基于javascript数组实现图片轮播

Z时代
2024-01-10
分类：综合

图片轮播的办法有多种，在这里介绍一种简单的：js数组实现。

首先将图片路径存储在数组中，然后再调用setInterval函数来依次轮播图片


 <script type="text/javascript"> 
 var curIndex = 0; 
 var timeInterval = 1000; 
 var arr = new Array(); 
 arr[0] = "1.png"; 
 arr[1] = "2.png"; 
 arr[2] = "3.png"; 
 arr[3] = "4.png"; 
 arr[4] = "5.png"; 
 setInterval(changeImg,timeInterval); 
 function changeImg() { 
  var obj = document.getElementById("imge"); 
  if (curIndex == arr.length-1) { 
   curIndex = 0; 
  } else { 
   curIndex += 1; 
  } 
  obj.src = arr[curIndex]; 
 } 
 </script>

完整实例如下


<!DOCTYPE html> 
<html lang="en"> 
<head> 
 <meta charset="UTF-8"> 
 <title>使用数组实现图片自动轮播</title> 
 <style type="text/css">
 #main{
  width: 700px;
  height: 450px;
  margin: 0 auto;
  text-align: center;
 }
 </style>
 <script type="text/javascript"> 
 var curIndex = 0; 
 var timeInterval = 1000; 
 var arr = new Array(); 
 arr[0] = "1.png"; 
 arr[1] = "2.png"; 
 arr[2] = "3.png"; 
 arr[3] = "4.png"; 
 arr[4] = "5.png"; 
 setInterval(changeImg,timeInterval); 
 function changeImg() { 
  var obj = document.getElementById("imge"); 
  if (curIndex == arr.length-1) { 
   curIndex = 0; 
  } else { 
   curIndex += 1; 
  } 
  obj.src = arr[curIndex]; 
 } 
 </script> 
</head> 
<body> 
 <div id="main">
  <h1>使用数组实现图片自动轮播</h1>
  <img id = "imge" src = "1.png" alt="picture" /> 
 </div>
</body> 
</html>