Implementing image carousel based on javascript array_javascript skills-JS Tutorial-php.cn

Implementing image carousel based on javascript array_javascript skills

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Release： 2016-05-16 15:02:38

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There are many ways to carousel images. Here is a simple one: js array implementation.

First store the image path in the array, and then call the setInterval function to rotate the images in sequence

 <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>

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The complete example is as follows

<!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>

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The above is the entire content of this article, I hope it will be helpful to everyone’s study.