<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <style> * { margin: 0; padding: 0; } .btn { 70px; box-shadow: 5px 5px 5px rgba(194, 187, 82, 0.712); } .active { background: pink; } .wrap-main>div { 200px; height: 200px; border: 1px solid #333; font-size: 30px; font-weight: 900px; text-align: center; line-height: 200px; display: none } .wrap-main>div>img { 250px; height: 250px; } </style> </head> <body> <div class="wrap"> <div class="wrap-head"> <button class="btn active">1</button> <button class="btn">2</button> <button class="btn">3</button> </div> <div class="wrap-main"> <div class="content" style="display: block;"><img src="./01.jpg" alt=""></div> <div class="content"><img src="./02.jpg" alt=""></div> <div class="content"><img src="./05.jpg" alt=""></div> </div> </div> <div class="wrap"> <div class="wrap-head"> <button class="btn active">1</button> <button class="btn">2</button> <button class="btn">3</button> </div> <div class="wrap-main"> <div class="content" style="display: block;"><img src="./01.jpg" alt=""></div> <div class="content"><img src="./02.jpg" alt=""></div> <div class="content"><img src="./05.jpg" alt=""></div> </div> </div> <div class="wrap"> <div class="wrap-head"> <button class="btn active">1</button> <button class="btn">2</button> <button class="btn">3</button> </div> <div class="wrap-main"> <div class="content" style="display: block;"><img src="./01.jpg" alt=""></div> <div class="content"><img src="./02.jpg" alt=""></div> <div class="content"><img src="./05.jpg" alt=""></div> </div> </div> <script> function tab(wrap) { var btns = wrap.querySelectorAll("button"); var divs = wrap.querySelectorAll(".content"); for (var i = 0; i < btns.length; i++) { btns[i].index = i;//自定义属性，作为下标 btns[i].onclick = function () { for (var i = 0; i < btns.length; i++) { btns[i].classList.remove("active"); divs[i].style.display = "none"; } this.classList.add("active"); divs[this.index].style.display = "block"; } } } var wraps = document.querySelectorAll(".wrap"); for (var i = 0; i < wraps.length; i++) { tab(wraps[i]); } </script> </body> </html>