图像标记

<img id="myImg" data-src="bigimage.png" src="smallimage.png" alt="This is the caption" />

并像这样更改代码：

// 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;
  modalImg.src = this.getAttribute("data-src");
  captionText.innerHTML = this.alt;
}