<html>
<head>
<script language="javascript">
var interval = 2; //delay between roating images(in seconds)
var random_display = 1;
interval *= 500;
var image_index = 0;
image_list = new Array();
image_list[image_index++] = new imageItem("IMG_5370.JPG");
image_list[image_index++] = new imageItem("IMG_5371.JPG");
image_list[image_index++] = new imageItem("IMG_5372.JPG");
image_list[image_index++] = new imageItem("IMG_5374.JPG");
var number_of_image = image_list.length;
function imageItem(image_location)
{
this.image_item = new Image();
this.image_item.src = image_location;
}
function get_ImageItemLocation(imageObj)
{
return(imageObj.image_item.src)
}
function generate(x,y)
{
var range = y - x + 1;
return Math.floor(Math.random()*range) + x;
}
function getNextImage()
{
if(random_display)
{
image_index = generate(0,number_of_image-1);
}
else
{
image_index = (image_index + 1) % number_of_image;
}
var new_image = get_ImageItemLocation(image_list[image_index]);
return(new_image);
}
function rotateImage(place)
{
var new_image = getNextImage();
document[place].src = new_image;
var recur_call = "rotateImage('"+place+"')";
setTimeout(recur_call,interval);
}
</script>
</head>
</html>
本文介绍了一种使用JavaScript实现图片轮播的方法。该方法通过设置延迟时间来控制图片的切换速度,并提供了随机显示图片的功能。代码中定义了图片项对象,并通过函数控制图片的加载与显示,实现了自动轮播的效果。
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