我想使用选择器来选择页面上的每个图像以放入模式,而不必为每个图像重写整个脚本。我觉得这是一个愚蠢的问题,但我一直在尝试不同的尝试。现在,我正在使用var img = document.getElementById(“ article01”);选择一个图像,因为这就是使用getElementById所能做的全部。所以我想选择列出的两个图像,这样我就不会为每个图像重写整个脚本,因为页面上还会有更多图像。我尝试使用getelementbyclass和标记名,但我觉得很困难。
HTML:
<!-- Trigger the Modal -->
<img id="article01" src="/images/article1.PNG" alt="" style="width:100%;max-width:300px">
<img id="article01-2" src="/images/article1-2.PNG" alt="" style="width:100%;max-width:300px">
<!-- The Modal -->
<div id="modal1" class="modal">
<!-- The Close Button -->
<span class="close">×</span>
<!-- Modal Content (The Image) -->
<img class="modal-content" id="img01">
<!-- Modal Caption (Image Text) -->
<div id="caption"></div>
</div>
Javascript:
<script>
// Get the modal
var modal = document.getElementById("modal1");
*var img = document.getElementById("article01");*
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";
}
</script>
答案 0 :(得分:1)
您可以使用document.querySelectorAll()
获取所有图像的 nodeList 。例如,如果您这样创建图像列表:
<img class="selectable" src="article-1" />
<img class="selectable" src="article-2" />
<img class="selectable" src="article-2" />
您可以使用...向每个事件监听器添加事件监听器。
document.querySelectorAll('img.selectable')
.forEach((img) => {
img.addEventListener('click', (e) => showModal(e.target)); //or use img.onclick = ...
});
这里是指向CodePen的链接,显示了如何执行此操作的演示...
答案 1 :(得分:1)
这就是我从您的帖子中得到的。我认为您正在寻找的是document.querySelector()
<!-- Trigger the Modal -->
<img alt="this is a caption" src="https://livebrooks.com/wp-content/uploads/2017/07/fpo.gif" style="width:100%;max-width:300px">
<img alt="this is the second caption" src="https://livebrooks.com/wp-content/uploads/2017/07/fpo.gif" style="width:100%;max-width:300px">
<!-- The Modal -->
<div id="modalWrap" class="modal">
<!-- The Close Button -->
<span class="close" onclick="document.querySelector('#modalWrap').remove()">×</span>
</div>
for (var i of document.querySelectorAll("img")) {
makeModal(i.src, i.getAttribute("alt"));
}
function makeModal(src, caption) {
//modal wrap
var modalWrap = document.querySelector("#modalWrap");
//img
var imgElement = document.createElement("img");
imgElement.src = src;
imgElement.style.maxWidth = "300px";
//caption
var captionElement = document.createElement("p");
captionElement.innerText = caption;
//adding elements to modalWrap
modalWrap.appendChild(imgElement);
modalWrap.appendChild(captionElement);
}