代码
<!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; } #box { width: 1125px; height: 352px; margin: 50px auto; } #box img { width: 100%; height: 100%; } </style> </head> <body> <div id="box"> <img src="images/img1.jpg" alt=""> </div> <script> var box = document.getElementById('box'); var img = document.getElementsByTagName('img')[0]; var arr = ['images/img1.jpg', 'images/img2.jpg', 'images/img3.jpg', 'images/img4.jpg']; var num = 0; var timer = null; // 开启自动切换定时器 timer = setInterval(auto, 1000); function auto() { num++; if (num > arr.length - 1) { num = 0; } img.src = arr[num] } // 盒子划过事件 box.onmouseover = function () { clearInterval(timer); } // 盒子划出事件 再度开启 同一个 定时器 box.onmouseout = function () { timer = setInterval(auto, 2000); } </script> </body> </html>
效果
