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shillan发表于 2006-11-14 23:23 | 只看该作者

[JavaScript] 图片循环显示

javascript, 图片

1.把<body>中内容改为：
<body onload="rotateimage('rimage')">
2在head区域中加入如下代码

<script language="javascript">
<!-- begin
var interval = 2.5; // delay between rotating images (in seconds)
var random_display = 1; // 0 = no, 1 = yes
interval *= 1000;

var image_index = 0;
image_list = new array();
image_list[image_index++] = new imageitem("1.jpg");
image_list[image_index++] = new imageitem("2.jpg");
image_list[image_index++] = new imageitem("3.jpg");
image_list[image_index++] = new imageitem("4.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);
}
//  end -->
</script>

加入如下代码到body区域

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