使用循环给每个a标签添加事件,单击选项卡的时候切换图片
实例
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>使用事件给a标签添加的单击事件(结合循环遍历给a标签添加事件,达到点击就切换的效果)2019.05.08</title> <style> .box { width: 500px; height: 700px; background-color: #efefef; border: 1px solid lightgray; margin: 20px auto; text-align: center; color: #636363; box-shadow: 2px 2px 2px #999; } .box ul { margin:0; padding:0; /*将ul转为BFC独立块,使之不受内部浮动元素的影响*/ overflow: hidden; } .box ul li { list-style-type: none; float:left; background-color: skyblue; margin-left: 20px; } .active { font-size:1.2em; background-color: coral; } .box ul li a { /*将a转为块元素,并设置为li的宽高,这样可以使整个li可以被点击*/ display: block; width: 100px; height: 40px; line-height: 40px; color: white; text-decoration: none; } .box ul li:hover { font-size:1.2em; background-color: coral; } .box .pic { width: 450px; height:450px; border: 1px solid lightgray; margin: 50px auto 0; } .box .pic img { width: 100%; height: 100%; } </style> </head> <body> <div class="box"> <h2>明星相册</h2> <ul> <li> <a href="https://img.alicdn.com/simba/img/TB1T8F2TMHqK1RjSZFESuwGMXXa.jpg" title="《楚乔传》,《花千骨》,《陆贞传奇》...">赵丽颖</a> </li> <li> <a href="https://img.alicdn.com/simba/img/TB1mxi7IgHqK1RjSZFPSuwwapXa.jpg" title="《倚天屠龙记》,《咱们经婚吧》,《爱无悔》...">高圆圆</a> </li> <li> <a href="https://img.alicdn.com/simba/img/TB1Kp09WXzqK1RjSZFvSuwB7VXa.jpg" title="《那年花开月正圆》,《甑环传》,《玉观音》...">孙俪</a> </li> <li> <a href="https://img.alicdn.com/simba/img/TB1cH06gnZmx1VjSZFGSuux2XXa.jpg" title="《还珠格格》,《武媚娘传奇》,《我不是潘金莲》...">范冰冰</a> </li> </ul> <div class="pic"> <img src="images/zwt.png" alt="" id="img"> </div> <p id="info"></p> </div> <script> //1.获取页面元素 var pic = document.getElementsByTagName('a'); var img = document.getElementById('img'); var p = document.getElementById('info'); //2.循环遍历a给每个a添加事件 for(var i = 0;i < pic.length;i += 1){ pic[i].onclick = function(){ //锁定选项卡效果 for(var i = 0;i < pic.length;i += 1){ pic[i].classList.remove('active'); } this.classList.add('active'); //3.获取基本信息 var picUrl = this.href; var picName = this.title; var picInfo = this.innerHTML; img.src = picUrl; p.innerHTML = '<span style="color:coral;">' + picInfo + picName + '</span>'; return false; }; } </script> </body> </html>
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