【问题标题】:Multiple Event in single click javascript单击 javascript 中的多个事件
【发布时间】:2020-12-11 21:59:08
【问题描述】:

伙计们需要一些帮助,我试图弄清楚如何通过单击来执行多个事件每当我点击另一张图片时替换,我需要在单击时执行多个事件

const current = document.querySelector('#current');
const imgs = document.querySelectorAll('.imgs img');
const main = document.querySelector('#main-info h3');
const info = document.querySelector('.info');


imgs.forEach(img => img.addEventListener('click', imgClick));


function imgClick(e) {
current.src = e.target.src;

}
body {
  font-family: Arial, Helvetica, sans-serif;
  font: 15px/1.5;
  background-color: #f4f4f4;
  margin: 0;
  padding: 0;
}

.container {
  width: 90%;
  margin: auto;
  overflow: hidden;
}

header {
  display: flex;
  justify-content: space-between;
  padding-top: 5px;
  background-color: #567890;
  min-height: 130px;
  border-bottom: 3px #e0480c solid;
  padding: 0 20px 0 0;
}

header #branding {
  float: left;
  margin: 0;
}

header #branding img {
  margin: 0;
  padding: 0;
}

header ul {
  margin: 0;
  padding: 0;
}

header li {
  display: inline;
  float: left;
  padding: 0 20px 0 20px;
  margin-top: 50px;
}

header a {
  text-decoration: none;
  color: #ffffff;
  text-transform: uppercase;
  font-size: 16px;
}
header a:hover {
  color: #b9b8b9;
  opacity: 1;
}

header nav {
  float: right;
  padding-bottom: 50px;
}

.current a {
  color: #e0480c;
  font-weight: bold;
}

#showcase {
  min-height: 400px;
  background: linear-gradient(rgba(0, 0, 50, 0.5), rgba(0, 0, 50, 0.5)),
    url(/img/enseymada.jpg) no-repeat 0 -400px;
  text-align: center;
  background-size: cover;
  opacity: 0.9;
}

#showcase .main-info {
  margin-top: 100px;
  margin-bottom: 10px;
  justify-content: center;
  font-size: 50px;
  font-weight: 600;
  color: #fffcff;
}

#showcase p {
  font-size: 20px;
  font-weight: 200;
  color: #ccc;
}

.topinfo {
  text-align: center;
  justify-content: center;
}

.info2 {
  text-align: center;
  justify-content: center;
}

footer {
  width: 100%;
  bottom: 0;
  position: relative;
}

.foot {
  background: #e24305;
  color: #fff;
  height: 10px;
  margin: 0;
  width: 100%;
  text-align: center;
  padding: 7px 10px;
  justify-content: center;
  align-items: center;
}

.main-img img,
.imgs img {
  margin: auto;
  width: 100%;
  background: cover;
  border-radius: 10%;
}

.imgs {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-gap: 5px;
  background: cover;
  cursor: pointer;
}

.wrapper {
  border: #444 solid 3px;
  max-width: 800px;
  margin: auto;
  height: 100%;
  padding: 5px;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.newsletter {
  margin-bottom: 100px;
  padding: 0;
  width: 100%;
  height: 80px;
  align-items: center;
  justify-content: center;
  background-color: #567890;
}

.newsletter h1 {
  float: left;
  color: #ffffff;
}

.newsletter .btn {
  display: inline;
  margin: 20px 5px;
  padding: 10px;
  background-color: #444;
  color: #fff;
  border: none;
}

.newsletter #subscribe {
  padding: 10px;
  margin-left: 10px;
  border: none;
}
<div class="wrapper">
   <div class="main-img">
        <h3 id="main-info">Classic Enseymada</h3> 
        <img src="img/image2.jpg" id="current">  
    </div>

        <div class="imgs">
                <img src="img/image2.jpg">
            <div class="info">
                <img src="img/image3.jpg">
                <h3>Nuttela</h3>
            </div>
                <img src="img/image4.jpg">
                <img src="img/image6.jpg">
                <img src="img/image7.jpg">
                <img src="img/image8.jpg">
        </div>
</div>  
<footer><div class="foot">Copyright &copy Abby Cook's 2020</div></footer>
  <script src="./js/main.js"></script>
</body>
</html>

【问题讨论】:

  • 可以多次调用addEventListener,当事件发生时所有的监听器都会被执行。
  • 听起来你不需要设置多个事件,听起来你只需要对一个图像click事件执行几个动作。在这种情况下,只需在设置src 后添加要执行的附加语句即可。
  • 谢谢你们的解释,你们是对的,我需要做另一个动作,或者更确切地说是参数来执行更改文本。

标签: javascript html jquery css dom-events


【解决方案1】:

我假设您想将更多参数传递给您的 imgClick 函数。 一种方法是使用匿名函数,这样的事情应该可以解决问题:

    imgs.forEach(img => img.addEventListener('click', function(e){
        imgClick(e, 'param1', 'param2',);
    }));

    function imgClick(e, param1, param2,) {
    current.src = e.target.src;
    // your code
    }

然后在函数中添加您的代码。

【讨论】:

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