当我点击另一个图像时如何更改图像？ （没有点击）

Question

我在做一个登陆页面，想在我点击其他图片时改变主图片。 我试过这个

<div class="thumb">
  <ul>
    <li> 
      <img id="img1" class="smallImg coupe" src="./assets/smallCar1.png" alt="small img">
    </li>
  </ul>
  <ul>
    <li>
      <img id="img2" class="smallImg" src="./assets/smallCar2.png" alt="small img">
    </li>
  </ul>
  <ul>
    <li>
      <img id="img3" class="smallImg" src="./assets/smallCar3.png" alt="small img">
    </li>
  </ul>
</div>

function imageChange() {
  let picDefault = document.getElementById("img");

  if ((picDefault = "img")) {
    picDefault.src = "./assets/img1.png";
  }
}
picDefault.addEventListener(click, imageChange);

Answer 1

通过单击另一个图像来更新图像的示例代码。 用例可能完全不同。

 const thumps = document.getElementsByClassName("thump"); // secondary images const main = document.getElementById("main"); for(let i = 0; i < thumps.length; i ++) { const el = thumps[i] el.addEventListener("click", function(e) { // add click handler const elem = e.target; main.src = elem.src; }) }

 #main { max-width: 300px; }.thump { width: 100px; margin: 4px; padding: 2px; border: 1px solid #ccc; display: inline-block; }

 <div> <h5>Main Image</h5> <img src="https://images.unsplash.com/photo-1644243019151-0bb97ce1af84" id="main"/> </div> <h5>Click Images below thumpnails to update main image</h5> <div class="row"> <img src="https://images.unsplash.com/photo-1644235279538-4cc7cbdca6a8" class="thump"> <img src="https://images.unsplash.com/photo-1643443026948-c17b9bb16758" class="thump"> <img src="https://images.unsplash.com/photo-1644243019151-0bb97ce1af84" class="thump"> </div>